Commit Graph

1303 Commits

Author SHA1 Message Date
Alexey Starikovskiy
08bef9d337 x86: don't use MP_processor_info for ACPI mode
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:31 +02:00
Alexey Starikovskiy
c853c67690 x86: separate generic_processor_info into its own function
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:31 +02:00
Alexey Starikovskiy
987dd2d4d4 x86: don't call MP_processor_info for disabled cpu
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:31 +02:00
Alexey Starikovskiy
2df2972619 x86: move es7000_plat closer to its user
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:31 +02:00
Dave Jones
0e03eb86b5 x86: Centaur Isaiah processor to use sysenter in 64-bit compatibility mode rather than syscall
Upcoming 64 bit processors from Centaur can use sysenter.

Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Jesse Ahrens <jahrens@centtech.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:31 +02:00
Glauber Costa
dd46e3ca73 x86: move apic declarations to mach_apic.h
take them out of the x86_64-specific asm/mach_apic.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:30 +02:00
Cyrill Gorcunov
ab68ed98f6 x86: entry_32.S - use flags from processor-flags.h
By including processor-flags.h we are allowed to use predefined
macroses instead of keeping own ones

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:30 +02:00
Glauber Costa
5af5573ee0 x86: move ipi definitions to mach_ipi.h
take them out of the x86_64-only asm/mach_apic.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:30 +02:00
Andi Kleen
8346ea17aa x86: split large page mapping for AMD TSEG
On AMD SMM protected memory is part of the address map, but handled
internally like an MTRR. That leads to large pages getting split
internally which has some performance implications. Check for the
AMD TSEG MSR and split the large page mapping on that area
explicitely if it is part of the direct mapping.

There is also SMM ASEG, but it is in the first 1MB and already covered by
the earlier split first page patch.

Idea for this came from an earlier patch by Andreas Herrmann

On a RevF dual Socket Opteron system kernbench shows a clear
improvement from this:
(together with the earlier patches in this series, especially the
split first 2MB patch)

[lower is better]
              no split stddev         split  stddev    delta
Elapsed Time   87.146 (0.727516)     84.296 (1.09098)  -3.2%
User Time     274.537 (4.05226)     273.692 (3.34344)  -0.3%
System Time    34.907 (0.42492)      34.508 (0.26832)  -1.1%
Percent CPU   322.5   (38.3007)     326.5   (44.5128)  +1.2%

=> About 3.2% improvement in elapsed time for kernbench.

With GB pages on AMD Fam1h the impact of splitting is much higher of course,
since it would split two full GB pages (together with the first
1MB split patch) instead of two 2MB pages.  I could not benchmark
a clear difference in kernbench on gbpages, so I kept it disabled
for that case

That was only limited benchmarking of course, so if someone
was interested in running more tests for the gbpages case
that could be revisited (contributions welcome)

I didn't bother implementing this for 32bit because it is very
unlikely the 32bit lowmem mapping overlaps into the TSEG near 4GB
and the 2MB low split is already handled for both.

[ mingo@elte.hu: do it on gbpages kernels too, there's no clear reason
                 why it shouldnt help there. ]

Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: andreas.herrmann3@amd.com
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:30 +02:00
Andi Kleen
f5c24a7fd0 x86: don't use large pages to map the first 2/4MB of memory
Intel recommends to not use large pages for the first 1MB
of the physical memory because there are fixed size MTRRs there
which cause splitups in the TLBs.

On AMD doing so is also a good idea.

The implementation is a little different between 32bit and 64bit.
On 32bit I just taught the initial page table set up about this
because it was very simple to do. This also has the advantage
that the risk of a prefetch ever seeing the page even
if it only exists for a short time is minimized.

On 64bit that is not quite possible, so use set_memory_4k() a little
later (in check_bugs) instead.

Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: andreas.herrmann3@amd.com
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:30 +02:00
Andi Kleen
cc61503219 x86: account overlapped mappings in max_pfn_mapped
When end_pfn is not aligned to 2MB (or 1GB) then the kernel might
map more memory than end_pfn. Account this in max_pfn_mapped.

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: andreas.herrmann3@amd.com
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:30 +02:00
Thomas Gleixner
67794292c8 x86: replace the now useless max_pfn_mapped define
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:30 +02:00
Andi Kleen
41bd4eac74 x86: move early exception handlers into init.text
Currently they are in .text.head because the rest of head_64.S.
.text.head is not removed as init data, but the early exception handlers
should be because they are not needed after early boot of the BP.
So move them over.

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
Andi Kleen
749c970ae9 x86: replace early exception setup macro recursion with loop
The early exception handlers are currently set up using a macro
recursion. There is only one user left. Replace the macro with a
standard loop in place.

Noop patch, just a cleanup.

[ tglx@linutronix.de: simplified ]

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
Andi Kleen
5524ea320d x86: don't set up early exception handlers for external interrupts
All of early setup runs with interrupts disabled, so there is no
need to set up early exception handlers for vectors >= 32

This saves some minor text size.

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
gorcunov@gmail.com
366932deb3 x86: relocate_kernel - use predefined macroses for page attributes
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
gorcunov@gmail.com
fd3af53122 x86: relocate_kernel - use predefined macroses for processor state
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
gorcunov@gmail.com
a7bba17bf0 x86: relocate_kernel - use PAGE_SIZE instead of numeric constant
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
gorcunov@gmail.com
4039ae5380 x86: relocate_kernel_32.S - clear register in more elegant way
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
Mathieu Desnoyers
15a601eb9c x86: fix test_poke for vmalloced pages
* Ingo Molnar (mingo@elte.hu) wrote:
>
> * Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:
>
> > The shadow vmap for DEBUG_RODATA kernel text modification uses
> > virt_to_page to get the pages from the pointer address.
> >
> > However, I think vmalloc_to_page would be required in case the page is
> > used for modules.
> >
> > Since only the core kernel text is marked read-only, use
> > kernel_text_address() to make sure we only shadow map the core kernel
> > text, not modules.
>
> actually, i think we should mark module text readonly too.
>

Yes, but in the meantime, the x86 tree would need this patch to make
kprobes work correctly on modules.

I suspect that without this fix, with the enhanced hotplug and kprobes
patch, kprobes will use text_poke to insert breakpoints in modules
(vmalloced pages used), which will map the wrong pages and corrupt
random kernel locations instead of updating the correct page.

Work that would write protect the module pages should clearly be done,
but it can come in a later time. We have to make sure we interact
correctly with the page allocation debugging, as an example.

Here is the patch against x86.git 2.6.25-rc5 :

The shadow vmap for DEBUG_RODATA kernel text modification uses virt_to_page to
get the pages from the pointer address.

However, I think vmalloc_to_page would be required in case the page is used for
modules.

Since only the core kernel text is marked read-only, use kernel_text_address()
to make sure we only shadow map the core kernel text, not modules.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: akpm@linux-foundation.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
Ravikiran G Thirumalai
e5699a8231 x86: clean up vSMP detection
vSMP detection: access pci config space early in boot to detect if the
system is a vSMPowered box, and cache the result in a flag, so that
is_vsmp_box() retrieves the value of the flag always.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
Jeremy Fitzhardinge
d93c870bad x86: only enable interrupts when kernel state has been set up
The sysenter path tries to enable interrupts immediately.  Unfortunately
this doesn't work in a paravirt environment, because not enough kernel
state has been set up at that point (namely, pointing %fs to the kernel
percpu data segment).  To fix this, defer ENABLE_INTERRUPTS until after
the kernel state has been set up.

Unfortunately this means that we're running with interrupts disabled
for a while without calling the IRQ tracing code, but that can't be
called without setting up %fs either.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:29 +02:00
Yinghai Lu
c64df70793 x86: memtest bootparam
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:21 +02:00
Cyrill Gorcunov
288621e32a x86: relocate_kernel - use predefined PAGE_SIZE instead of own alias
This patch does clean up relocate_kernel_(32|64).S a bit by getting rid
of local PAGE_ALIGNED macro. We should use well-known PAGE_SIZE instead

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:21 +02:00
Alexey Starikovskiy
89bda4fccb x86: use same index for processor maps
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:21 +02:00
Ingo Molnar
6e908947b4 x86: fix ioapic bug again
un-revert:

 commit 4960c9df14
 Author: Thomas Gleixner <tglx@linutronix.de>
 Date:   Tue Jan 22 10:23:01 2008 +0100

     Revert "x86: fix NMI watchdog & 'stopped time' problem"

         This reverts commit d4d25deca4.

needs a proper fix though ...

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:21 +02:00
Yinghai Lu
9307cacad0 x86: pat cpu feature bit setting for known cpus
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:20 +02:00
Ingo Molnar
a7c7d0e91d x86: tom2 warning fix
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:20 +02:00
Yinghai Lu
35605a1027 x86: enable PAT for amd k8 and fam10h
make known_pat_cpu to think amd k8 and fam10h is ok too.

also make tom2 below to be WRBACK

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:20 +02:00
venkatesh.pallipadi@intel.com
2e5d9c857d x86: PAT infrastructure patch
Sets up pat_init() infrastructure.

PAT MSR has following setting.
	PAT
	|PCD
	||PWT
	|||
	000 WB		_PAGE_CACHE_WB
	001 WC		_PAGE_CACHE_WC
	010 UC-		_PAGE_CACHE_UC_MINUS
	011 UC		_PAGE_CACHE_UC

We are effectively changing WT from boot time setting to WC.
UC_MINUS is used to provide backward compatibility to existing /dev/mem
users(X).

reserve_memtype and free_memtype are new interfaces for maintaining alias-free
mapping. It is currently implemented in a simple way with a linked list and
not optimized. reserve and free tracks the effective memory type, as a result
of PAT and MTRR setting rather than what is actually requested in PAT.

pat_init piggy backs on mtrr_init as the rules for setting both pat and mtrr
are same.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:19 +02:00
Pavel Machek
7de6a4cdac x86: clean up aperture_64.c
Initializing to zero is generally bad idea, I hope it is right for
__init data, too.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:19 +02:00
Yinghai Lu
01561264bd x86: allocate e820 resource struct all together
don't need to allocate that one by one

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:19 +02:00
Yinghai Lu
272b9cad6e x86: early memtest to find bad ram
do simple memtest after init_memory_mapping

use find_e820_area_size to find all ram range that is not reserved.

and do some simple bits test to find some bad ram.

if find some bad ram, use reserve_early to exclude that range.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:19 +02:00
Robert P. J. Day
0054f4b708 x86: Explicitly include required header files.
After an experimental cleanup of <linux/percpu.h>, these files were
exposed as invoking kmalloc() without including <linux/slab.h>.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:15 +02:00
Yakov Lerner
acb5b8a2dd x86, kprobes: correct post-eip value in post_hander()
I was trying to get the address of instruction to be executed
next after the kprobed instruction.  But regs->eip in post_handler()
contains value which is useless to the user. It's pre-corrected value.
This value is difficult to use without access to resume_execution(), which
is not exported anyway.
I moved the invocation of post_handler() to *after* resume_execution().
Now regs->eip contains meaningful value in post_handler().

I do not think this change breaks any backward-compatibility.
To make meaning of the old value, post_handler() would need access to
resume_execution() which is not exported.  I have difficulty to believe
that previous, uncorrected, regs->eip can be meaningfully used in
post_handler().

Signed-off-by: Yakov Lerner <iler.ml@gmail.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:13 +02:00
Roland McGrath
0f54091051 x86: handle_vm86_trap cleanup
Use force_sig in handle_vm86_trap like other machine traps do.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:13 +02:00
Roland McGrath
a31f8dd7ee x86: ptrace vs -ENOSYS
When we're stopped at syscall entry tracing, ptrace can change the %rax
value from -ENOSYS to something else.  If no system call is actually made
because the syscall number (now in orig_rax) is bad, then we now always
reset %rax to -ENOSYS again.

This changes it to leave the return value alone after entry tracing.
That way, the %rax value set by ptrace is there to be seen in user mode
(or in syscall exit tracing).  This is consistent with what the 32-bit
kernel does.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:13 +02:00
Adrian Bunk
ede1389f8a x86: remove the write-only timer_uses_ioapic_pin_0
This patch removes the write-only timer_uses_ioapic_pin_0
(gsi can't be <= 15 in the line of it's fake usage in mpparse_32.c).

Spotted by the GNU C compiler.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:13 +02:00
Ingo Molnar
6542fe80e6 x86: vsmp fix x86 vsmp fix is vsmp box cleanup
code got a bit smaller:

arch/x86/kernel/vsmp_64.o:

   text	   data	    bss	    dec	    hex	filename
    205	      4	      0	    209	     d1	vsmp_64.o.before
    181	      4	      0	    185	     b9	vsmp_64.o.after

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:08 +02:00
Ravikiran G Thirumalai
1cb68487f5 x86: apic_is_clustered_box to indicate unsynched TSC's on multiboard vSMP systems
Indicate TSCs are unreliable as time sources if the platform is
a multi chassi ScaleMP vSMPowered machine.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:08 +02:00
Ravikiran G Thirumalai
9f6d8552a9 x86: vSMP: use pvops only if platform has the capability to support it
Re-arrange set_vsmp_pv_ops so that pv_ops are set only if
the platform has capability to support paravirtualized irq ops

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:08 +02:00
Ravikiran G Thirumalai
aa7d8e25ec x86: fix build breakage when PCI is define and PARAVIRT is not
- Fix the the build breakage when PARAVIRT is defined
  but PCI is not
  This fixes problem reported at:
	http://marc.info/?l=linux-kernel&m=120525966600698&w=2
- Make is_vsmp_box() available even when PARAVIRT is not defined.
  This is needed to determine if tsc's are reliable as a time source
  even when PARAVIRT is not defined.
- split vsmp_init to use is_vsmp_box() and set_vsmp_pv_ops()
  set_vsmp_pv_ops will do nothing if PCI is not enabled in the config.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:08 +02:00
Ravikiran G Thirumalai
3250c91ada x86: vSMP: Fix is_vsmp_box()
is_vsmp_box() currently does not work on vSMPowered systems,  as pci cfg
space is not read correctly -- This patch fixes it.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:08 +02:00
Alexey Starikovskiy
864205062f x86: make struct mpc_config_translation NUMAQ-only
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:08 +02:00
Alexey Starikovskiy
0ec153af4d x86: remove mpc_oem_bus_info()
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:08 +02:00
Alexey Starikovskiy
d285e33889 x86: remove mpc_oem_pci_bus()
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:08 +02:00
Alexey Starikovskiy
4655c7deca x86: remove mpc_apic_id()
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:07 +02:00
Alexey Starikovskiy
555b07646d x86: rename gsi_start to gsi_base to match mpparse_32.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:05 +02:00
Alexey Starikovskiy
85e46035be x86: limit scan to 1k of EBDA.
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:05 +02:00
Alexey Starikovskiy
ce3fe6b2bf x86: use get_bios_ebda in mpparse_64.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:05 +02:00
Alexey Starikovskiy
e3e3ffa203 x86: add uniq_ioapic_id to mpparse_32.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Alexey Starikovskiy
857033a696 x86: add bad_ioapic to mpparse_32.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Alexey Starikovskiy
d2953315c7 x86: lindent mpparse_64.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
4cedb3343f x86: remove smpboot_32.c and smpboot_64.c
Remove the last leftovers from the files. Move the ones
that are still used to the files they belong, the others
that grep can't reach, simply throw away.

Merge comments ontop of file and that's it: smpboot integrated

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
acbb673418 x86: move apicid mappings to smpboot.c
They are i386 specific (the x86_64 definitions live
elsewhere, and should remain there), so are enclosed around
an ifdef

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
2cd9fb71ee x86: merge cpu_exit_clear
this is the last remaining function in smpboot_32.c
Since it is i386 specific, move it around an ifdef to
smpboot.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
8aef135c73 x86: merge native_smp_prepare_cpus
With the previous changes, code for native_smp_prepare_cpus()
in i386 and x86_64 now look very similar. merge them into
smpboot.c. Minor differences are inside ifdef

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
9f3734f631 x86: introduce smpboot_clear_io_apic
x86_64 has two nr_ioapics = 0 statements. In 32-bit, it can be done
too. We do it through the smpboot_clear_io_apic() inline function,
to cope with subarchitectures (visws) that does not compile mpparse in

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
771263d311 x86: change x86_64 sanity checks to match i386.
They are mostly inocuous. APIC_INTEGRATED will expand to 1,
check_phys_apicid_present is checking for the same thing it was before,
etc. But the code is identical to i386 now, and will allow us to
integrate it.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
0df1ba8cab x86: add extra sanity check
This test exists in x86_64 and also applies to i386. So we add it

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
1db17f5534 x86: change x86_64 native_smp_prepare_cpus to match i386
An APIC test is moved, and code is replaced by the mach-default
already defined function (smpboot_setup_io_apic).
setup_portio_remap() is added, but it is a nop in mach-default.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
7cefaa20e7 x86: additions to i386 native_smp_prepare_cpus.
Add function calls to native_smp_prepare_cpus in i386
to match x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
e7bc8fbad4 x86: get rid of smp_boot_cpus
This patch get rid of smp_boot_cpus(), since it does not
boot any cpu anymore. Its code is split in a way to make
it closer to x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
bd7b47ba5e x86: use physical id when disabling smp
if smp configuration is not found at all, hook into 0.
This is done to match x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
83f7eb9c67 x86: merge native_smp_cpus_done
They look similar enough, and are merged. Only difference
(zap_low_mapping for i386) is inside ifdef

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:04 +02:00
Glauber de Oliveira Costa
a8db8453ff x86: merge smp_prepare_boot_cpu
it is practically the same between arches now, so it is
moved to smpboot.c. Minor differences (gdt initialization)
live inside an ifdef

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:03 +02:00
Glauber de Oliveira Costa
bbc2ff6a91 x86: integrate start_secondary
It now looks the same between architectures, so we
merge it in smpboot.c. Minor differences goes inside
an ifdef

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:03 +02:00
Glauber de Oliveira Costa
cb3c8b9003 x86: integrate do_boot_cpu
This is a very large patch, because it depends on a lot
of auxiliary static functions. But they all have been modified
to the point that they're sufficiently close now. So they're just
merged in smpboot.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:03 +02:00
Glauber de Oliveira Costa
c70dcb7430 x86: change boot_cpu_id to boot_cpu_physical_apicid
This is to match i386. The former name was cuter,
but the current is more meaningful and more general,
since cpu_id can be a logical id.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
9d97d0da71 x86: move stack_start to smp.h
voyager would conflict with it, but the types are ultimately
compatible. So remove the extern definition from voyager_smp.c
in favour of the common one

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
7cc3959ecd x86: move {un}map_cpu_to_logical_apicid to smpboot.c
Move map_cpu_to_logical_apicid() and unmap_cpu_to_logical_apicid()
to smpboot.c. They take together all the bunch of static functions
they rely upon

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
b9f9294a86 x86: add callin tests to cpu_up
Now that we boot cpus here, callin_map has this meaning (same
as x86_64)

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
0717826927 x86: change wakeup_secondary name
wakeup_secondary_via_INIT => wakeup_secondary_cpu.

This is to match i386, where init is not always used.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
f6bc402909 x86: include mach_apic.h in smpboot_64.c and smpboot.c
After the inclusion, a lot of files needs fixing for conflicts,
some of them in the headers themselves, to accomodate for both
i386 and x86_64 versions.

[ mingo@elte.hu: build fix ]

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
4370ee4d3b x86: call do_boot_cpu directly from native_cpu_up
We don't need __smp_prepare_cpu anymore.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
6becedbb06 x86: minor adjustments for do_boot_cpu
This patch provides minor adjustments for do_boot_cpus
in both architectures to allow for integration

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
e481fcf856 x86: calibrate delay with irqs enabled
We do it to make it close to x86_64. The later needs it,
otherwise the nmi watchdog can get into the scene and kill us
with a hammer.

Enabling irqs here used to trigger a bug in i386. This is because
time irq handling relies upon structures that are only initialized
after smp initcalls (More precisely, it will find
per_cpu(hrtimer_bases, cpu)->cb_pending list not initialized and crash)

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
ac60aae561 x86: provide an end_local_APIC_setup function
It splits setup_local_APIC in two, providing a function corresponding
to the ending part of it. As a side effect, smp_callin looks the same
between i386 and x86_64.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
df7939ae8b x86: wrap esr setting up in i386 in lapic_setup_esr
it is a little bit more complicated than x86_64 due to erratas and
other stuff, but its existance will ease integration

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
ea0cadbfed x86: modify smp_callin in x86_64 to look like i386
We introduce empty macros just to make them look like the same

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
4c07ad6950 x86: don't span a new worker in __smp_prepare_cpu
We can do it now that do_boot_cpu has its own worker.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
365c894c65 x86: use create_idle struct in do_boot_cpu
Use a new worker, with help of the create_idle struct
to fork the idle thread. We now have two workers, the first
of them triggered by __smp_prepare_cpu. But the later is
going away soon.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
ddd10ecfa2 x86: get rid of commenced mask.
As we now boot cpus from cpu_up, we don't need it.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
9713277607 x86: boot cpus from cpu_up, instead of prepare_cpus
After all the infrastructure work, we're now prepared
to boot the cpus from cpu_up, and not from prepare_cpus.
So the difference between cold boot and hotplug is effectively
over, and the functions are used to the purposes they're meant to.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
d2bcbad5f3 x86: do not zap_low_mappings in __smp_prepare_cpus
It was okay when cpus were cold booted before this point.
But with the new state machine, they will not have arrived to
the trampoline yet. zapping low mappings will have the bad effect
of breaking it completely after paging enablement

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
802b8133b4 x86: schedule work only if keventd is already running
Only call schedule_work if keventd is already running.
This is already the way x86_64 does

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:02 +02:00
Glauber de Oliveira Costa
e7f8b14e02 x86: don't initialize sibling and core maps during preparation
it is redundant, since it is already done by set_cpu_sibling_map()

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
50e440aa53 x86: call nmi_watchdog_default in i386
this does not exist, so it will be an empty macro

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
4626df1801 x86: call check_nmi_watchdog explicitly in native_smp_cpus_done
With this, remove its late_initcall marker from nmi_32.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
6d60cd5359 x86: unify nmi_32.h and nmi_64.h
Two more files goes away. nmi_64.h and nmi_32.h gives birth
to nmi.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
e32ede19ac x86: wipe get_nmi_reason out of nmi_64.h
use mach_traps when it is supposed to be used.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
3cf19f31d9 x86: don't set maps in native_smp_prepare_boot_cpu()
By this time, they are already set in init routines

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
17c9ab1eab x86: move smp_intr_init away from smpboot_32.c
We move it to apic_32.c, since it's irq related anyway,
and only called from that file.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
eb44d0a2a9 x86: include smpboot_hooks.h in smpboot_64.c
We do it and also fix conflicts, which makes x86_64 automatically
closer to i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
8d77010f8c x86: include mach_wakecpu.h in smpboot_64
Do it and also fix conflicts, which automatically makes
x86_64 look closer to i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
f68e00a32b x86: move impress_friends and smp_check to cpus_done
the cpu count is changed accordingly: now, what matters is
online cpus.
Also, we add those functions for x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
693d4b8a64 x86: do smp tainting checks in a separate function
It will ease integration for x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
904541e2f7 x86: allow user to impress friends.
Impressing friends is a very important thing.
Do it in a separate function to make it even more
explicit, and ease integration.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
e1a14d0c13 x86: get rid of cpucount
weighting a map will do.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Ingo Molnar
1161705bd6 x86: fill cpu to apicid and present map in mpparse, fix
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
a6c422ccdb x86: fill cpu to apicid and present map in mpparse
This is the way x86_64 does, and complement the already
present patch that does the bios cpu to apicid mapping here

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
73bf102b1c x86: fill bios cpu to apicid maps
We fill the per-cpu (or array) that maps
bios cpu id to apicid in mpparse_32.c, the way x86_64 does

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
4fe29a8564 x86: use specialized routine for setup per-cpu area
We use the same routing as x86_64, moved now to setup.c.
Just with a few ifdefs inside.
Note that this routing uses prefill_possible_map().
It has the very nice side effect of allowing hotplugging of
cpus that are marked as present but disabled by acpi bios.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:01 +02:00
Glauber de Oliveira Costa
ccf82085ee x86: initialize map pointers in setup_32.c
this will serve as a reference as to whether or not to
use the per_cpu variables in mpparse. Done the same way
as x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
cbe879fc6c x86: define bios to apicid mapping
This mapping already exists in x86_64, just provide it for
i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
8154fa3740 x86: move assignment of CPU_PREPARE before do_boot_cpu
Done to match x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
f3ce4466ab x86: make __smp_prepare_cpu void
We have already removed the only condition that could fail here.
so just don't test for any return value

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
f915d7f46b x86: do tests before do_boot_cpu in i386
Do tests before do_boot_cpu in native_cpu_up for i386.
Tests are a little bit broader than originally, and are the
same as x86_64. Test for smp_callin is not applicable right now
and is deferred.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
b675f11127 x86: isolate logic to disable smp
Put it in a disable_smp() function, as x86_64 does

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
4780b261e2 x86: isolate sanity checking
Isolate all sanity checking in a smp_sanity_check()
function as x86_64 does.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
fa8004d8e0 x86: add barriers statement
goal is to have i386 and x86_64 closer, so we
add barriers to match

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
148a30f8cf x86: use APIC_INTEGRATED tests in x86_64
This patch does not change the behaviour of x86_64, since APIC_INTEGRATED
is always defined as (1). But the code now matches exactly i386 version
(well, this part of the code, at least)

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
5733f62749 x86: move state update out of ipi_lock
it does not need to be inside lock. Do the way i386 does.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
8f15b82e22 x86: move setup_secondary_clock a little bit down in the function
This is done so we call setup_secondary_clock() in the same place x86_64
does. A separate patch for this is appearantly not needed. But clock
initialization is such a delicate thing, that it's safer to do this way

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
3ff8171fee x86: don't call local_irq_enable before entering idle
the call to idle is guaranteed to do it.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
3b22ec7b13 x86: always enable irqs when entering idle
This matches x86_64 behaviour, which is a superior one IMHO

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
1d89a7f072 x86: merge smp_store_cpu_info
now that it is the same between arches, put it into smpboot.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:00 +02:00
Glauber de Oliveira Costa
f7401f7fe6 x86: call identify_secondary_cpu in smp_store_cpu_info
Call it conditionally for secondary cpus. This behaviour
matches i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
5745abfe86 x86: use identify_boot_cpu
Call this function instead of identify_cpu in bugs_64.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
7a636af664 x86: provide specialized identification routines for x86_64
provide two specialized identify_secondary_cpu() and identify_boot_cpu()
routines for x86_64. Although not strictly needed, they are functionally
correct, and will ease integration with i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
4f3ab1959a x86: decouple call to print_cpu_info from smp_store_cpu_info
This will ease integration with i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
82389871b8 x86: add an smp_apply_quirks to smpboot_32.c
The split of smp_store_cpu_info in a quirks-only part
will ease integration with x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
d0173aeac4 x86: use start_ipi_hook in x86_64
It is used to match i386. The definition for the non-paravirt
case is moved to smp.h instead of smp_32.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
1af8a0c1b3 x86: use apic_*_around instead of apic_write in x86_64
This patch replaces apic_read() for apic_read_around()
and apic_write for apic_write_around() in smpboot_64.c
We do it to have a common usage between x86_64 and i386.
In the former, it will always simply expand to apic_write

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
ba10485c2f x86: add loglevel to printks
Add loglevel facilities to printks in __inquire_remote_apic.
the levels are the ones to match x86_64 ones.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Glauber de Oliveira Costa
26c6b5ea55 x86: change var types in __inquire_remote_apic
change some variables' types in __inquire_remote_apic to
match x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Pavel Machek
b552da8740 x86 iommu: add more documentation
Fix coding style in pci-dma_64.c and add stubs for documentation. I
hope someone fills the rest, I understand maybe off and soft...

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
037cab07e9 x86: move mp_bus_id_to_node to numa.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
e129cb490e x86: move mp_bus_id_to_local to numa.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
c0a282c251 x86: make mp_bus_id_to_type optional
[ mingo@elte.hu: fix boot regression. ]

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
9e0a2de268 x86: rearrange bus_type parse
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
643befed10 x86: use not_pci bitmap #6
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
9c0076cb34 x86: use not_pci bitmap #5
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
6728801dce x86: use not_pci bitmap #4
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
47cab822d6 x86: use not_pci bitmap #3
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:59 +02:00
Alexey Starikovskiy
73b2961bfa x86: use not_pci bitmap #2
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Alexey Starikovskiy
d27e2b8e2a x86: use not_pci bitmap #1
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Alexey Starikovskiy
a6333c3ccb x86: add mp_bus_not_pci bitmap to mpparse_32.c
Signed-off: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Yinghai Lu
8643f9d02a x86: get boot_cpu_id as early for k8_scan_nodes
When acpi=off or there is no SRAT defined, apicid_to_node is got from K8
Northbridge PCI configuration space in k8_scan_nodes() in
arch/x86_64/mm/k8toplogy.c.

The problem is that it assumes bsp apic id is 0 at that point.

For four socket system with Quad core cpus installed, all cpus apic id
is offset by 4, and bsp apic id is 4.

For eight socket system with dual core cpus installed, all cpus apic id
is offset by 2, and bsp apic id is 2.

We need get boot_cpu_id --- bsp apic id, before k8_scan_nodes by called.

So create early_acpi_boot_init and early_get_smp_config for get boot_cpu_id.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Alexey Starikovskiy
6079d2d5d1 x86: move quad_local_to_mp_bus_id to numa.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Jan Beulich
5b0e508415 x86: prevent unconditional writes to DebugCtl MSR
Otherwise, enabling (or better, subsequent disabling) of single
stepping would cause a kernel oops on CPUs not having this MSR.

The patch could have been added a conditional to the MSR write in
user_disable_single_step(), but centralizing the updates seems safer
and (looking forward) better manageable.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Markus Metzger <markus.t.metzger@intel.com>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Gautham R Shenoy
f694010185 x86: Don't send RESCHEDULE_VECTOR to offlined cpus
In the x86 native_smp_send_reschedule_function(), don't send the IPI if the
cpu has gone offline already. Warn nevertheless!!

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Joe Perches
e40c0fe6b0 x86: cleanup duplicate includes
Signed-off-by: Joe Perches <joe@perches.com>

 arch/x86/kernel/reboot.c      |    1 -
 include/asm-x86/elf.h         |    5 ++---
 include/asm-x86/posix_types.h |    8 +-------
 include/asm-x86/processor.h   |    3 +--
 include/asm-x86/unistd.h      |    8 +-------
 5 files changed, 5 insertions(+), 20 deletions(-)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Paolo Ciarrocchi
537d916066 x86: coding style fixes to arch/x86/kernel/setup_32.c
Fix:

  ERROR: do not initialise externals to 0 or NULL

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Yinghai Lu
01aaea1afb x86: introduce initial apicid
store initial_apicid from early identify. it is could be different from
phys_proc_id later.

also print it out in /proc/cpuinfo.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Mathieu Desnoyers
e587cadd8f x86: enhance DEBUG_RODATA support - alternatives
Fix a memcpy that should be a text_poke (in apply_alternatives).

Use kernel_wp_save/kernel_wp_restore in text_poke to support DEBUG_RODATA
correctly and so the CPU HOTPLUG special case can be removed.

Add text_poke_early, for alternatives and paravirt boot-time and module load
time patching.

Changelog:

- Fix text_set and text_poke alignment check (mixed up bitwise and and or)
- Remove text_set
- Export add_nops, so it can be used by others.
- Document text_poke_early.
- Remove clflush, since it breaks some VIA architectures and is not strictly
  necessary.
- Add kerneldoc to text_poke and text_poke_early.
- Create a second vmap instead of using the WP bit to support Xen and VMI.
- Move local_irq disable within text_poke and text_poke_early to be able to
  be sleepable in these functions.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: Andi Kleen <andi@firstfloor.org>
CC: pageexec@freemail.hu
CC: H. Peter Anvin <hpa@zytor.com>
CC: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:58 +02:00
Harvey Harrison
77bf90ed66 x86: replace remaining __FUNCTION__ occurances
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Yinghai Lu
282bfe21cf x86: show apicid for cpu in proc
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Yinghai Lu
a706221186 x86: fix amd_detect_cmp
for system with apicid lifting, boot cpu apicid will be 4

got:

  CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
  CPU: L2 Cache: 512K (64 bytes/line)
  CPU 0/4 -> Node 0
  CPU: Physical Processor ID: 1
  CPU: Processor Core ID: 0

so try to offset apicid back before get phys_proc_id with bits shift.
then we can get correct socket ID

also remove remove cpu_data(0) reference.

because cpu_data(0) only be ready after smp_prepare_cpus with the assignment
from boot_cpu_data to current_cpu_data aka cpu_data(0).

and check_bugs()==>identify_cpu(&boot_cpu_data) is quite before than
smp_prepare_cpus. So just use boot_cpu_id instead.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
97b44ae6cd x86: add KERN_INFO to show_unhandled_signals printout
Before:
   total: 0 errors, 1 warnings, 678 lines checked
After:
   total: 0 errors, 0 warnings, 678 lines checked

No code changed:

arch/x86/kernel/signal_32.o:

   text	   data	    bss	    dec	    hex	filename
   5333	      0	      4	   5337	   14d9	signal_32.o.before
   5336	      0	      4	   5340	   14dc	signal_32.o.after

md5:
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.before.asm
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
eee6dd1572 x86: move extern declaration to vdso.h
Before:
   total: 0 errors, 3 warnings, 685 lines checked
After:
   total: 0 errors, 1 warnings, 678 lines checked

No code changed:

arch/x86/kernel/signal_32.o:

   text	   data	    bss	    dec	    hex	filename
   5333	      0	      4	   5337	   14d9	signal_32.o.before
   5333	      0	      4	   5337	   14d9	signal_32.o.after

md5:
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.before.asm
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
7e907f4898 x86: clean up arch/x86/kernel/signal_32.c
Before:
   total: 21 errors, 6 warnings, 665 lines checked
After:
   total: 0 errors, 3 warnings, 685 lines checked

No code changed:

arch/x86/kernel/signal_32.o:

   text	   data	    bss	    dec	    hex	filename
   5333	      0	      4	   5337	   14d9	signal_32.o.before
   5333	      0	      4	   5337	   14d9	signal_32.o.after

md5:
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.before.asm
   c279e98012a2808e90cfa2a7787e42a4  signal_32.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
a711317021 x86: remove DEBUG_SIG
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Joe Perches
c1db29dbc7 x86: arch/x86/kernel/cpu/feature_names.c - use angle brackets for include
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Ingo Molnar
f668964ea1 x86: clean up i387.c
minor coding style cleanups.

Before:
   total: 0 errors, 3 warnings, 479 lines checked
After:
   total: 0 errors, 1 warnings, 483 lines checked

No code changed:

arch/x86/kernel/i387.o:

   text	   data	    bss	    dec	    hex	filename
   2379	      4	      8	   2391	    957	i387.o.before
   2379	      4	      8	   2391	    957	i387.o.after

md5:
   e1434553a3b4ff1f52ad97a68b1fad8a  i387.o.before.asm
   e1434553a3b4ff1f52ad97a68b1fad8a  i387.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
e104383fbf x86: use cpu_relax instead of rep_nop
This is done for smpboot_32.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
e90009bcc1 x86: use wait_for_init_deassert in x86_64
wraps the busy loop for wait_for_init_deasserted() in a function,
so smp_callin in x86_64 looks like more i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
91718e8d13 x86: unify setup_trampoline
setup_trampoline() looks very similar between architectures, and this
patch unifies them. The i386 version allocates bootmem memory, while
the x86_64 version uses a fixed address.

In this patch, we initialize the global trampoline_base to the x86_64 version,
and i386 allocation can later override it.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:57 +02:00
Glauber Costa
4206882939 x86: move trampoline arrays extern definition to smp.h
In here, they can serve both architectures

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
89b08200ad x86: make x86_64 accept the max_cpus parameter
The parameter passing parsing is done in the common smpboot.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
69c18c15d3 x86: merge __cpu_disable and cpu_die
They are now equal, and are moved to a common file

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
e9a6cb96fa x86: do not clear cpu_online_map
it was already cleared two lines above, and so, this removal
is bogus

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
045f9d2202 x86: use remove_from_maps in cpu_disable
it is already used in x86_64. In i386, it only
removes from cpu_online_map

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
fc25da9ec6 x86: remove vector_lock around cpu_online_map
This lock does not protect cpu_online_map, so its
length can be shortened, and in some cases, removed.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
70708a18e8 x86: move cpu_coregroup_map to common file
it is equal between architectures

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
768d95051b x86: move sibling functions to common file
set_cpu_sibling_map() and remove_sibling_info() are
equal between architectures, and are now moved to common
file

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
61d5989973 x86: make remove_siblinginfo non-static
this is done to match i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
1452207689 x86: make set_cpu_sibling_map nonstatic
And move its extern definition to smp.h, the common header

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
a355352b97 x86: move equal types to common file
move definitions that are now equal in type from
smpboot_{32,64}.c to smpboot.c

cpu_callin_map is put temporarily in smp_64.h (already
exists in smp_32.h), and will soon be merged.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
5382e89670 x86: adjust types in smpcommon_32.c
so they can have the same type as x86_64

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
0941ecb55f x86: get rid of smp_32.c and smp_64.c
This patch merges the copyright notices, and valuable
comments that were left back on smp_{32,64}.c. With that,
files are empty, and are deleted

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
c048fdfe61 x86: create tlb files
this patch creates tlb_32.c and tlb_64.c, with
tlb-related functions that used to live in smp*.c files.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
8202350367 x86: create ipi.c
This patch moves all ipi and apic related functions
from smp_32.c to ipi.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
f9e47a126b x86: create smp.c
this patch moves all the functions and data structures that look
like exactly the same from smp_{32,64}.c to smp.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
377d698426 x86: unify smp_send_stop
function definition is moved to common header.
x86_64 version is now called native_smp_send_stop

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:56 +02:00
Glauber Costa
321183c145 x86: add reboot_force test to native_smp_send_stop
This can be safely added to i386. After that,
functions look exactly the same for both arches

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
3be5b49e8f x86: make stop_this_cpu looks exactly equal in both arches
with the hlt_works change, it is possible to have i386
and x86_64 stop_this_cpu() looking exactly the same. They
can, after that, be merged.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
2513926c28 x86: change x86_64 smp_call_function_mask to look alike i386
the two versions (the inner version, and the outer version, that takes
the locks) of smp_call_function_mask are made into one. With the changes,
i386 and x86_64 versions look exactly the same.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
3a36d1e435 x86: provide __smp_call_function
This function is used in smp_send_stop(). It's like
smp_call_function_mask, but always go to all online cpus,
and does not take any locks.

It is added to x86_64, but will soon be unified in a common file

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
e32640a2cd x86: create smpcommon.c
This patch creates smpcommon.c with functions that are
equal between architectures. The i386-only init_gdt
is ifdef'd.

Note that smpcommon.o figures twice in the Makefile:
this is because sub-architectures like voyager that does
not use the normal smp_$(BITS) files also have to access them

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
3428f3d6ca x86: remove irqs disabled warning.
there's already a warning in the topmost function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:55 +02:00
Glauber Costa
7930e53422 x86: remove export for smp_call_function_mask.
with this removal, exports for both i386 and x86_64,
regarding the "smp_call_function" series are now the same.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:54 +02:00
Glauber Costa
68a1c3f8cd x86: move prefill_possible_map to common file
this patches moves prefill_possible_map() to smpboot.c
Right now it is x86_64-specific, but nothing intrinsically
prevents it to be used by i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
7b1292e237 x86: use disabled_cpus in i386
this patch allows a cpu to be marked as present but disabled in i386,
just as x86_64 currently does.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
c559764923 x86: unify smp_cpus_done
definition is moved to common header. x86_64 version is now called
native_smp_cpus_done

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
7557da6720 x86: unify smp_prepare_cpus
definition is moved to common header. x86_64 version is now called
native_smp_prepare_cpus

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
1e3fac83da x86: unify prepare_boot_cpu
definition is moved to common header. x86_64 version is now called
native_prepare_boot_cpu

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
71d195492a x86: unify __cpu_up.
function definition is moved to common header. x86_64 version
is now called native_cpu_up

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
64b1a21e09 x86: unify smp_call_function_mask
definition is moved to common header, x86_64 function name
now is native_smp_call_function_mask

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
8678969e60 x86: merge smp_send_reschedule
function definition is moved to common header, x86_64 version is now called
native_smp_send_reschedule

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Glauber Costa
c76cb36846 x86: move smp_ops extern declaration to common header
the smp_ops symbol is temporarily defined in smp_64.c, but it will soon
be unified

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:53 +02:00
Alexander van Heukelum
ecd94c0809 x86: reserve end-of-conventional-memory to 1MB, 64-bit, use paravirt_enabled
Jeremy Fitzhardinge pointed out that looking at the boot_params
struct to determine if the system is running in a paravirtual
environment is not reliable for the Xen case, currently. He also
points out that there already exists a function to determine if
the system is running in a paravirtual environment. So let's use
that instead. This gets rid of the preprocessor test too.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Alexander van Heukelum
2fde61fdb0 x86: reserve end-of-conventional-memory to 1MB, 32-bit, use paravirt_enabled
Jeremy Fitzhardinge pointed out that looking at the boot_params
struct to determine if the system is running in a paravirtual
environment is not reliable for the Xen case, currently. He also
points out that there already exists a function to determine if
the system is running in a paravirtual environment. So let's use
that instead. This gets rid of the preprocessor test too.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Rusty Russell
3c2047cd32 x86: if we cannot calibrate the TSC, we panic.
The current tsc_init() clears the TSC feature bit if the TSC khz
cannot be calculated, causing us to panic in
arch/x86/kernel/cpu/bugs.c check_config().  We should simply mark it
unstable.

Frankly, someone should take an axe to this code.  mark_tsc_unstable()
not only marks it unstable, but sets tsc_enabled to 0, which seems
redundant but is actually important here because means it won't be
used by sched_clock() either.  Perhaps a tristate enum "UNUSABLE,
UNSTABLE, OK" would be clearer, and separate mark_tsc_unstable() and
mark_tsc_broken() functions?

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Alexander van Heukelum
320a6b2efc x86: reserve end-of-conventional-memory to 1MB, 64-bit
This patch is an add-on to the 64-bit ebda patch. It makes
the functions reserve_ebda_region (renamed from reserve_ebda)
and copy_e820_map equal to the 32-bit versions of the previous
patch.

Changes:

Use u64 and u32 for local variables in copy_e820_map.

The amount of conventional memory and the start of the EBDA are
detected by reading the BIOS data area directly. Paravirtual
environments do not provide this area, so we bail out early
in that case. They will just have to set up a correct memory
map to start with.

Add a safety net for zeroed out BIOS data area.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Alexander van Heukelum
f6eb62b692 x86: reserve_early end-of-conventional-memory to 1MB, 64-bit
Explicitly reserve_early the whole address range from the end of
conventional memory as reported by the bios data area up to the
1Mb mark. Regard the info retrieved from the BIOS data area with
a bit of paranoia, though, because some biosses forget to register
the EBDA correctly.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:52 +02:00
Alexander van Heukelum
dedd04be71 x86: reserve end-of-conventional-memory to 1MB on 32-bit
This patch adds explicit detection of the EBDA and reservation
of the rom and adapter address space 0xa0000-0x100000 to the
i386 kernels. Before this patch, the EBDA size was hardcoded
as 4Kb. Also, the reservation of the adapter range was done by
modifying the e820 map which is now not necessary any longer,
and that code is removed from copy_e820_map.

The amount of conventional memory and the start of the EBDA are
detected by reading the BIOS data area directly. Paravirtual
environments do not provide this area, so we bail out early
in that case. They will just have to set up a correct memory
map to start with.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Paolo Ciarrocchi
c9cf39ae64 x86: coding style fixes to x86/kernel/early_printk.c
Depends on:
[PATCH 2/3] x86: coding style fixes to arch/x86/kernel/early_printk.c

Remove two:
ERROR: do not initialise statics to 0 or NULL

paolo@paolo-desktop:/tmp/c$ size *
   text    data     bss     dec     hex filename
   1172     280      12    1464     5b8 early_printk.o.after
   1172     280      12    1464     5b8 early_printk.o.before

This patch is changing the binary output:

paolo@paolo-desktop:/tmp/c$ md5sum *
dad9a9a881e0eeda62cc5645bd3d7cad  early_printk.o.after
da32f5cd8f248970e4809e1005393e95  early_printk.o.before

because the two variables moved to another section. No
change in functionality.

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Paolo Ciarrocchi
e941f27a7a x86: coding style fixes to arch/x86/kernel/early_printk.c
Before:
total: 17 errors, 3 warnings, 254 lines checked

After:
total: 2 errors, 3 warnings, 254 lines checked

paolo@paolo-desktop:/tmp/b$ md5sum *
da32f5cd8f248970e4809e1005393e95  early_printk.o.after
da32f5cd8f248970e4809e1005393e95  early_printk.o.before

paolo@paolo-desktop:/tmp/b$ size *
   text    data     bss     dec     hex filename
   1172     280      12    1464     5b8 early_printk.o.after
   1172     280      12    1464     5b8 early_printk.o.befor

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Alexey Dobriyan
11ae9dd481 x86: switch to proc_create()
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
b5964405fb x86: clean up traps_32.c
Before:
   total: 86 errors, 29 warnings, 1248 lines checked
After:
   total: 0 errors, 17 warnings, 1281 lines checked

No code changed:

arch/x86/kernel/traps_32.o:

   text	   data	    bss	    dec	    hex	filename
   8711	   2168	     72	  10951	   2ac7	traps_32.o.before
   8711	   2168	     72	  10951	   2ac7	traps_32.o.after

(md5 sums differ because some stack offset positions changed.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
10cd5a1e54 x86: clean up cpu capabilities accesses, transmeta.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
d0e95ebdc5 x86: clean up cpu capabilities in arch/x86/kernel/cpu/intel.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
1d007cd5ae x86: clean up cpu capabilities accesses, cyrix.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
4cbe668add x86: clean up cpu capabilities accesses, common.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
e1a94a974c x86: clean up cpu capabilities accesses, centaur.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:51 +02:00
Ingo Molnar
16282a8e25 x86: clean up cpu capabilities accesses, amd.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Ingo Molnar
9716951efd x86: clean up cpu capabilities accesses, generic
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Yinghai Lu
d32de19ca9 x86: remove wrong setting about CONSTANT_TSC for intel cpu
early_init_intel() on 64-bit is introduced by

  commit 2b16a23538
  Author: Andi Kleen <ak@suse.de>
  Date:   Wed Jan 30 13:32:40 2008 +0100

      x86: move X86_FEATURE_CONSTANT_TSC into early cpu feature detection

sets CONSTANT_TSC for intel cpus - but it is already set in init_intel().

don't need to set that two times in early_init_intel() and init_intel().
this patch removes the init_intel() one.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Yinghai Lu
f8fffa4583 x86: apic_is_clustered_box for vsmp
quad core 8 socket system will have apic id lifting.the apic id range could
be [4, 0x23]. and apic_is_clustered_box will think that need to three clusters
and that is larger than 2. So it is treated as a clustered_box.

and will get:

   Marking TSC unstable due to TSCs unsynchronized

even if the CPUs have X86_FEATURE_CONSTANT_TSC set.

this quick fix will check if the cpu is from AMD.

but vsmp still needs that checking...

this patch is fix to make sure that vsmp not to be passed.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
34048c9e92 x86: coding style fixes to arch/x86/kernel/cpu/common.c
Before:
   total: 55 errors, 6 warnings, 727 lines checked
After:
   total: 0 errors, 3 warnings, 734 lines checked

No code changed:

arch/x86/kernel/cpu/common.o:

   text	   data	    bss	    dec	    hex	filename
   3500	   4611	     44	   8155	   1fdb	common.o.before
   3500	   4611	     44	   8155	   1fdb	common.o.after

md5:
   e37091f11fbeb682c0db152ac3022a38  common.o.before.asm
   e37091f11fbeb682c0db152ac3022a38  common.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
94a9fa4142 x86: coding style fixes to arch/x86/kernel/msr.c
Before:
   total: 2 errors, 0 warnings, 231 lines checked
After:
   total: 0 errors, 0 warnings, 231 lines checked

No code changed:

arch/x86/kernel/msr.o:

   text	   data	    bss	    dec	    hex	filename
   1199	     12	      4	   1215	    4bf	msr.o.before
   1199	     12	      4	   1215	    4bf	msr.o.after

md5:
   604be0d07d829bc52a9346babd084bdc  msr.o.before.asm
   604be0d07d829bc52a9346babd084bdc  msr.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
adf85265b4 x86: coding style fixes to arch/x86/kernel/cpu/cyrix.c
Before:
   total: 46 errors, 10 warnings, 450 lines checked
After:
   total: 1 errors, 10 warnings, 449 lines checked

No code changed:

arch/x86/kernel/cpu/cyrix.o:

   text	   data	    bss	    dec	    hex	filename
   2048	    908	      4	   2960	    b90	cyrix.o.before
   2048	    908	      4	   2960	    b90	cyrix.o.after

md5:
   9add5e69dbd788f91ff24eea8462dad7  cyrix.o.before.asm
   9add5e69dbd788f91ff24eea8462dad7  cyrix.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
d677759e99 x86: coding style fixes to arch/x86/kernel/cpu/mcheck/mce_32.c
Before:
   total: 10 errors, 3 warnings, 90 lines checked
After:
   total: 0 errors, 3 warnings, 90 lines checked

No code changed:

arch/x86/kernel/cpu/mcheck/mce_32.o:

   text	   data	    bss	    dec	    hex	filename
    287	     42	     12	    341	    155	mce_32.o.before
    287	     42	     12	    341	    155	mce_32.o.after

md5:
   fede5ff8e6bc3f62e8e691ca6c45eb39  mce_32.o.before.asm
   fede5ff8e6bc3f62e8e691ca6c45eb39  mce_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
4de816297d x86: coding style fixes to arch/x86/kernel/cpu/mcheck/winchip.c
Before:
   total: 4 errors, 0 warnings, 36 lines checked
After:
   total: 0 errors, 0 warnings, 36 lines checked

No code changed:

arch/x86/kernel/cpu/mcheck/winchip.o:

   text	   data	    bss	    dec	    hex	filename
    222	      0	      4	    226	     e2	winchip.o.before
    222	      0	      4	    226	     e2	winchip.o.after

md5:
   9caefa12256c5f7d71ef324f6d01a2d5  winchip.o.before.asm
   9caefa12256c5f7d71ef324f6d01a2d5  winchip.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
714a9ac2ef x86: coding style fixes to arch/x86/kernel/cpu/mcheck/non-fatal.c
Before:
   total: 5 errors, 5 warnings, 91 lines checked
After:
   total: 0 errors, 0 warnings, 94 lines checked

No code changed:

arch/x86/kernel/cpu/mcheck/non-fatal.o:

   text	   data	    bss	    dec	    hex	filename
    441	     80	      4	    525	    20d	non-fatal.o.before
    441	     80	      4	    525	    20d	non-fatal.o.after

md5:
   137bc114d2020ad331d5e76444a2c7d3  non-fatal.o.before.asm
   137bc114d2020ad331d5e76444a2c7d3  non-fatal.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
83e714e82f x86: coding style fixes to arch/x86/kernel/vm86_32.c
Before:
   total: 64 errors, 18 warnings, 840 lines checked
After:
   total: 12 errors, 15 warnings, 844 lines checked

No code changed:

arch/x86/kernel/vm86_32.o:

   text	   data	    bss	    dec	    hex	filename
   4449	     28	    132	   4609	   1201	vm86_32.o.before
   4449	     28	    132	   4609	   1201	vm86_32.o.after

md5:
   e4e51ed7689d17f04148554a3c6d5bb6  vm86_32.o.before.asm
   e4e51ed7689d17f04148554a3c6d5bb6  vm86_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
fb87a298fb x86: coding style fixes to arch/x86/kernel/cpu/amd.c
Before:
   total: 42 errors, 26 warnings, 350 lines checked
After:
   total: 0 errors, 26 warnings, 352 lines checked

No code changed:

arch/x86/kernel/cpu/amd.o:

   text	   data	    bss	    dec	    hex	filename
   1936	    328	      0	   2264	    8d8	amd.o.before
   1936	    328	      0	   2264	    8d8	amd.o.after

md5:
   873430a88faaf31bb4bbfe3a2a691e45  amd.o.before.asm
   873430a88faaf31bb4bbfe3a2a691e45  amd.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
f975182719 x86: coding style fixes to arch/x86/kernel/cpu/transmeta.c
Before:
   total: 13 errors, 3 warnings, 105 lines checked
After:
   total: 0 errors, 3 warnings, 107 lines checked

No code changed:

arch/x86/kernel/cpu/transmeta.o:

   text	   data	    bss	    dec	    hex	filename
    713	    324	      0	   1037	    40d	transmeta.o.before
    713	    324	      0	   1037	    40d	transmeta.o.after

md5:
   19abe2cafac617e1e2aadc4aa4e9923b  transmeta.o.before.asm
   19abe2cafac617e1e2aadc4aa4e9923b  transmeta.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:50 +02:00
Paolo Ciarrocchi
e0f0257044 x86: coding style fixes to arch/x86/kernel/cpu/mtrr/state.c
Before:
   total: 6 errors, 5 warnings, 80 lines checked
After:
   total: 0 errors, 4 warnings, 82 lines checked

No code changed:

arch/x86/kernel/cpu/mtrr/state.o:

   text	   data	    bss	    dec	    hex	filename
    313	      0	      4	    317	    13d	state.o.before
    313	      0	      4	    317	    13d	state.o.after

md5:
   a0fbd61096205f9180f0bf45ed386d61  state.o.before.asm
   a0fbd61096205f9180f0bf45ed386d61  state.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Paolo Ciarrocchi
0067cc996e x86: coding style fixes to arch/x86/kernel/mca_32.c
Before:
   total: 42 errors, 3 warnings, 469 lines checked
After:
   total: 0 errors, 3 warnings, 479 lines checked

No code changed:

arch/x86/kernel/mca_32.o:

   text	   data	    bss	    dec	    hex	filename
   1832	    288	      5	   2125	    84d	mca_32.o.before
   1832	    288	      5	   2125	    84d	mca_32.o.after

md5:
   c0e45e2b743ce26349eb07dc53e80b94  mca_32.o.before.asm
   c0e45e2b743ce26349eb07dc53e80b94  mca_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Paolo Ciarrocchi
65eb6b4326 x86: coding style fixes to arch/x86/kernel/cpu/intel.c
Before:
   total: 37 errors, 16 warnings, 366 lines checked
After:
   total: 0 errors, 15 warnings, 369 lines checked

No code changed:

arch/x86/kernel/cpu/intel.o:

   text	   data	    bss	    dec	    hex	filename
   1534	    452	      0	   1986	    7c2	intel.o.before
   1534	    452	      0	   1986	    7c2	intel.o.after

md5:
   1ca348a06de6eb354c4b6ea715a57db5  intel.o.before.asm
   1ca348a06de6eb354c4b6ea715a57db5  intel.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Paolo Ciarrocchi
60e11746d9 x86: coding style fixes to arch/x86/kernel/summit_32.c
Before:
   total: 20 errors, 17 warnings, 180 lines checked
After:
   total: 0 errors, 17 warnings, 183 lines checked

No code changed:

arch/x86/kernel/summit_32.o:

   text	   data	    bss	    dec	    hex	filename
    932	    192	      0	   1124	    464	summit_32.o.before
    932	    192	      0	   1124	    464	summit_32.o.after

md5:
   217aa5f002f217e56ef9d8e5c74b60e0  summit_32.o.before.asm
   217aa5f002f217e56ef9d8e5c74b60e0  summit_32.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Yinghai Lu
1e934dda0c x86: insert_resorce for lapic addr after e820_reserve_resources
when comparing the e820 direct from BIOS, and the one by kexec:

 BIOS-provided physical RAM map:
- BIOS-e820: 0000000000000000 - 0000000000097400 (usable)
+ BIOS-e820: 0000000000000100 - 0000000000097400 (usable)
  BIOS-e820: 0000000000097400 - 00000000000a0000 (reserved)
  BIOS-e820: 00000000000e6000 - 0000000000100000 (reserved)
  BIOS-e820: 0000000000100000 - 00000000dffa0000 (usable)
- BIOS-e820: 00000000dffae000 - 00000000dffb0000 type 9
+ BIOS-e820: 00000000dffae000 - 00000000dffb0000 (reserved)
  BIOS-e820: 00000000dffb0000 - 00000000dffbe000 (ACPI data)
  BIOS-e820: 00000000dffbe000 - 00000000dfff0000 (ACPI NVS)
  BIOS-e820: 00000000dfff0000 - 00000000e0000000 (reserved)
  BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
- BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
             =======> that is the local apic address... somewhere we lost it
  BIOS-e820: 00000000ff700000 - 0000000100000000 (reserved)
  BIOS-e820: 0000000100000000 - 0000004020000000 (usable)

found one entry about reserved is missing for the kernel by kexec.

it turns out init_apic_mappings is called before e820_reserve_resources
in setup_arch. but e820_reserve_resources is using request_resource.
it will not handle the conflicts.

there are three ways to fix it:

1. change request_resource in e820_reserve_resources to to insert_resource
2. move init_apic_mappings after e820_reserve_resources
3. use late_initcall to insert lapic resource.

this patch is using method 3, that is less intrusive.

in later version could consider to use method 1.

before patch
fed20000-ffffffff : PCI Bus #00
  fee00000-fee00fff : Local APIC
  fefff000-feffffff : pnp 00:09
  ff700000-ffffffff : reserved

with patch will get map in first kernel

fed20000-ffffffff : PCI Bus #00
  fee00000-fee00fff : Local APIC
    fee00000-fee00fff : reserved
  fefff000-feffffff : pnp 00:09
  ff700000-ffffffff : reserved

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Yinghai Lu
3def3d6ddf x86: clean up e820_reserve_resources on 64-bit
e820_resource_resources could use insert_resource instead of request_resource
also move code_resource, data_resource, bss_resource, and crashk_res
out of e820_reserve_resources.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Eric W. Biederman
700efc1b9f x86: introduce kernel/head32.c
Copy x86_64 and add a head32.c so we can start moving early
architecture initialization out of assembly.

[ Sam Ravnborg <sam@ravnborg.org>: updated it to x86 ]

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Yinghai Lu
322850af8d x86: make amd quad core 8 socket system not be clustered_box, #2
quad core 8 socket system will have apic id lifting.the apic id range could
be [4, 0x23]. and apic_is_clustered_box will think that need to three clusters
and that is large than 2. So it is treated as clustered_box.

and will get

Marking TSC unstable due to TSCs unsynchronized

even the CPUs have X86_FEATURE_CONSTANT_TSC set.

this patch will check if the cpu is from AMD.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Ingo Molnar
513ad84bf6 x86: de-macro start_thread()
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Paolo Ciarrocchi
48e6b7a050 x86: coding style fixes to arch/x86/kernel/cpu/umc.c
Before:
   total: 3 errors, 1 warnings, 23 lines checked
After:
   total: 0 errors, 0 warnings, 25 lines checked

No code changed:

arch/x86/kernel/cpu/umc.o:

   text	   data	    bss	    dec	    hex	filename
     24	    616	      0	    640	    280	umc.o.before
     24	    616	      0	    640	    280	umc.o.after

md5:
   e8daa3eaed0963a0cdd2e83c2e1f9823  umc.o.before.asm
   e8daa3eaed0963a0cdd2e83c2e1f9823  umc.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Paolo Ciarrocchi
2c5847837f x86: coding style fixes to arch/x86/kernel/cpu/mcheck/p6.c
Before:
   total: 16 errors, 13 warnings, 122 lines checked
After:
   total: 0 errors, 0 warnings, 122 lines checked

No code changed:

arch/x86/kernel/cpu/mcheck/p6.o:

   text	   data	    bss	    dec	    hex	filename
   1082	      0	      8	   1090	    442	p6.o.before
   1082	      0	      8	   1090	    442	p6.o.after

md5:
   4e283fbc1b68240f1724d9725007d379  p6.o.before.asm
   4e283fbc1b68240f1724d9725007d379  p6.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:49 +02:00
Hiroshi Shimamoto
eb19067d16 x86: unify cpu/proc|_64.c
Now cpu/proc.c and cpu/proc_64.c are same.
So cpu/proc_64.c can be removed.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:48 +02:00
Hiroshi Shimamoto
2aef77204e x86: cosmetic unification cpu/proc|_64.c
make cpu/proc.c and cpu/proc_64.c same.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:48 +02:00
Hiroshi Shimamoto
f84c3a429f x86: add power management line in /proc/cpuinfo
Change /proc/cpuinfo on 32-bit, it will look like on 64-bit.
'power management' line is added and power management information
will be printed at the line.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:48 +02:00
Hiroshi Shimamoto
a967ceac01 x86: make cpu/proc|_64.c similar
clean up for unification.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:48 +02:00
Hiroshi Shimamoto
8fa6878ffc x86: split cpuinfo from setup_64.c into cpu/proc_64.c
x86 /proc/cpuinfo code can be unified.
This is the first step of unification.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:48 +02:00
Paolo Ciarrocchi
c99aa3804e x86: coding style fixes to arch/x86/kernel/cpu/nexgen.c
arch/x86/kernel/cpu/nexgen.o:
   text    data     bss     dec     hex filename
    111     316       0     427     1ab nexgen.o.before
    111     316       0     427     1ab nexgen.o.after
md5:
 e796efefea9ebc6644338bad226599ee  nexgen.o.before.asm
 e796efefea9ebc6644338bad226599ee  nexgen.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:48 +02:00
Paolo Ciarrocchi
8000a83f43 x86: coding style fixes to arch/x86/kernel/x8664_ksyms_64.c
arch/x86/kernel/x8664_ksyms_64.o:
   text    data     bss     dec     hex filename
      0       0       0       0       0 x8664_ksyms_64.o.before
      0       0       0       0       0 x8664_ksyms_64.o.after
md5:
2dd2d82a2b440a3c29b9ac9ce3221994  x8664_ksyms_64.o.before.asm
2dd2d82a2b440a3c29b9ac9ce3221994  x8664_ksyms_64.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:48 +02:00
Paolo Ciarrocchi
1577720524 x86: coding style fixes to arch/x86/kernel/cpu/mcheck/p5.c
The patch make the file errors free.
Only 4 "WARNING: line over 80 characters" left.

arch/x86/kernel/cpu/mcheck/p5.o:
   text    data     bss     dec     hex filename
    452       0       4     456     1c8 p5.o.before
    452       0       4     456     1c8 p5.o.after
md5:
50c945ef150aa95bf0481cc3e1dc3315  p5.o.before.asm
50c945ef150aa95bf0481cc3e1dc3315  p5.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:48 +02:00
Paolo Ciarrocchi
325f86ec6d x86: coding style fixes to arch/x86/kernel/syscall_64.c
After the patch:
total: 0 errors, 1 warnings, 29 lines checked

no code changed:

arch/x86/kernel/syscall_64.o:
   text    data     bss     dec     hex filename
   2304       0       0    2304     900 syscall_64.o.before
   2304       0       0    2304     900 syscall_64.o.after
md5:
0fdbb875cde8892296585226b92f4333  syscall_64.o.before.asm
0fdbb875cde8892296585226b92f4333  syscall_64.o.after.asm

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:40:48 +02:00
Ingo Molnar
edc05e6de3 x86: more coding style fixes in centaur.c
no code changed:

 arch/x86/kernel/cpu/centaur.o:
    text    data     bss     dec     hex filename
    1031     324       0    1355     54b centaur.o.before
    1031     324       0    1355     54b centaur.o.after

 md5:
  4f306a7f980b58eb69c4bdcfcde565f1  centaur.o.before.asm
  4f306a7f980b58eb69c4bdcfcde565f1  centaur.o.after.asm

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
Paolo Ciarrocchi
29a9994bd8 x86: coding style fixes for arch/x86/kernel/cpu/centaur.c
Kills more than 150 errors/warnings

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
David P. Reed
04aaa7ba09 x86: fix cmos read and write to not use inb_p and outb_p
fix code to access CMOS rtc registers so that it does not use inb_p and
outb_p routines, which are deprecated.  Extensive research on all known
CMOS RTC chipset timing shows that there is no need for a delay in
accessing the registers of these chips even on old machines. These chipa
are never on an expansion bus, but have always been "motherboard"
resources, either in the processor chipset or explicitly on the
motherboard, and they are not part of the ISA/LPC or PCI buses, so
delays should not be based on bus timing. The reason to fix it:

 1) port 80 writes often hang some laptops that use ENE EC chipsets,
    esp. those designed and manufactured by Quanta for HP;

 2) RTC accesses are timing sensitive, and extra microseconds may matter;

 3) the new "io_delay" function is calibrated by expansion bus timing needs,
    thus is not appropriate for access to CMOS rtc registers.

Signed-off-by: David P. Reed <dpreed@reed.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
Thomas Petazzoni
03ae5768b6 x86: use ELF section to list CPU vendor specific code
Replace the hardcoded list of initialization functions for each CPU
vendor by a list in an ELF section, which is read at initialization in
arch/x86/kernel/cpu/cpu.c to fill the cpu_devs[] array. The ELF
section, named .x86cpuvendor.init, is reclaimed after boot, and
contains entries of type "struct cpu_vendor_dev" which associates a
vendor number with a pointer to a "struct cpu_dev" structure.

This first modification allows to remove all the VENDOR_init_cpu()
functions.

This patch also removes the hardcoded calls to early_init_amd() and
early_init_intel(). Instead, we add a "c_early_init" member to the
cpu_dev structure, which is then called if not NULL by the generic CPU
initialization code. Unfortunately, in early_cpu_detect(), this_cpu is
not yet set, so we have to use the cpu_devs[] array directly.

This patch is part of the Linux Tiny project, and is needed for
further patch that will allow to disable compilation of unused CPU
support code.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
Glauber Costa
bc7c314d70 x86, vsmp: use the paravirt helpers
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
Glauber Costa
96597fd2be x86: introduce vsmp paravirt helpers
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
Glauber Costa
2785c8d052 x86: call vsmp_init explicitly
It becomes to early for ioremap, so we use early_ioremap

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
Glauber Costa
a2beab31b1 x86: make vsmp_init void, instead of static int
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
Glauber Costa
270883a8b9 x86: change vsmp compile dependency
Change Makefile so vsmp_64.o object is dependent
on PARAVIRT, rather than X86_VSMP

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
Robert Richter
e319e76521 x86: apic: extended interrupt LVT support for AMD
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:47 +02:00
Harvey Harrison
e0bf0f75bd x86: define DEBUG_SIG in signal_64.c
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 17:40:46 +02:00