Commit Graph

24235 Commits

Author SHA1 Message Date
Eric Sesterhenn
5bcb28b139 BUG_ON() Conversion in mm/memory.c
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:30:52 +02:00
Eric Sesterhenn
910dea7fdd BUG_ON() Conversion in kernel/fork.c
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:29:26 +02:00
Eric Sesterhenn
27315c96a4 BUG_ON() Conversion in ipc/sem.c
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:28:38 +02:00
Eric Sesterhenn
309be53da6 BUG_ON() Conversion in fs/ext2/
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:27:41 +02:00
Eric Sesterhenn
4d4ef9abe3 BUG_ON() Conversion in fs/hfs/
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:26:51 +02:00
Eric Sesterhenn
28133c7b2b BUG_ON() Conversion in fs/dcache.c
this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:25:39 +02:00
Eric Sesterhenn
e827f92355 BUG_ON() Conversion in fs/buffer.c
this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:24:46 +02:00
Eric Sesterhenn
fddaaae16b BUG_ON() Conversion in input/serio/hp_sdc_mlc.c
this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:23:47 +02:00
Eric Sesterhenn
547bc92649 BUG_ON() Conversion in md/dm-table.c
this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:22:50 +02:00
Eric Sesterhenn
c163c7293e BUG_ON() Conversion in md/dm-path-selector.c
this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:21:58 +02:00
Eric Sesterhenn
6dd44a7446 BUG_ON() Conversion in drivers/isdn
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:19:26 +02:00
Eric Sesterhenn
56ee48277f BUG_ON() Conversion in drivers/char
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:17:21 +02:00
Eric Sesterhenn
373ebfbf17 BUG_ON() Conversion in drivers/mtd/
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-26 18:15:12 +02:00
Linus Torvalds
36ddf5bbde Merge master.kernel.org:/home/rmk/linux-2.6-serial
* master.kernel.org:/home/rmk/linux-2.6-serial:
  [ARM] 3383/3: ixp2000: ixdp2x01 platform serial conversion
  [SERIAL] amba-pl010: Remove accessor macros
  [SERIAL] remove 8250_acpi (replaced by 8250_pnp and PNPACPI)
  [SERIAL] icom: select FW_LOADER
2006-03-25 20:31:32 -08:00
Linus Torvalds
a41622eaa9 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 3030/2: fix permission check in the obscur cmpxchg syscall
  [ARM] nommu: rename compressed/head.S symbols to a new style
  [ARM] select TLS_REG_EMUL and NEEDS_SYSCALL_FOR_CMPXCHG
  [ARM] nommu: Move hardware page table definitions to pgtable-hwdef.h
  [ARM] Move read of processor ID out of lookup_processor_type()
  [ARM] Fix typo in tlbflush.h
  [ARM] noMMU: removes TLB codes in nommu mode
  [ARM] noMMU: block sys_fork in nommu mode
  [ARM] 3399/1: Fix link problem when CONFIG_PRINTK is disabled
  [ARM] 3398/1: Fix the VFP registers loading/storing base address
  [ARM] 3397/1: AT91RM9200 Header update
  [ARM] 3385/1: Battery support for sharp zaurus sl-5500 (collie)
  [ARM] SMP: don't set cpu_*_map in smp_prepare_boot_cpu
  include/linux/clk.h is betraying its ARM origins
  [ARM] Move enable_irq and disable_irq to assembler.h
  [ARM] 3391/1: use PLAT8250_DEV_PLATFORM{,1} for platform device id instead of 0/1
2006-03-25 20:29:54 -08:00
Andi Kleen
0b5c59a1e4 [PATCH] Fix compilation of processor_idle.c on IA64
Broken earlier by me by a x86-64 patch.

The code was optimized away, but the compiler still complained about an
undeclared function.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 20:19:29 -08:00
Lennert Buytenhek
104c7b03ea [ARM] 3383/3: ixp2000: ixdp2x01 platform serial conversion
Patch from Lennert Buytenhek

Add a PLAT8250_DEV_PLATFORM2, and convert the two ixdp2x01 CPLD serial
ports to use platform serial devices with ids PLAT8250_DEV_PLATFORM[12].
(The on-chip xscale UART is PLAT8250_DEV_PLATFORM, id #0.)

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 23:03:13 +00:00
Nicolas Pitre
2ce9804fbd [ARM] 3030/2: fix permission check in the obscur cmpxchg syscall
Patch from Nicolas Pitre

Quoting RMK:

|pte_write() just says that the page _may_ be writable. It doesn't say
|that the MMU is programmed to allow writes. If pte_dirty() doesn't
|return true, that means that the page is _not_ writable from userspace.
|If you write to it from kernel mode (without using put_user) you'll
|bypass the MMU read-only protection and may end up writing to a page
|owned by two separate processes.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 22:44:05 +00:00
Russell King
0003cedfc5 Merge nommu tree
Fix merge conflict in arch/arm/mm/proc-xscale.S

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 22:08:55 +00:00
Malcolm Parsons
3ee357f0f3 [ARM] 3399/1: Fix link problem when CONFIG_PRINTK is disabled
Patch from Malcolm Parsons

Printking a backtrace requires printk, so disable backtrace code
when printk is disabled.

Without this patch, a kernel with CONFIG_PRINTK disabled does not link:

arch/arm/lib/lib.a(backtrace.o): In function `c_backtrace':
arch/arm/lib/backtrace.S:(.text+0x108): undefined reference to `printk'
arch/arm/lib/backtrace.S:(.text+0x11c): undefined reference to `printk'
arch/arm/lib/lib.a(backtrace.o):(.fixup+0x8): undefined reference to `printk'

Signed-off-by: Malcolm Parsons <malcolm.parsons@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 21:58:03 +00:00
Catalin Marinas
80ed354725 [ARM] 3398/1: Fix the VFP registers loading/storing base address
Patch from Catalin Marinas

The current VFP code corrupts the VFP registers (including the control
ones) if more than one floating point application is executed at the same
time. This patch fixes the updating of the load/store base addresses for
the VFP registers.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 21:58:00 +00:00
Andrew Victor
1310eda4be [ARM] 3397/1: AT91RM9200 Header update
Patch from Andrew Victor

This patch updates the hardware header to include definitions for the
Memory Controller registers.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 21:57:59 +00:00
Pavel Machek
48a03ae863 [ARM] 3385/1: Battery support for sharp zaurus sl-5500 (collie)
Patch from Pavel Machek

This adds support for battery reading on collie. Collie slowly charges
battery even with charging disabled, so I did not yet enable fast
charge.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 21:57:57 +00:00
Russell King
091c539f08 [ARM] SMP: don't set cpu_*_map in smp_prepare_boot_cpu
The recent addition of boot_cpu_init() implements the initialisation
of the online, present and possible cpu maps for the boot CPU, so
there is no reason to duplicate this in the architecture
smp_prepare_boot_cpu() hook.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 21:37:29 +00:00
Russell King
98639a67a9 [SERIAL] amba-pl010: Remove accessor macros
Remove unnecessary accessor macros, using readb/writel directly
instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 21:30:11 +00:00
David S. Miller
7d3aee9a96 [SPARC64]: Keep cpu_present_map in sync with phys_cpu_present_map.
Don't rely on fixup_cpu_present_map() to do this as that function
is about to be removed.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-25 13:00:17 -08:00
Todd Poynor
686f8c5d77 include/linux/clk.h is betraying its ARM origins
include/linux/clk.h is betraying its ARM origins.

Signed-off-by: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 18:15:24 +00:00
Bjorn Helgaas
111c9bf8c5 [SERIAL] remove 8250_acpi (replaced by 8250_pnp and PNPACPI)
With the combination of PNPACPI and 8250_pnp, we no longer need 8250_acpi.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 17:49:47 +00:00
maximilian attems
cb2fc532d0 [SERIAL] icom: select FW_LOADER
The icom driver uses request_firmware()
and thus needs to select FW_LOADER.

Signed-off-by: maximilian attems <maks@sternwelten.at>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 17:44:20 +00:00
Linus Torvalds
3cbb90a9cb powerpc: fix strncasecmp prototype
It takes a size_t, not an int, as its third argument.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:41:40 -08:00
Linus Torvalds
1b9a391736 Merge branch 'audit.b3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current
* 'audit.b3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: (22 commits)
  [PATCH] fix audit_init failure path
  [PATCH] EXPORT_SYMBOL patch for audit_log, audit_log_start, audit_log_end and audit_format
  [PATCH] sem2mutex: audit_netlink_sem
  [PATCH] simplify audit_free() locking
  [PATCH] Fix audit operators
  [PATCH] promiscuous mode
  [PATCH] Add tty to syscall audit records
  [PATCH] add/remove rule update
  [PATCH] audit string fields interface + consumer
  [PATCH] SE Linux audit events
  [PATCH] Minor cosmetic cleanups to the code moved into auditfilter.c
  [PATCH] Fix audit record filtering with !CONFIG_AUDITSYSCALL
  [PATCH] Fix IA64 success/failure indication in syscall auditing.
  [PATCH] Miscellaneous bug and warning fixes
  [PATCH] Capture selinux subject/object context information.
  [PATCH] Exclude messages by message type
  [PATCH] Collect more inode information during syscall processing.
  [PATCH] Pass dentry, not just name, in fsnotify creation hooks.
  [PATCH] Define new range of userspace messages.
  [PATCH] Filter rule comparators
  ...

Fixed trivial conflict in security/selinux/hooks.c
2006-03-25 09:24:53 -08:00
Linus Torvalds
3661f00e20 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/aoe-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/aoe-2.6:
  [PATCH] aoe [3/3]: update version to 22
  [PATCH] aoe [2/3]: don't request ATA device ID on ATA error
  [PATCH] aoe [1/3]: support multiple AoE listeners
  [PATCH] aoe: do not stop retransmit timer when device goes down
  [PATCH] aoe [8/8]: update driver version number
  [PATCH] aoe [7/8]: update driver compatibility string
  [PATCH] aoe [6/8]: update device information on last close
  [PATCH] aoe [5/8]: allow network interface migration on packet retransmit
  [PATCH] aoe [4/8]: use less confusing driver name
  [PATCH] aoe [3/8]: increase allowed outstanding packets
  [PATCH] aoe [2/8]: support dynamic resizing of AoE devices
  [PATCH] aoe [1/8]: zero packet data after skb allocation
2006-03-25 09:20:39 -08:00
Linus Torvalds
53846a21c1 Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
* git://git.linux-nfs.org/pub/linux/nfs-2.6: (103 commits)
  SUNRPC,RPCSEC_GSS: spkm3--fix config dependencies
  SUNRPC,RPCSEC_GSS: spkm3: import contexts using NID_cast5_cbc
  LOCKD: Make nlmsvc_traverse_shares return void
  LOCKD: nlmsvc_traverse_blocks return is unused
  SUNRPC,RPCSEC_GSS: fix krb5 sequence numbers.
  NFSv4: Dont list system.nfs4_acl for filesystems that don't support it.
  SUNRPC,RPCSEC_GSS: remove unnecessary kmalloc of a checksum
  SUNRPC: Ensure rpc_call_async() always calls tk_ops->rpc_release()
  SUNRPC: Fix memory barriers for req->rq_received
  NFS: Fix a race in nfs_sync_inode()
  NFS: Clean up nfs_flush_list()
  NFS: Fix a race with PG_private and nfs_release_page()
  NFSv4: Ensure the callback daemon flushes signals
  SUNRPC: Fix a 'Busy inodes' error in rpc_pipefs
  NFS, NLM: Allow blocking locks to respect signals
  NFS: Make nfs_fhget() return appropriate error values
  NFSv4: Fix an oops in nfs4_fill_super
  lockd: blocks should hold a reference to the nlm_file
  NFSv4: SETCLIENTID_CONFIRM should handle NFS4ERR_DELAY/NFS4ERR_RESOURCE
  NFSv4: Send the delegation stateid for SETATTR calls
  ...
2006-03-25 09:18:27 -08:00
Linus Torvalds
2e9abdd9ba Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart
* master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart:
  [AGPGART] x86_64: Enable VIA AGP driver on x86-64 for VIA P4 chipsets
  [AGPGART] x86_64: Fix wrong PCI ID for ALI M1695 AGP bridge
  [AGPGART] ATI RS350 support.
  [AGPGART] Lots of CodingStyle/whitespace cleanups.
2006-03-25 09:17:32 -08:00
Andi Kleen
c36cd16f78 [PATCH] x86_64: Add cpu_relax() to busy loops in PM timer code
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:39 -08:00
Andi Kleen
6a0f03e0d3 [PATCH] x86_64: Don't enable CONFIG_UNWIND_INFO by default for DEBUG_KERNEL
DEBUG_KERNEL is often enabled just for sysrq, but this doesn't
mean the user wants more heavyweight debugging information.

Cc: jbeulich@novell.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:39 -08:00
Andi Kleen
f271a6f557 [PATCH] x86_64: Removed duplicated declaration of force_iommu
Noticed by Andrew Morton.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:39 -08:00
Andi Kleen
3076a492a5 [PATCH] x86_64: Report SIGSEGV for IRET faults
tcsh is not happy with the -9999 error code.

Suggested by Ernie Petrides

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:39 -08:00
Andi Kleen
ad90573f93 [PATCH] x86_64: Initialize powernow_data[] for all siblings
I got an oops on a dual core system because the lost tick handler
called cpufreq_get() on core 1 and powernow tried to follow
a NULL powernow_data[] pointer there.

Initialize powernow_data for all cores of a CPU.

Cc: Jacob Shin <jacob.shin@amd.com>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:39 -08:00
Andi Kleen
0085979006 [PATCH] x86_64: Remove bogus special case in AMD core parsing.
No need to restrict to power of two here.

TBD needs more double checking

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:39 -08:00
Eric Dumazet
dcf36bfa5d [PATCH] x86_64: group memnodemap and memnodeshift in a memnode structure
pfn_to_page() and others need to access both memnode_shift and the very
first bytes of memnodemap[]. If we force memnode_shift to be just before the
memnodemap array, we can reduce the memory footprint to one cache line
instead of two for most setups. This patch introduce a 'memnode' structure
where shift and map[] are carefully placed.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:38 -08:00
Kevin Winchester
40caa88465 [PATCH] x86_64: Eliminate register_die_notifier symbol exported
register_die_notifier is exported twice, once in traps.c and once in
x8664_ksyms.c.  This results in a warning on build.

Signed-off-by: Kevin Winchester <kwin@ns.sympatico.ca>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:38 -08:00
Navin Boppuri
9c01dda02f [PATCH] x86_64: Search K8 devices on more devices.
arch/x86_64/kernel/aperture.c: The search for the AGP bridge has been
extended to search for all the 256 buses instead of the first 32. This
is required since on a some systems, the bridge may be located on a bus
much farther than the first 32. By searching all 256 buses, we guarantee
that the search succeeds on such systems.

arch/x86_64/kernel/pci-gart.c: The search for the Northbridge is not
limited to just bus 0 anymore. This is required because on certain
systems, we may not find one on bus 0.

Signed-off-by: Navin Boppuri <navin.boppuri@newisys.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:38 -08:00
Andi Kleen
9494943619 [PATCH] x86_64: Make local_t 64bit instead of 32bit
For consistency with other architectures

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:38 -08:00
Jon Mason
5d05f4de41 [PATCH] x86_64: Make GART_IOMMU kconfig help text more specific (trivial)
Have the GART_IOMMU help text specify that this is the hardware IOMMU in
amd64 processors.  This will be significant if/when other IOMMUs are
added to the x86-64 architecture. :-)

Also, note that the previous help text stated that IOMMU was needed for
>3GB memory instead of >4GB.  This is fixed in the newer version.

Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:38 -08:00
Andi Kleen
ba22f13563 [PATCH] x86_64: Remove CONFIG_UNORDERED_IO
It was a failed experiment - all benchmarks done with it on both AMD
and Intel showed it was a loss. That was probably because the store
buffers of the CPUs for write combining traffic weren't large enough.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:38 -08:00
Andi Kleen
9d95dd849c [PATCH] i386/x86-64: List Intel LaGrange AKA SMX in /proc/cpuinfo
Spec just got published so we know the CPUID bit.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:10:57 -08:00
Jon Mason
c912c2db2f [PATCH] x86_64: free_bootmem_node needs __pa in allocate_aperture
free_bootmem_node expects a physical address to be passed in, but
__alloc_bootmem_node returns a virtual one.  That address needs to be
translated to physical.

Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:10:57 -08:00
Vivek Goyal
da7ed9f98f [PATCH] x86_64: timer interrupt lockup due to pending interrupt
o check_timer() routine fails while second kernel is booting after a crash
  on an opetron box. Problem happens because timer vector (0x31) seems to be
  locked.

o After a system crash, it is not safe to service interrupts any more, hence
  interrupts are disabled. This leads to pending interrupts at LAPIC. LAPIC
  sends these interrupts to the CPU during early boot of second kernel. Other
  pending interrupts are discarded saying unexpected trap but timer interrupt
  is serviced and CPU does not issue an LAPIC EOI because it think this
  interrupt came from i8259 and sends ack to 8259. This leads to vector 0x31
  locking as LAPIC does not clear respective ISR and keeps on waiting for
  EOI.

o This patch issues extra EOI for the pending interrupts who have ISR set.

o Though today only timer seems to be the special case because in early
  boot it thinks interrupts are coming from i8259 and uses
  mask_and_ack_8259A() as ack handler and does not issue LAPIC EOI. But
  probably doing it in generic manner for all vectors makes sense.

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:10:57 -08:00
Brian Gerst
b1fc513d81 [PATCH] x86_64: Use cpumask bitops for cpu_vm_mask
cpu_vm_mask is of type cpumask_t, so use the proper bitops.

Signed-off-by: Brian Gerst <bgerst@didntduck.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:10:56 -08:00