Suresh Siddha 1adcaafe74 x86, pat: Allow ISA memory range uncacheable mapping requests ... Max Vozeler reported: > Bug 13877 - bogl-term broken with CONFIG_X86_PAT=y, works with =n > > strace of bogl-term: > 814 mmap2(NULL, 65536, PROT_READ|PROT_WRITE, MAP_SHARED, 4, 0) > = -1 EAGAIN (Resource temporarily unavailable) > 814 write(2, "bogl: mmaping /dev/fb0: Resource temporarily unavailable\n", > 57) = 57 PAT code maps the ISA memory range as WB in the PAT attribute, so that fixed range MTRR registers define the actual memory type (UC/WC/WT etc). But the upper level is_new_memtype_allowed() API checks are failing, as the request here is for UC and the return tracked type is WB (Tracked type is WB as MTRR type for this legacy range potentially will be different for each 4k page). Fix is_new_memtype_allowed() by always succeeding the ISA address range checks, as the null PAT (WB) and def MTRR fixed range register settings satisfy the memory type needs of the applications that map the ISA address range. Reported-and-Tested-by: Max Vozeler <xam@debian.org> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>		2009-08-17 14:12:44 -07:00
..
uv	x86: Fix UV BAU destination subnode id	2009-08-15 11:58:02 +02:00
visws
xen
a.out-core.h
a.out.h
acpi.h	ACPI: #define acpi_disabled 1 for CONFIG_ACPI=n	2009-06-12 20:50:39 -04:00
aes.h
agp.h
alternative-asm.h
alternative.h
amd_iommu_types.h
amd_iommu.h	amd-iommu: disable IOMMU hardware on shutdown	2009-06-15 15:20:40 +02:00
apic.h	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-06-10 16:15:14 -07:00
apicdef.h
apicnum.h
apm.h
asm.h
atomic_32.h	x86: atomic64: Inline atomic64_read() again	2009-07-04 11:45:00 +02:00
atomic_64.h	x86: atomic64: Code atomic(64)_read and atomic(64)_set in C not CPP	2009-07-03 14:42:39 +02:00
atomic.h
auxvec.h
bios_ebda.h
bitops.h
bitsperlong.h	asm-generic: introduce asm/bitsperlong.h	2009-06-11 21:02:14 +02:00
boot.h	x86, setup: correct include file in <asm/boot.h>	2009-06-25 15:16:06 -07:00
bootparam.h
bug.h
bugs.h
byteorder.h
cache.h
cacheflush.h
calgary.h
calling.h
checksum_32.h
checksum_64.h
checksum.h
cmpxchg_32.h
cmpxchg_64.h
cmpxchg.h
compat.h
cpu_debug.h
cpu.h
cpufeature.h	Merge branch 'kvm-updates/2.6.31' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2009-06-11 10:03:30 -07:00
cpumask.h
cputime.h
current.h
debugreg.h
delay.h
desc_defs.h
desc.h	x86: de-assembler-ize asm/desc.h	2009-06-17 21:35:10 -07:00
device.h
div64.h
dma-mapping.h	dma-mapping: x86: use asm-generic/dma-mapping-common.h	2009-06-18 13:03:58 -07:00
dma.h
dmi.h
do_timer.h
ds.h
dwarf2.h
e820.h
edac.h
efi.h	x86: Make 64-bit efi_ioremap use ioremap on MMIO regions	2009-08-03 13:34:25 -07:00
elf.h
emergency-restart.h
entry_arch.h	Merge branch 'linus' into x86/mce3	2009-06-11 23:31:52 +02:00
errno.h
fb.h
fcntl.h
fixmap.h	x86: Fix fixmap page order for FIX_TEXT_POKE0,1	2009-07-03 14:34:09 +02:00
floppy.h
frame.h
ftrace.h
futex.h
gart.h
genapic.h
geode.h
gpio.h
hardirq.h	Merge branch 'linus' into x86/mce3	2009-06-11 23:31:52 +02:00
highmem.h
hpet.h
hugetlb.h
hw_irq.h	Merge branch 'linus' into x86/mce3	2009-06-11 23:31:52 +02:00
hypertransport.h
hypervisor.h
i387.h	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-06-10 16:15:14 -07:00
i8253.h
i8259.h
ia32_unistd.h
ia32.h
idle.h
init.h
io_32.h
io_64.h
io_apic.h	x86/pci: insert ioapic resource before assigning unassigned resources	2009-07-10 13:03:14 -07:00
io.h
ioctl.h
ioctls.h
iomap.h
iommu.h
ipcbuf.h
ipi.h
irq_regs.h
irq_remapping.h
irq_vectors.h	Merge branch 'linus' into x86/mce3	2009-06-11 23:31:52 +02:00
irq.h
irqflags.h	x86: fix assembly constraints in native_save_fl()	2009-08-03 16:36:17 -07:00
ist.h
k8.h
Kbuild
kdebug.h
kexec.h
kgdb.h
kmap_types.h	kmap_types: make most arches use generic header file	2009-06-16 19:47:51 -07:00
kmemcheck.h	kmemcheck: add the kmemcheck core	2009-06-13 15:37:30 +02:00
kprobes.h
kvm_host.h
kvm_para.h
kvm_x86_emulate.h
kvm.h
ldt.h
lguest_hcall.h	lguest: update commentry	2009-07-30 16:03:46 +09:30
lguest.h	lguest: fix comment style	2009-07-30 16:03:45 +09:30
linkage.h
local.h
mach_timer.h
mach_traps.h
math_emu.h
mc146818rtc.h
mca_dma.h
mca.h
mce.h	x86, mce: mce.h cleanup	2009-06-16 16:56:10 -07:00
microcode.h
mman.h	asm-generic: rename termios.h, signal.h and mman.h	2009-06-11 21:01:52 +02:00
mmconfig.h
mmu_context.h
mmu.h
mmx.h
mmzone_32.h
mmzone_64.h
mmzone.h
module.h
mpspec_def.h
mpspec.h
msgbuf.h
msidef.h
msr-index.h	x86: Remove double declaration of MSR_P6_EVNTSEL0 and MSR_P6_EVNTSEL1	2009-07-01 15:23:43 +02:00
msr.h	x86: msr.h linux/types.h is only required for __KERNEL__	2009-06-17 18:56:01 +02:00
mtrr.h
mutex_32.h
mutex_64.h
mutex.h
nmi.h	x86: Remove unused function lapic_watchdog_ok()	2009-07-03 14:34:31 +02:00
nops.h
numa_32.h
numa_64.h
numa.h
numaq.h
olpc.h
page_32_types.h
page_32.h
page_64_types.h	x86, 64-bit: Clean up user address masking	2009-06-20 15:40:00 -07:00
page_64.h
page_types.h
page.h	asm-generic: rename page.h and uaccess.h	2009-06-11 21:02:17 +02:00
param.h
paravirt.h	Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-06-10 16:16:27 -07:00
parport.h
pat.h
pci_64.h
pci_x86.h	Revert "PCI: use ACPI _CRS data by default"	2009-06-24 16:23:03 -07:00
pci-direct.h
pci-functions.h
pci.h	Fix pci_unmap_addr() et al on i386.	2009-07-01 11:19:29 -07:00
percpu.h	x86: fix pageattr handling for lpage percpu allocator and re-enable it	2009-06-22 11:56:24 +09:00
perf_counter.h	perf_counter, x86: Add mmap counter read support	2009-06-25 21:39:06 +02:00
pgalloc.h	mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()	2009-07-27 12:10:38 -07:00
pgtable_32_types.h	module: merge module_alloc() finally	2009-06-12 21:47:03 +09:30
pgtable_32.h	x86: Add NMI types for kmap_atomic, fix	2009-06-15 17:20:03 +02:00
pgtable_64_types.h
pgtable_64.h	x86, 64-bit: Clean up user address masking	2009-06-20 15:40:00 -07:00
pgtable_types.h	x86: make _PAGE_HIDDEN conditional	2009-06-15 15:49:19 +02:00
pgtable-2level_types.h
pgtable-2level.h
pgtable-3level_types.h
pgtable-3level.h
pgtable.h	x86, pat: Allow ISA memory range uncacheable mapping requests	2009-08-17 14:12:44 -07:00
poll.h
posix_types_32.h
posix_types_64.h
posix_types.h
prctl.h
processor-cyrix.h
processor-flags.h
processor.h	Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-06-10 19:53:40 -07:00
proto.h	x86: fix power-of-2 round_up/round_down macros	2009-07-02 12:05:10 -07:00
ptrace-abi.h
ptrace.h	Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-06-10 19:53:40 -07:00
pvclock-abi.h
pvclock.h
rdc321x_defs.h
reboot_fixups.h
reboot.h
required-features.h
resource.h
resume-trace.h
rio.h
rtc.h
rwlock.h
rwsem.h
scatterlist.h
seccomp_32.h
seccomp_64.h
seccomp.h
sections.h
segment.h
sembuf.h
serial.h
setup_arch.h
setup.h
shmbuf.h
shmparam.h
sigcontext32.h
sigcontext.h
sigframe.h
siginfo.h
signal.h	asm-generic: rename termios.h, signal.h and mman.h	2009-06-11 21:01:52 +02:00
smp.h
smpboot_hooks.h
socket.h
sockios.h
sparsemem.h
spinlock_types.h
spinlock.h	memory barrier: adding smp_mb__after_lock	2009-07-09 17:06:58 -07:00
srat.h
stackprotector.h
stacktrace.h	perf_counter: Ignore the nmi call frames in the x86-64 backtraces	2009-07-01 22:37:23 +02:00
stat.h
statfs.h
string_32.h	x86: add hooks for kmemcheck	2009-06-15 12:40:02 +02:00
string_64.h	x86: add hooks for kmemcheck	2009-06-15 12:40:02 +02:00
string.h
suspend_32.h
suspend_64.h
suspend.h
svm.h
swab.h
swiotlb.h
sync_bitops.h
sys_ia32.h
syscall.h
syscalls.h
system_64.h
system.h
tce.h
termbits.h
termios.h	x86: fix ktermios-termio conversion	2009-06-11 08:50:59 -07:00
thread_info.h	sched: INIT_PREEMPT_COUNT	2009-07-10 14:24:05 -07:00
time.h
timer.h	sched, x86: Fix cpufreq + sched_clock() TSC scaling	2009-06-17 16:03:54 +02:00
timex.h	time: move PIT_TICK_RATE to linux/timex.h	2009-06-16 19:47:27 -07:00
tlb.h
tlbflush.h	x86: make zap_low_mapping could be used early	2009-06-12 13:50:24 +03:00
topology.h
trampoline.h
traps.h	Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-06-10 16:16:27 -07:00
tsc.h
types.h	asm-generic: introduce asm/bitsperlong.h	2009-06-11 21:02:14 +02:00
uaccess_32.h
uaccess_64.h	x86: Fix movq immediate operand constraints in uaccess_64.h	2009-07-20 20:46:17 -07:00
uaccess.h	x86: Fix movq immediate operand constraints in uaccess.h	2009-07-20 23:27:39 -07:00
ucontext.h
unaligned.h
unistd_32.h
unistd_64.h
unistd.h
user32.h
user_32.h
user_64.h
user.h
vdso.h
vga.h
vgtod.h
virtext.h
vm86.h
vmi_time.h
vmi.h
vmware.h
vmx.h
vsyscall.h
xcr.h
xor_32.h
xor_64.h
xor.h	x86: add hooks for kmemcheck	2009-06-15 12:40:02 +02:00
xsave.h