Zhang, Yanmin 8f860591ff [PATCH] Enable mprotect on huge pages ... 2.6.16-rc3 uses hugetlb on-demand paging, but it doesn_t support hugetlb mprotect. From: David Gibson <david@gibson.dropbear.id.au> Remove a test from the mprotect() path which checks that the mprotect()ed range on a hugepage VMA is hugepage aligned (yes, really, the sense of is_aligned_hugepage_range() is the opposite of what you'd guess :-/). In fact, we don't need this test. If the given addresses match the beginning/end of a hugepage VMA they must already be suitably aligned. If they don't, then mprotect_fixup() will attempt to split the VMA. The very first test in split_vma() will check for a badly aligned address on a hugepage VMA and return -EINVAL if necessary. From: "Chen, Kenneth W" <kenneth.w.chen@intel.com> On i386 and x86-64, pte flag _PAGE_PSE collides with _PAGE_PROTNONE. The identify of hugetlb pte is lost when changing page protection via mprotect. A page fault occurs later will trigger a bug check in huge_pte_alloc(). The fix is to always make new pte a hugetlb pte and also to clean up legacy code where _PAGE_PRESENT is forced on in the pre-faulting day. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-03-22 07:54:03 -08:00
..
sn	Pull sn2-reduce-kmalloc-wrap into release branch	2006-03-21 08:22:56 -08:00
a.out.h
acpi-ext.h	[ACPI] fix IA64 build warning	2005-08-04 22:29:34 -04:00
acpi.h	[IA64] Count disabled cpus as potential hot-pluggable CPUs	2006-02-14 15:37:58 -08:00
agp.h
asmmacro.h
atomic.h	[PATCH] mutex subsystem, add atomic_xchg() to all arches	2006-01-09 15:59:17 -08:00
auxvec.h	[PATCH] auxiliary vector cleanups	2005-09-07 16:57:21 -07:00
bitops.h	[FLS64]: generic version	2006-01-03 13:11:06 -08:00
break.h	[PATCH] Kprobes/IA64: kdebug die notification mechanism	2005-06-23 09:45:22 -07:00
bug.h	[PATCH] remove gcc-2 checks	2006-01-08 20:14:02 -08:00
bugs.h
byteorder.h
cache.h	[PATCH] Kill L1_CACHE_SHIFT_MAX	2006-01-08 20:13:39 -08:00
cacheflush.h
checksum.h
compat.h	[PATCH] ia64: task_pt_regs()	2006-01-12 09:08:58 -08:00
cpu.h
cputime.h
current.h
cyclone.h
delay.h	[IA64] disable preemption in udelay()	2005-12-16 10:00:24 -08:00
div64.h
dma-mapping.h	[PATCH] ia64: re-implement dma_get_cache_alignment to avoid EXPORT_SYMBOL	2005-11-07 07:53:23 -08:00
dma.h
elf.h	[PATCH] auxiliary vector cleanups	2005-09-07 16:57:21 -07:00
emergency-restart.h	[PATCH] Add emergency_restart()	2005-07-26 14:35:41 -07:00
errno.h
fcntl.h	[PATCH] Clean up struct flock definitions	2005-09-07 16:57:38 -07:00
fpswa.h
fpu.h
futex.h	[PATCH] consolidate asm/futex.h	2006-01-08 20:13:39 -08:00
gcc_intrin.h
hardirq.h
hw_irq.h	[PATCH] x86/x86_64: deferred handling of writes to /proc/irqxx/smp_affinity	2005-09-07 16:57:15 -07:00
ia32.h	[IA64] Change SET_PERSONALITY to comply with comment in binfmt_elf.c.	2005-12-06 09:12:34 -08:00
ia64regs.h
ide.h	[PATCH] ia64: drop arch-specific IDE MAX_HWIFS definition	2006-02-03 08:32:11 -08:00
intel_intrin.h	[IA64] use icc defined constant	2006-02-07 08:49:27 -08:00
intrinsics.h
io.h	[PATCH] /dev/mem: validate mmap requests	2006-01-08 20:14:02 -08:00
ioctl.h	[PATCH] Generic ioctl.h	2006-01-10 08:01:34 -08:00
ioctls.h
iosapic.h	[IA64] Minor cleanups - remove unnecessary function prototype in iosapic.h	2005-09-07 14:00:40 -07:00
ipcbuf.h
irq.h	[IA64] Manual merge fix for 3 files	2005-09-08 14:27:13 -07:00
kdebug.h	[IA64] Extend notify_die() hooks for IA64	2005-11-07 11:27:13 -08:00
kmap_types.h
kprobes.h	[IA64] prevent accidental modification of args in jprobe handler	2006-01-13 14:45:21 -08:00
kregs.h
linkage.h
local.h	[IA64] Fix missing parameter for local_add/sub	2005-12-07 11:30:11 -08:00
machvec_dig.h
machvec_hpsim.h
machvec_hpzx1_swiotlb.h	[IA64] more robust zx1/sx1000 machvec support	2005-09-14 16:22:11 -07:00
machvec_hpzx1.h	[IA64] more robust zx1/sx1000 machvec support	2005-09-14 16:22:11 -07:00
machvec_init.h
machvec_sn2.h	Pull sn2-mmio-writes into release branch	2006-03-21 08:21:26 -08:00
machvec.h	[IA64] hooks to wait for mmio writes to drain when migrating processes	2006-01-26 15:55:52 -08:00
mc146818rtc.h
mca_asm.h	[PATCH] MCA/INIT: use per cpu stacks	2005-09-11 14:08:41 -07:00
mca.h	[IA64] support for cpu0 removal	2006-01-05 10:24:20 -08:00
meminit.h	Pull sparsemem-v5 into release branch	2005-10-28 14:32:56 -07:00
mman.h	[PATCH] add asm-generic/mman.h	2006-02-15 15:32:22 -08:00
mmu_context.h	[IA64] make mmu_context.h and tlb.c 80-column friendly	2005-11-03 14:43:50 -08:00
mmu.h	[IA64] Fix race in mm-context wrap-around logic.	2005-08-12 15:05:21 -07:00
mmzone.h	[PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM	2005-10-04 13:21:13 -07:00
module.h
msgbuf.h
msi.h	[PATCH] PCI: Change MSI to use physical delivery mode always	2005-11-10 16:09:18 -08:00
mutex.h	[IA64] implement ia64 specific mutex primitives	2006-01-26 13:10:19 -08:00
namei.h
nodedata.h	[PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM	2005-10-04 13:21:13 -07:00
numa.h
numnodes.h
page.h	[IA64] - Make pfn_valid more precise for SGI Altix systems	2005-11-29 09:24:10 -08:00
pal.h	[IA64] pal cache flush patch	2006-01-16 15:44:53 -08:00
param.h	[PATCH] ia64: Selectable Timer Interrupt Frequency	2005-06-23 09:45:10 -07:00
parport.h
patch.h
pci.h	[PATCH] Make sparc64 use setup-res.c	2005-09-08 14:57:25 -07:00
percpu.h	[PATCH] adjust per_cpu definition in non-SMP case	2005-06-23 09:45:28 -07:00
perfmon_default_smpl.h
perfmon.h
pgalloc.h	[IA64] 4-level page tables	2005-11-11 09:37:29 -08:00
pgtable.h	[PATCH] Enable mprotect on huge pages	2006-03-22 07:54:03 -08:00
poll.h
posix_types.h
processor.h	Pull sn2-mmio-writes into release branch	2006-03-21 08:21:26 -08:00
ptrace_offsets.h
ptrace.h	[PATCH] ia64: task_pt_regs()	2006-01-12 09:08:58 -08:00
resource.h
rse.h
rwsem.h	[PATCH] add sem_is_read/write_locked()	2005-10-29 21:40:35 -07:00
sal.h	[IA64] avoid broken SAL_CACHE_FLUSH implementations	2006-02-02 13:25:54 -08:00
scatterlist.h
sections.h	[PATCH] kprobes/ia64: refuse kprobe on ivt code	2005-06-27 15:23:54 -07:00
segment.h
semaphore.h	[IA64] Fix bug in ia64 specific down() function	2006-01-17 14:04:00 -08:00
sembuf.h
serial.h
setup.h
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h	[IA64] Delete MCA/INIT sigdelayed code	2006-01-26 13:23:27 -08:00
smp.h	[PATCH] smp_processor_id() cleanup	2005-06-21 18:46:13 -07:00
socket.h	[NET]: Introduce SO_{SND,RCV}BUFFORCE socket options	2005-08-29 15:31:35 -07:00
sockios.h
sparsemem.h	[PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM	2005-10-04 13:21:13 -07:00
spinlock_types.h	[PATCH] spinlock consolidation	2005-09-10 10:06:21 -07:00
spinlock.h	[PATCH] remove gcc-2 checks	2006-01-08 20:14:02 -08:00
stat.h
statfs.h
string.h
suspend.h
system.h	Pull sn2-mmio-writes into release branch	2006-03-21 08:21:26 -08:00
termbits.h
termios.h
thread_info.h	Pull sn2-mmio-writes into release branch	2006-03-21 08:21:26 -08:00
timex.h	[IA64] ia64: simplify and fix udelay()	2006-02-15 13:37:04 -08:00
tlb.h	[PATCH] mm: tlb_finish_mmu forget rss	2005-10-29 21:40:37 -07:00
tlbflush.h	[IA64] Use bitmaps for efficient context allocation/free	2005-10-31 14:36:05 -08:00
topology.h	[PATCH] Export cpu topology in sysfs	2006-02-03 08:32:09 -08:00
types.h	[PATCH] sab: consolidate kmem_bufctl_t	2005-09-05 00:05:48 -07:00
uaccess.h	[PATCH] ia64 basic __user annotations	2005-09-29 08:46:27 -07:00
ucontext.h
unaligned.h
uncached.h	[PATCH] ia64 uncached alloc	2005-06-21 18:46:18 -07:00
unistd.h	[IA64] unshare system call registration for ia64	2006-02-08 15:43:38 -08:00
unwind.h	[IA64] MCA/INIT: remove obsolete unwind code	2005-09-11 14:09:34 -07:00
user.h
ustack.h
vga.h	[IA64-SGI] pcdp: add PCDP pci interface support	2005-06-28 09:09:06 -07:00
xor.h