linux/arch
David Gibson 0895ecda79 powerpc/mm: Bring hugepage PTE accessor functions back into sync with normal accessors
The hugepage arch code provides a number of hook functions/macros
which mirror the functionality of various normal page pte access
functions.  Various changes in the normal page accessors (in
particular BenH's recent changes to the handling of lazy icache
flushing and PAGE_EXEC) have caused the hugepage versions to get out
of sync with the originals.  In some cases, this is a bug, at least on
some MMU types.

One of the reasons that some hooks were not identical to the normal
page versions, is that the fact we're dealing with a hugepage needed
to be passed down do use the correct dcache-icache flush function.
This patch makes the main flush_dcache_icache_page() function hugepage
aware (by checking for the PageCompound flag).  That in turn means we
can make set_huge_pte_at() just a call to set_pte_at() bringing it
back into sync.  As a bonus, this lets us remove the
hash_huge_page_do_lazy_icache() function, replacing it with a call to
the hash_page_do_lazy_icache() function it was based on.

Some other hugepage pte access hooks - huge_ptep_get_and_clear() and
huge_ptep_clear_flush() - are not so easily unified, but this patch at
least brings them back into sync with the current versions of the
corresponding normal page functions.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 17:21:23 +11:00
..
alpha alpha: Fix duplicate <asm/thread_info.h> include 2009-09-27 14:46:05 -07:00
arm Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2009-10-29 08:16:42 -07:00
avr32 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next 2009-09-23 15:37:02 -07:00
blackfin headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
cris const: constify remaining file_operations 2009-10-01 16:11:11 -07:00
frv frv: fix check on unsigned in do_signal() 2009-10-29 07:39:32 -07:00
h8300 h8300: Cleanup linker script using new linker script macros. 2009-09-24 17:16:22 -07:00
ia64 const: mark struct vm_struct_operations 2009-09-27 11:39:25 -07:00
m32r headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
m68k revert "m68k: convert to asm-generic/hardirq.h" 2009-10-01 16:11:11 -07:00
m68knommu m68knommu: fix rename of pt_regs offset defines breakage 2009-09-30 10:06:07 +10:00
microblaze microblaze: Clear sticky FSR register after saving it to func parametr 2009-10-05 11:37:47 +02:00
mips MIPS: Avoid spurious make includecheck message 2009-09-30 21:47:02 +02:00
mn10300 mn10300: fix kernel build failures when using gcc-4.x 2009-10-01 16:11:12 -07:00
parisc parisc: Fix linker script breakage. 2009-09-28 00:25:07 -04:00
powerpc powerpc/mm: Bring hugepage PTE accessor functions back into sync with normal accessors 2009-10-30 17:21:23 +11:00
s390 [S390] Add highgprs facility to /proc/cpuinfo 2009-10-14 12:43:53 +02:00
score Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next 2009-09-23 15:37:02 -07:00
sh sh: Fix hugetlbfs dependencies for SH-3 && MMU configurations. 2009-10-27 07:22:37 +09:00
sparc sparc64: Set IRQF_DISABLED on LDC channel IRQs. 2009-10-13 00:49:09 -07:00
um headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
x86 Merge branch 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen 2009-10-29 15:03:36 -07:00
xtensa headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
.gitignore
Kconfig oprofile: fix oprofile regression: select RING_BUFFER_ALLOW_SWAP 2009-09-17 15:53:42 -04:00