Russell King 4b3073e1c5 MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself ... On VIVT ARM, when we have multiple shared mappings of the same file in the same MM, we need to ensure that we have coherency across all copies. We do this via make_coherent() by making the pages uncacheable. This used to work fine, until we allowed highmem with highpte - we now have a page table which is mapped as required, and is not available for modification via update_mmu_cache(). Ralf Beache suggested getting rid of the PTE value passed to update_mmu_cache(): On MIPS update_mmu_cache() calls __update_tlb() which walks pagetables to construct a pointer to the pte again. Passing a pte_t * is much more elegant. Maybe we might even replace the pte argument with the pte_t? Ben Herrenschmidt would also like the pte pointer for PowerPC: Passing the ptep in there is exactly what I want. I want that -instead- of the PTE value, because I have issue on some ppc cases, for I$/D$ coherency, where set_pte_at() may decide to mask out the _PAGE_EXEC. So, pass in the mapped page table pointer into update_mmu_cache(), and remove the PTE value, updating all implementations and call sites to suit. Includes a fix from Stephen Rothwell: sparc: fix fallout from update_mmu_cache API change Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		2010-02-20 16:41:46 +00:00
..
alpha	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
arm	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
avr32	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
blackfin	blackfin,kgdb: Do not put PC in gdb_regs into retx.	2010-01-07 11:58:37 -06:00
cris	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
frv	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
h8300	Merge branch 'for-33' of git://repo.or.cz/linux-kbuild	2009-12-17 07:23:42 -08:00
ia64	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
m32r	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
m68k	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
m68knommu	m68knommu: fix invalid flags on coldfire pit clocksource	2010-01-16 12:15:38 -08:00
microblaze	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
mips	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
mn10300	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
parisc	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
powerpc	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
s390	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
score	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
sh	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
sparc	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
um	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
x86	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
xtensa	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	2010-02-20 16:41:46 +00:00
.gitignore
Kconfig	hw-breakpoints: Fix hardware breakpoints -> perf events dependency	2009-12-18 13:11:51 +01:00