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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-12-18 17:43:57 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-02-20 17:42:51 +0100
commitae1402022edbeef3991f1e4bae8fa99558be291b (patch)
tree92d0c34f87ca4174a17d8fae1ac6bcdcd032fddc /arch/arm/mm/fault-armv.c
parentMM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself (diff)
downloadlinux-ae1402022edbeef3991f1e4bae8fa99558be291b.tar.xz
linux-ae1402022edbeef3991f1e4bae8fa99558be291b.zip
ARM: make_coherent(): fix problems with highpte, part 2
update_mmu_cache() is called with the page table for the faulted-in page still mapped. We need to modify the PTE for this page to ensure coherency with other shared mappings when multiple shared mappings exist within a MM. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/fault-armv.c')
-rw-r--r--arch/arm/mm/fault-armv.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c
index c45f9bb318ad..c9b97e9836a2 100644
--- a/arch/arm/mm/fault-armv.c
+++ b/arch/arm/mm/fault-armv.c
@@ -99,7 +99,8 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address,
}
static void
-make_coherent(struct address_space *mapping, struct vm_area_struct *vma, unsigned long addr, unsigned long pfn)
+make_coherent(struct address_space *mapping, struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep, unsigned long pfn)
{
struct mm_struct *mm = vma->vm_mm;
struct vm_area_struct *mpnt;
@@ -131,7 +132,7 @@ make_coherent(struct address_space *mapping, struct vm_area_struct *vma, unsigne
}
flush_dcache_mmap_unlock(mapping);
if (aliases)
- adjust_pte(vma, addr, pfn);
+ do_adjust_pte(vma, addr, pfn, ptep);
else
flush_cache_page(vma, addr, pfn);
}
@@ -174,7 +175,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr,
#endif
if (mapping) {
if (cache_is_vivt())
- make_coherent(mapping, vma, addr, pfn);
+ make_coherent(mapping, vma, addr, ptep, pfn);
else if (vma->vm_flags & VM_EXEC)
__flush_icache_all();
}