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authorCatalin Marinas <catalin.marinas@arm.com>2008-06-13 10:28:36 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-07-03 16:39:57 +0100
commit826cbdaff29764bb6928c715c6a025e49469dda9 (patch)
tree0fa040b3be05d88291eb5dca05f77202ad56ab45 /arch/arm/mm
parent43df5220e455d426ec7462d0bf906e686c65ebb5 (diff)
downloadop-kernel-dev-826cbdaff29764bb6928c715c6a025e49469dda9.zip
op-kernel-dev-826cbdaff29764bb6928c715c6a025e49469dda9.tar.gz
[ARM] 5092/1: Fix the I-cache invalidation on ARMv6 and later CPUs
This patch adds the I-cache invalidation in update_mmu_cache if the corresponding vma is marked as executable. It also invalidates the I-cache if a thread migrates to a CPU it never ran on. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/fault-armv.c4
-rw-r--r--arch/arm/mm/flush.c2
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c
index 44558d5..fbfa260 100644
--- a/arch/arm/mm/fault-armv.c
+++ b/arch/arm/mm/fault-armv.c
@@ -144,13 +144,17 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, pte_t pte)
page = pfn_to_page(pfn);
mapping = page_mapping(page);
if (mapping) {
+#ifndef CONFIG_SMP
int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags);
if (dirty)
__flush_dcache_page(mapping, page);
+#endif
if (cache_is_vivt())
make_coherent(mapping, vma, addr, pfn);
+ else if (vma->vm_flags & VM_EXEC)
+ __flush_icache_all();
}
}
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index 9df507d..029ee65 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -199,6 +199,8 @@ void flush_dcache_page(struct page *page)
__flush_dcache_page(mapping, page);
if (mapping && cache_is_vivt())
__flush_dcache_aliases(mapping, page);
+ else if (mapping)
+ __flush_icache_all();
}
}
EXPORT_SYMBOL(flush_dcache_page);
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