aboutsummaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/sh/mm/tlb-sh3.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/arch/sh/mm/tlb-sh3.c b/arch/sh/mm/tlb-sh3.c
index 7a0d5c10bf2..46b09e26e08 100644
--- a/arch/sh/mm/tlb-sh3.c
+++ b/arch/sh/mm/tlb-sh3.c
@@ -40,12 +40,17 @@ void update_mmu_cache(struct vm_area_struct * vma,
return;
#if defined(CONFIG_SH7705_CACHE_32KB)
- struct page *page;
- page = pte_page(pte);
- if (VALID_PAGE(page) && !test_bit(PG_mapped, &page->flags)) {
- unsigned long phys = pte_val(pte) & PTE_PHYS_MASK;
- __flush_wback_region((void *)P1SEGADDR(phys), PAGE_SIZE);
- __set_bit(PG_mapped, &page->flags);
+ {
+ struct page *page = pte_page(pte);
+ unsigned long pfn = pte_pfn(pte);
+
+ if (pfn_valid(pfn) && !test_bit(PG_mapped, &page->flags)) {
+ unsigned long phys = pte_val(pte) & PTE_PHYS_MASK;
+
+ __flush_wback_region((void *)P1SEGADDR(phys),
+ PAGE_SIZE);
+ __set_bit(PG_mapped, &page->flags);
+ }
}
#endif
@@ -80,7 +85,7 @@ void __flush_tlb_page(unsigned long asid, unsigned long page)
*/
addr = MMU_TLB_ADDRESS_ARRAY | (page & 0x1F000);
data = (page & 0xfffe0000) | asid; /* VALID bit is off */
-
+
if ((cpu_data->flags & CPU_HAS_MMU_PAGE_ASSOC)) {
addr |= MMU_PAGE_ASSOC_BIT;
ways = 1; /* we already know the way .. */