diff options
Diffstat (limited to 'kernel/arch/mips/mm')
| -rw-r--r-- | kernel/arch/mips/mm/cache.c | 41 | ||||
| -rw-r--r-- | kernel/arch/mips/mm/uasm-mips.c | 2 |
2 files changed, 22 insertions, 21 deletions
diff --git a/kernel/arch/mips/mm/cache.c b/kernel/arch/mips/mm/cache.c index aab218c36..e87bccd6e 100644 --- a/kernel/arch/mips/mm/cache.c +++ b/kernel/arch/mips/mm/cache.c @@ -16,6 +16,7 @@ #include <linux/mm.h> #include <asm/cacheflush.h> +#include <asm/highmem.h> #include <asm/processor.h> #include <asm/cpu.h> #include <asm/cpu-features.h> @@ -83,8 +84,6 @@ void __flush_dcache_page(struct page *page) struct address_space *mapping = page_mapping(page); unsigned long addr; - if (PageHighMem(page)) - return; if (mapping && !mapping_mapped(mapping)) { SetPageDcacheDirty(page); return; @@ -95,8 +94,15 @@ void __flush_dcache_page(struct page *page) * case is for exec env/arg pages and those are %99 certainly going to * get faulted into the tlb (and thus flushed) anyways. */ - addr = (unsigned long) page_address(page); + if (PageHighMem(page)) + addr = (unsigned long)kmap_atomic(page); + else + addr = (unsigned long)page_address(page); + flush_data_cache_page(addr); + + if (PageHighMem(page)) + __kunmap_atomic((void *)addr); } EXPORT_SYMBOL(__flush_dcache_page); @@ -119,33 +125,28 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr) EXPORT_SYMBOL(__flush_anon_page); -void __flush_icache_page(struct vm_area_struct *vma, struct page *page) -{ - unsigned long addr; - - if (PageHighMem(page)) - return; - - addr = (unsigned long) page_address(page); - flush_data_cache_page(addr); -} -EXPORT_SYMBOL_GPL(__flush_icache_page); - -void __update_cache(struct vm_area_struct *vma, unsigned long address, - pte_t pte) +void __update_cache(unsigned long address, pte_t pte) { struct page *page; unsigned long pfn, addr; - int exec = (vma->vm_flags & VM_EXEC) && !cpu_has_ic_fills_f_dc; + int exec = !pte_no_exec(pte) && !cpu_has_ic_fills_f_dc; pfn = pte_pfn(pte); if (unlikely(!pfn_valid(pfn))) return; page = pfn_to_page(pfn); - if (page_mapping(page) && Page_dcache_dirty(page)) { - addr = (unsigned long) page_address(page); + if (Page_dcache_dirty(page)) { + if (PageHighMem(page)) + addr = (unsigned long)kmap_atomic(page); + else + addr = (unsigned long)page_address(page); + if (exec || pages_do_alias(addr, address & PAGE_MASK)) flush_data_cache_page(addr); + + if (PageHighMem(page)) + __kunmap_atomic((void *)addr); + ClearPageDcacheDirty(page); } } diff --git a/kernel/arch/mips/mm/uasm-mips.c b/kernel/arch/mips/mm/uasm-mips.c index b4a837893..5abe51cad 100644 --- a/kernel/arch/mips/mm/uasm-mips.c +++ b/kernel/arch/mips/mm/uasm-mips.c @@ -65,7 +65,7 @@ static struct insn insn_table[] = { #ifndef CONFIG_CPU_MIPSR6 { insn_cache, M(cache_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, #else - { insn_cache, M6(cache_op, 0, 0, 0, cache6_op), RS | RT | SIMM9 }, + { insn_cache, M6(spec3_op, 0, 0, 0, cache6_op), RS | RT | SIMM9 }, #endif { insn_daddiu, M(daddiu_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, { insn_daddu, M(spec_op, 0, 0, 0, 0, daddu_op), RS | RT | RD }, |