diff options
| author | Vincent Chen <vincentc@andestech.com> | 2018-05-14 10:56:53 +0200 |
|---|---|---|
| committer | Greentime Hu <greentime@andestech.com> | 2018-05-23 07:26:22 +0200 |
| commit | 5b9f95699b2166e06b7d7820c8173fdbff0ddf35 (patch) | |
| tree | 1694110e55a861e35815d22ab84cc91076498243 /arch/nds32/mm | |
| parent | nds32: Correct flush_dcache_page function (diff) | |
| download | linux-5b9f95699b2166e06b7d7820c8173fdbff0ddf35.tar.xz linux-5b9f95699b2166e06b7d7820c8173fdbff0ddf35.zip | |
nds32: Flush the cache of the page at vmaddr instead of kaddr in flush_anon_page
According to Documentation/cachetlb.txt, the cache of the page at vmaddr
shall be flushed in flush_anon_page instead of the cache of the page at
page_address(page).
Signed-off-by: Vincent Chen <vincentc@andestech.com>
Reviewed-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
Diffstat (limited to 'arch/nds32/mm')
| -rw-r--r-- | arch/nds32/mm/cacheflush.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/nds32/mm/cacheflush.c b/arch/nds32/mm/cacheflush.c index 02f25ee39c1d..ae31cd2c21be 100644 --- a/arch/nds32/mm/cacheflush.c +++ b/arch/nds32/mm/cacheflush.c @@ -274,7 +274,7 @@ void copy_from_user_page(struct vm_area_struct *vma, struct page *page, void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr) { - unsigned long flags; + unsigned long kaddr, flags, ktmp; if (!PageAnon(page)) return; @@ -284,7 +284,12 @@ void flush_anon_page(struct vm_area_struct *vma, local_irq_save(flags); if (vma->vm_flags & VM_EXEC) cpu_icache_inval_page(vaddr & PAGE_MASK); - cpu_dcache_wbinval_page((unsigned long)page_address(page)); + kaddr = (unsigned long)page_address(page); + if (aliasing(vaddr, kaddr)) { + ktmp = kremap0(vaddr, page_to_phys(page)); + cpu_dcache_wbinval_page(ktmp); + kunmap01(ktmp); + } local_irq_restore(flags); } |