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nds32: Flush the cache of the page at vmaddr instead of kaddr in flush_anon_page

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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>
This commit is contained in:
Vincent Chen 2018-05-14 16:56:53 +08:00 committed by Greentime Hu
parent efcc4ea872
commit 5b9f95699b
1 changed files with 7 additions and 2 deletions
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9
arch/nds32/mm/cacheflush.c
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@ -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, void flush_anon_page(struct vm_area_struct *vma,
struct page *page, unsigned long vaddr) struct page *page, unsigned long vaddr)
{ {
unsigned long flags; unsigned long kaddr, flags, ktmp;
if (!PageAnon(page)) if (!PageAnon(page))
return; return;
@ -284,7 +284,12 @@ void flush_anon_page(struct vm_area_struct *vma,
local_irq_save(flags); local_irq_save(flags);
if (vma->vm_flags & VM_EXEC) if (vma->vm_flags & VM_EXEC)
cpu_icache_inval_page(vaddr & PAGE_MASK); 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); local_irq_restore(flags);
} }