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Commit 5b9f9569 authored by Vincent Chen's avatar Vincent Chen Committed by Greentime Hu
Browse files

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: default avatarVincent Chen <vincentc@andestech.com>
Reviewed-by: default avatarGreentime Hu <greentime@andestech.com>
Signed-off-by: default avatarGreentime Hu <greentime@andestech.com>
parent efcc4ea8

arch/nds32/mm/cacheflush.c

+7 −2
Original line number Diff line number Diff line
@@ -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);

}