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Subject[PATCH 2/3] nds32: Flush the cache of the page at vmaddr instead of kaddr in flush_anon_page
Date
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>
---
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 288cf10..acfdb45 100644
--- a/arch/nds32/mm/cacheflush.c
+++ b/arch/nds32/mm/cacheflush.c
@@ -254,7 +254,7 @@ 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;

@@ -264,7 +264,12 @@ 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);
}

--
1.7.1
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