Messages in this thread | | | From | David Howells <> | Subject | Re: [RFC PATCH] Remove flush_icache_user_range() | Date | Fri, 11 Apr 2014 09:53:08 +0100 |
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Russell King - ARM Linux <linux@arm.linux.org.uk> wrote:
> --- a/arch/frv/include/asm/cacheflush.h > +++ b/arch/frv/include/asm/cacheflush.h > @@ -95,7 +95,9 @@ static inline void flush_icache_page(struct vm_area_struct *vma, struct page *pa > */ > #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ > do { \ > + unsigned long _vaddr = vaddr; \ > memcpy((dst), (src), (len)); \ > + frv_cache_wback_inv(_vaddr, _vaddr + (len)); \ > flush_icache_user_range((vma), (page), (vaddr), (len)); \ > } while(0)
FRV's flush_icache_user_range() does frv_cache_wback_inv().
If we can guarantee that vaddr is always mapped to the page, I should be able to get rid of the kmap_atomic bits in flush_icache_user_range().
David
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