Messages in this thread Patch in this message | | | From | Benjamin Herrenschmidt <> | Date | Tue, 07 Aug 2007 17:19:46 +1000 | Subject | [RFC/PATCH 1/12] remove frv usage of flush_tlb_pgtables() |
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frv is the last user in the tree of that dubious hook, and it's my understanding that it's not even needed. It's only called by memory.c free_pgd_range() which is always called within an mmu_gather, and tlb_flush() on frv will do a flush_tlb_mm(), which from my reading of the code, seems to do what flush_tlb_ptables() does, which is to clear the cached PGE.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> ---
include/asm-frv/tlbflush.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
Index: linux-work/include/asm-frv/tlbflush.h =================================================================== --- linux-work.orig/include/asm-frv/tlbflush.h 2007-07-27 09:40:38.000000000 +1000 +++ linux-work/include/asm-frv/tlbflush.h 2007-07-27 09:43:17.000000000 +1000 @@ -57,8 +57,7 @@ do { \ #define __flush_tlb_global() flush_tlb_all() #define flush_tlb() flush_tlb_all() #define flush_tlb_kernel_range(start, end) flush_tlb_all() -#define flush_tlb_pgtables(mm,start,end) \ - asm volatile("movgs %0,scr0 ! movgs %0,scr1" :: "r"(ULONG_MAX) : "memory"); +#define flush_tlb_pgtables(mm,start,end) do { } while(0) #else - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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