From 9e1b32caa525cb236e80e9c671e179bcecccc657 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 22 Jul 2009 15:44:28 +1000 Subject: mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() Upcoming paches to support the new 64-bit "BookE" powerpc architecture will need to have the virtual address corresponding to PTE page when freeing it, due to the way the HW table walker works. Basically, the TLB can be loaded with "large" pages that cover the whole virtual space (well, sort-of, half of it actually) represented by a PTE page, and which contain an "indirect" bit indicating that this TLB entry RPN points to an array of PTEs from which the TLB can then create direct entries. Thus, in order to invalidate those when PTE pages are deleted, we need the virtual address to pass to tlbilx or tlbivax instructions. The old trick of sticking it somewhere in the PTE page struct page sucks too much, the address is almost readily available in all call sites and almost everybody implemets these as macros, so we may as well add the argument everywhere. I added it to the pmd and pud variants for consistency. Signed-off-by: Benjamin Herrenschmidt Acked-by: David Howells [MN10300 & FRV] Acked-by: Nick Piggin Acked-by: Martin Schwidefsky [s390] Signed-off-by: Linus Torvalds --- arch/m32r/include/asm/pgalloc.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/m32r') diff --git a/arch/m32r/include/asm/pgalloc.h b/arch/m32r/include/asm/pgalloc.h index f11a2b909cd..0fc73619897 100644 --- a/arch/m32r/include/asm/pgalloc.h +++ b/arch/m32r/include/asm/pgalloc.h @@ -58,7 +58,7 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t pte) __free_page(pte); } -#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte)) +#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte)) /* * allocating and freeing a pmd is trivial: the 1-entry pmd is @@ -68,7 +68,7 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t pte) #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) #define pmd_free(mm, x) do { } while (0) -#define __pmd_free_tlb(tlb, x) do { } while (0) +#define __pmd_free_tlb(tlb, x, addr) do { } while (0) #define pgd_populate(mm, pmd, pte) BUG() #define check_pgt_cache() do { } while (0) -- cgit v1.2.3-70-g09d2