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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-07-22 15:44:28 +1000
committerLinus Torvalds <torvalds@linux-foundation.org>2009-07-27 12:10:38 -0700
commit9e1b32caa525cb236e80e9c671e179bcecccc657 (patch)
tree8a1f0abf5291b23047cfdf099d5cfc96cc9d9253 /arch/m68k
parent4be3bd7849165e7efa6b0b35a23d6a3598d97465 (diff)
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 <benh@kernel.crashing.org> Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV] Acked-by: Nick Piggin <npiggin@suse.de> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/include/asm/motorola_pgalloc.h6
-rw-r--r--arch/m68k/include/asm/sun3_pgalloc.h4
2 files changed, 6 insertions, 4 deletions
diff --git a/arch/m68k/include/asm/motorola_pgalloc.h b/arch/m68k/include/asm/motorola_pgalloc.h
index d08bf6261df..15ee4c74a9f 100644
--- a/arch/m68k/include/asm/motorola_pgalloc.h
+++ b/arch/m68k/include/asm/motorola_pgalloc.h
@@ -54,7 +54,8 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t page)
__free_page(page);
}
-static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page)
+static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page,
+ unsigned long address)
{
pgtable_page_dtor(page);
cache_page(kmap(page));
@@ -73,7 +74,8 @@ static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
return free_pointer_table(pmd);
}
-static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
+static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
+ unsigned long address)
{
return free_pointer_table(pmd);
}
diff --git a/arch/m68k/include/asm/sun3_pgalloc.h b/arch/m68k/include/asm/sun3_pgalloc.h
index d4c83f14381..48d80d5a666 100644
--- a/arch/m68k/include/asm/sun3_pgalloc.h
+++ b/arch/m68k/include/asm/sun3_pgalloc.h
@@ -32,7 +32,7 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t page)
__free_page(page);
}
-#define __pte_free_tlb(tlb,pte) \
+#define __pte_free_tlb(tlb,pte,addr) \
do { \
pgtable_page_dtor(pte); \
tlb_remove_page((tlb), pte); \
@@ -80,7 +80,7 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page
* inside the pgd, so has no extra memory associated with it.
*/
#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)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{