From 909e90d3c410b684e564729145f7c20dad887757 Mon Sep 17 00:00:00 2001 From: Jeff Dike Date: Mon, 4 Feb 2008 22:31:06 -0800 Subject: [PATCH] uml: 64-bit tlb fixes Some 64-bit tlb fixes - moved pmd_page_vaddr to pgtable.h since it's the same for both 2-level and 3-level page tables fixed a bogus cast on pud_page_vaddr made the address checking in update_*_range more careful Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/kernel/tlb.c | 8 ++++---- include/asm-um/pgtable-2level.h | 3 --- include/asm-um/pgtable-3level.h | 3 +-- include/asm-um/pgtable.h | 3 +++ 4 files changed, 8 insertions(+), 9 deletions(-) diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index ef5a2a2..8127ca8 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -207,7 +207,7 @@ static inline int update_pte_range(pmd_t *pmd, unsigned long addr, else if (pte_newprot(*pte)) ret = add_mprotect(addr, PAGE_SIZE, prot, hvc); *pte = pte_mkuptodate(*pte); - } while (pte++, addr += PAGE_SIZE, ((addr != end) && !ret)); + } while (pte++, addr += PAGE_SIZE, ((addr < end) && !ret)); return ret; } @@ -229,7 +229,7 @@ static inline int update_pmd_range(pud_t *pud, unsigned long addr, } } else ret = update_pte_range(pmd, addr, next, hvc); - } while (pmd++, addr = next, ((addr != end) && !ret)); + } while (pmd++, addr = next, ((addr < end) && !ret)); return ret; } @@ -251,7 +251,7 @@ static inline int update_pud_range(pgd_t *pgd, unsigned long addr, } } else ret = update_pmd_range(pud, addr, next, hvc); - } while (pud++, addr = next, ((addr != end) && !ret)); + } while (pud++, addr = next, ((addr < end) && !ret)); return ret; } @@ -274,7 +274,7 @@ void fix_range_common(struct mm_struct *mm, unsigned long start_addr, } } else ret = update_pud_range(pgd, addr, next, &hvc); - } while (pgd++, addr = next, ((addr != end_addr) && !ret)); + } while (pgd++, addr = next, ((addr < end_addr) && !ret)); if (!ret) ret = do_ops(&hvc, hvc.index, 1); diff --git a/include/asm-um/pgtable-2level.h b/include/asm-um/pgtable-2level.h index 172a75f..f534b73 100644 --- a/include/asm-um/pgtable-2level.h +++ b/include/asm-um/pgtable-2level.h @@ -41,9 +41,6 @@ static inline void pgd_mkuptodate(pgd_t pgd) { } #define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot)) #define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot)) -#define pmd_page_vaddr(pmd) \ - ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK)) - /* * Bits 0 through 4 are taken */ diff --git a/include/asm-um/pgtable-3level.h b/include/asm-um/pgtable-3level.h index 48f8f5d..0446f45 100644 --- a/include/asm-um/pgtable-3level.h +++ b/include/asm-um/pgtable-3level.h @@ -87,8 +87,7 @@ static inline void pud_clear (pud_t *pud) } #define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK) -#define pud_page_vaddr(pud) \ - ((struct page *) __va(pud_val(pud) & PAGE_MASK)) +#define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PAGE_MASK)) /* Find an entry in the second-level page table.. */ #define pmd_offset(pud, address) ((pmd_t *) pud_page_vaddr(*(pud)) + \ diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h index fb477774..4102b44 100644 --- a/include/asm-um/pgtable.h +++ b/include/asm-um/pgtable.h @@ -308,6 +308,9 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) #define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK)) #define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)) +#define pmd_page_vaddr(pmd) \ + ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK)) + /* * the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE] * -- 2.7.4