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| author | Harvey Harrison <harvey.harrison@gmail.com> | 2008-01-30 15:33:42 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 15:33:42 +0300 |
| commit | e66a95127dc4273d3573eb03657991f7bbd5dca3 (patch) | |
| tree | 2577fb7c4d06d69dfc602b8e6c5720f1a3f97244 /arch/x86/mm/fault_32.c | |
| parent | 0c42f392767d3592e1cf676857d398ef69be7c9c (diff) | |
| download | linux-e66a95127dc4273d3573eb03657991f7bbd5dca3.tar.xz | |
x86: add dump_pagetable helper to X86_32
Similar to x86 64-bit.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/mm/fault_32.c')
| -rw-r--r-- | arch/x86/mm/fault_32.c | 72 |
1 files changed, 39 insertions, 33 deletions
diff --git a/arch/x86/mm/fault_32.c b/arch/x86/mm/fault_32.c index 93ede2dde958..41c31968a74c 100644 --- a/arch/x86/mm/fault_32.c +++ b/arch/x86/mm/fault_32.c @@ -173,6 +173,44 @@ static void force_sig_info_fault(int si_signo, int si_code, force_sig_info(si_signo, &info, tsk); } +void dump_pagetable(unsigned long address) +{ + __typeof__(pte_val(__pte(0))) page; + + page = read_cr3(); + page = ((__typeof__(page) *) __va(page))[address >> PGDIR_SHIFT]; +#ifdef CONFIG_X86_PAE + printk("*pdpt = %016Lx ", page); + if ((page >> PAGE_SHIFT) < max_low_pfn + && page & _PAGE_PRESENT) { + page &= PAGE_MASK; + page = ((__typeof__(page) *) __va(page))[(address >> PMD_SHIFT) + & (PTRS_PER_PMD - 1)]; + printk(KERN_CONT "*pde = %016Lx ", page); + page &= ~_PAGE_NX; + } +#else + printk("*pde = %08lx ", page); +#endif + + /* + * We must not directly access the pte in the highpte + * case if the page table is located in highmem. + * And let's rather not kmap-atomic the pte, just in case + * it's allocated already. + */ + if ((page >> PAGE_SHIFT) < max_low_pfn + && (page & _PAGE_PRESENT) + && !(page & _PAGE_PSE)) { + page &= PAGE_MASK; + page = ((__typeof__(page) *) __va(page))[(address >> PAGE_SHIFT) + & (PTRS_PER_PTE - 1)]; + printk("*pte = %0*Lx ", sizeof(page)*2, (u64)page); + } + + printk("\n"); +} + void do_invalid_op(struct pt_regs *, unsigned long); static inline pmd_t *vmalloc_sync_one(pgd_t *pgd, unsigned long address) @@ -572,7 +610,6 @@ no_context: bust_spinlocks(1); if (oops_may_print()) { - __typeof__(pte_val(__pte(0))) page; #ifdef CONFIG_X86_PAE if (error_code & PF_INSTR) { @@ -593,38 +630,7 @@ no_context: printk(" at virtual address %08lx\n", address); printk(KERN_ALERT "printing ip: %08lx ", regs->ip); - page = read_cr3(); - page = ((__typeof__(page) *) __va(page))[address >> PGDIR_SHIFT]; -#ifdef CONFIG_X86_PAE - printk("*pdpt = %016Lx ", page); - if ((page >> PAGE_SHIFT) < max_low_pfn - && page & _PAGE_PRESENT) { - page &= PAGE_MASK; - page = ((__typeof__(page) *) __va(page))[(address >> PMD_SHIFT) - & (PTRS_PER_PMD - 1)]; - printk(KERN_CONT "*pde = %016Lx ", page); - page &= ~_PAGE_NX; - } -#else - printk("*pde = %08lx ", page); -#endif - - /* - * We must not directly access the pte in the highpte - * case if the page table is located in highmem. - * And let's rather not kmap-atomic the pte, just in case - * it's allocated already. - */ - if ((page >> PAGE_SHIFT) < max_low_pfn - && (page & _PAGE_PRESENT) - && !(page & _PAGE_PSE)) { - page &= PAGE_MASK; - page = ((__typeof__(page) *) __va(page))[(address >> PAGE_SHIFT) - & (PTRS_PER_PTE - 1)]; - printk("*pte = %0*Lx ", sizeof(page)*2, (u64)page); - } - - printk("\n"); + dump_pagetable(address); } tsk->thread.cr2 = address; |