diff options
| -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 93ede2d..41c3196 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; |
