diff options
Diffstat (limited to 'arch/cris/arch-v10/mm/fault.c')
| -rw-r--r-- | arch/cris/arch-v10/mm/fault.c | 44 |
1 files changed, 11 insertions, 33 deletions
diff --git a/arch/cris/arch-v10/mm/fault.c b/arch/cris/arch-v10/mm/fault.c index 6805cdb25a5..ed60588f846 100644 --- a/arch/cris/arch-v10/mm/fault.c +++ b/arch/cris/arch-v10/mm/fault.c @@ -4,16 +4,17 @@ * Low level bus fault handler * * - * Copyright (C) 2000, 2001 Axis Communications AB + * Copyright (C) 2000-2007 Axis Communications AB + * + * Authors: Bjorn Wesen * - * Authors: Bjorn Wesen - * */ #include <linux/mm.h> #include <asm/uaccess.h> #include <asm/pgtable.h> -#include <asm/arch/svinto.h> +#include <arch/svinto.h> +#include <asm/mmu_context.h> /* debug of low-level TLB reload */ #undef DEBUG @@ -24,8 +25,6 @@ #define D(x) #endif -extern volatile pgd_t *current_pgd; - extern const struct exception_table_entry *search_exception_tables(unsigned long addr); @@ -46,7 +45,7 @@ handle_mmu_bus_fault(struct pt_regs *regs) int page_id; int acc, inv; #endif - pgd_t* pgd = (pgd_t*)current_pgd; + pgd_t* pgd = (pgd_t*)per_cpu(current_pgd, smp_processor_id()); pmd_t *pmd; pte_t pte; int miss, we, writeac; @@ -61,7 +60,7 @@ handle_mmu_bus_fault(struct pt_regs *regs) #ifdef DEBUG page_id = IO_EXTRACT(R_MMU_CAUSE, page_id, cause); acc = IO_EXTRACT(R_MMU_CAUSE, acc_excp, cause); - inv = IO_EXTRACT(R_MMU_CAUSE, inv_excp, cause); + inv = IO_EXTRACT(R_MMU_CAUSE, inv_excp, cause); index = IO_EXTRACT(R_TLB_SELECT, index, select); #endif miss = IO_EXTRACT(R_MMU_CAUSE, miss_excp, cause); @@ -81,37 +80,16 @@ handle_mmu_bus_fault(struct pt_regs *regs) * do_page_fault may have flushed the TLB so we have to restore * the MMU registers. */ - local_save_flags(flags); - local_irq_disable(); + local_irq_save(flags); pmd = (pmd_t *)(pgd + pgd_index(address)); if (pmd_none(*pmd)) - return; + goto exit; pte = *pte_offset_kernel(pmd, address); if (!pte_present(pte)) - return; + goto exit; *R_TLB_SELECT = select; *R_TLB_HI = cause; *R_TLB_LO = pte_val(pte); +exit: local_irq_restore(flags); } - -/* Called from arch/cris/mm/fault.c to find fixup code. */ -int -find_fixup_code(struct pt_regs *regs) -{ - const struct exception_table_entry *fixup; - - if ((fixup = search_exception_tables(regs->irp)) != 0) { - /* Adjust the instruction pointer in the stackframe. */ - regs->irp = fixup->fixup; - - /* - * Don't return by restoring the CPU state, so switch - * frame-type. - */ - regs->frametype = CRIS_FRAME_NORMAL; - return 1; - } - - return 0; -} |