diff options
Diffstat (limited to 'arch/arc/mm/fault.c')
| -rw-r--r-- | arch/arc/mm/fault.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c index 5ca59a482632..95119a5e7761 100644 --- a/arch/arc/mm/fault.c +++ b/arch/arc/mm/fault.c @@ -13,6 +13,7 @@ #include <linux/kdebug.h> #include <linux/perf_event.h> #include <linux/mm_types.h> +#include <asm/entry.h> #include <asm/mmu.h> /* @@ -99,10 +100,10 @@ void do_page_fault(unsigned long address, struct pt_regs *regs) if (faulthandler_disabled() || !mm) goto no_context; - if (regs->ecr_cause & ECR_C_PROTV_STORE) /* ST/EX */ + if (regs->ecr.cause & ECR_C_PROTV_STORE) /* ST/EX */ write = 1; - else if ((regs->ecr_vec == ECR_V_PROTV) && - (regs->ecr_cause == ECR_C_PROTV_INST_FETCH)) + else if ((regs->ecr.vec == ECR_V_PROTV) && + (regs->ecr.cause == ECR_C_PROTV_INST_FETCH)) exec = 1; flags = FAULT_FLAG_DEFAULT; @@ -113,15 +114,9 @@ void do_page_fault(unsigned long address, struct pt_regs *regs) perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); retry: - mmap_read_lock(mm); - - vma = find_vma(mm, address); + vma = lock_mm_and_find_vma(mm, address, regs); if (!vma) - goto bad_area; - if (unlikely(address < vma->vm_start)) { - if (!(vma->vm_flags & VM_GROWSDOWN) || expand_stack(vma, address)) - goto bad_area; - } + goto bad_area_nosemaphore; /* * vm_area is good, now check permissions for this memory access @@ -161,6 +156,7 @@ retry: bad_area: mmap_read_unlock(mm); +bad_area_nosemaphore: /* * Major/minor page fault accounting * (in case of retry we only land here once) |