diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/i386/mm/fault.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/i386/mm/fault.c b/arch/i386/mm/fault.c index f38085ff3c3d..bd6fe96cc16d 100644 --- a/arch/i386/mm/fault.c +++ b/arch/i386/mm/fault.c | |||
@@ -77,12 +77,15 @@ static inline unsigned long get_segment_eip(struct pt_regs *regs, | |||
77 | unsigned seg = regs->xcs & 0xffff; | 77 | unsigned seg = regs->xcs & 0xffff; |
78 | u32 seg_ar, seg_limit, base, *desc; | 78 | u32 seg_ar, seg_limit, base, *desc; |
79 | 79 | ||
80 | /* Unlikely, but must come before segment checks. */ | ||
81 | if (unlikely(regs->eflags & VM_MASK)) { | ||
82 | base = seg << 4; | ||
83 | *eip_limit = base + 0xffff; | ||
84 | return base + (eip & 0xffff); | ||
85 | } | ||
86 | |||
80 | /* The standard kernel/user address space limit. */ | 87 | /* The standard kernel/user address space limit. */ |
81 | *eip_limit = (seg & 3) ? USER_DS.seg : KERNEL_DS.seg; | 88 | *eip_limit = (seg & 3) ? USER_DS.seg : KERNEL_DS.seg; |
82 | |||
83 | /* Unlikely, but must come before segment checks. */ | ||
84 | if (unlikely((regs->eflags & VM_MASK) != 0)) | ||
85 | return eip + (seg << 4); | ||
86 | 89 | ||
87 | /* By far the most common cases. */ | 90 | /* By far the most common cases. */ |
88 | if (likely(seg == __USER_CS || seg == __KERNEL_CS)) | 91 | if (likely(seg == __USER_CS || seg == __KERNEL_CS)) |