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| author | Eric W. Biederman <ebiederm@xmission.com> | 2018-09-18 01:31:24 +0300 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-09-21 15:52:12 +0300 |
| commit | 988bbc7b1a349a0139d5837d29a91714f8f512f4 (patch) | |
| tree | f93be9c06f63e0bf7947498fcd63e5c28618b4b0 | |
| parent | 25c102d803eacf4741a067384f2d15b35f410ff2 (diff) | |
| download | linux-988bbc7b1a349a0139d5837d29a91714f8f512f4.tar.xz | |
signal/x86: Don't compute pkey in __do_page_fault
There are no more users of the computed pkey value in __do_page_fault
so stop computing the value.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
| -rw-r--r-- | arch/x86/mm/fault.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index bc27595dd8c7..b3d8aee7564c 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -1216,7 +1216,6 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code, struct mm_struct *mm; vm_fault_t fault, major = 0; unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE; - u32 pkey; tsk = current; mm = tsk->mm; @@ -1388,10 +1387,7 @@ good_area: * (potentially after handling any pending signal during the return to * userland). The return to userland is identified whenever * FAULT_FLAG_USER|FAULT_FLAG_KILLABLE are both set in flags. - * Thus we have to be careful about not touching vma after handling the - * fault, so we read the pkey beforehand. */ - pkey = vma_pkey(vma); fault = handle_mm_fault(vma, address, flags); major |= fault & VM_FAULT_MAJOR; |