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x86/vsyscall/64: Use X86_PF constants in the simulated #PF error code 

Rather than hardcoding 6 with a comment, use the defined constants.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/e023f20352b0d05a8b0205629897917262d2ad68.1542841400.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andy Lutomirski 2018-11-21 15:11:26 -08:00 committed by Ingo Molnar
parent d38bc89c72
commit af2ebdcf04
1 changed files with 1 additions and 1 deletions
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arch/x86/entry/vsyscall/vsyscall_64.c
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@ -102,7 +102,7 @@ static bool write_ok_or_segv(unsigned long ptr, size_t size)
if (!access_ok(VERIFY_WRITE, (void __user *)ptr, size)) {
struct thread_struct *thread = &current->thread;
thread->error_code = 6; /* user fault, no page, write */
thread->error_code = X86_PF_USER | X86_PF_WRITE;
thread->cr2 = ptr;
thread->trap_nr = X86_TRAP_PF;