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| author |   Andy Lutomirski <luto@kernel.org> | 2017-07-28 06:00:32 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2017-07-30 12:04:41 +0200 |
| commit | 99504819fc643160afd6813921b1d42b18e52a49 (patch) | |
| tree | 62a0b10abab5e773b6e28988b54301faca83b028 /arch/x86/ia32 | |
| parent | x86/traps: Don't clear segment high bits in early_idt_handler_common() (diff) | |
| download | linux-dev-99504819fc643160afd6813921b1d42b18e52a49.tar.xz linux-dev-99504819fc643160afd6813921b1d42b18e52a49.zip | |
x86/asm/32: Remove a bunch of '& 0xffff' from pt_regs segment reads
Now that pt_regs properly defines segment fields as 16-bit on 32-bit
CPUs, there's no need to mask off the high word.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bpetkov@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/ia32')
| -rw-r--r-- | arch/x86/ia32/ia32_signal.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c index 724153797209..e0bb46c02857 100644 --- a/arch/x86/ia32/ia32_signal.c +++ b/arch/x86/ia32/ia32_signal.c @@ -226,7 +226,7 @@ static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, if (ksig->ka.sa.sa_flags & SA_ONSTACK) sp = sigsp(sp, ksig); /* This is the legacy signal stack switching. */ - else if ((regs->ss & 0xffff) != __USER32_DS && + else if (regs->ss != __USER32_DS && !(ksig->ka.sa.sa_flags & SA_RESTORER) && ksig->ka.sa.sa_restorer) sp = (unsigned long) ksig->ka.sa.sa_restorer; |