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authorAndy Lutomirski <luto@kernel.org>2017-07-28 06:00:32 -0700
committerIngo Molnar <mingo@kernel.org>2017-07-30 12:04:41 +0200
commit99504819fc643160afd6813921b1d42b18e52a49 (patch)
tree62a0b10abab5e773b6e28988b54301faca83b028 /arch/x86/ia32/ia32_signal.c
parent630c1863bc1c6c0ac33e5134bec7bdf7941c28c8 (diff)
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/ia32_signal.c')
-rw-r--r--arch/x86/ia32/ia32_signal.c2
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;