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authorHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>2009-02-27 10:29:09 -0800
committerIngo Molnar <mingo@elte.hu>2009-02-28 09:17:30 +0100
commit36a4526583ad61fe7cb7432f53bce52ea198813a (patch)
tree38684599ce88fa96aaa33689dc37823041836a41
parent97286a2b64725aac2d584ddd1f94871f9991d5a1 (diff)
x86: signal: use 16 bytes boundary for rt_sigframe
Impact: cleanup Supporting xsave/xrestore introduces 64 bytes boundary for save_i387_xstate(). 16 bytes boundary is OK for rt_sigframe. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--arch/x86/kernel/signal.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 82d37c77b0f..89ef90df985 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -409,15 +409,13 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,
if (used_math()) {
sp -= sig_xstate_size;
*fpstate = (void __user *)round_down(sp, 64);
+
if (save_i387_xstate(*fpstate) < 0)
return (void __user *) -1L;
-
- sp -= frame_size;
- return (void __user *)round_down(sp, 16) - 8;
}
sp -= frame_size;
- return (void __user *)round_down(sp, 64) - 8;
+ return (void __user *)round_down(sp, 16) - 8;
}
static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,