Commit-ID: 36a4526583ad61fe7cb7432f53bce52ea198813a
Gitweb: http://git.kernel.org/tip/36a4526583ad61fe7cb7432f53bce52ea198813a
Author: Hiroshi Shimamoto <h-shimamoto@xxxxxxxxxxxxx>
AuthorDate: Fri, 27 Feb 2009 10:29:09 -0800
Commit: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Sat, 28 Feb 2009 09:17:30 +0100
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@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
arch/x86/kernel/signal.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 82d37c7..89ef90d 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,
--
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