diff options
| author | Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> | 2009-02-27 19:29:09 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-28 09:17:30 +0100 |
| commit | 36a4526583ad61fe7cb7432f53bce52ea198813a (patch) | |
| tree | 38684599ce88fa96aaa33689dc37823041836a41 | |
| parent | x86: signal: intrroduce get_sigframe() and replace get_sigstack() (diff) | |
| download | linux-36a4526583ad61fe7cb7432f53bce52ea198813a.tar.xz linux-36a4526583ad61fe7cb7432f53bce52ea198813a.zip | |
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.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c index 82d37c77b0fb..89ef90df985f 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, |