Messages in this thread Patch in this message | | | Date | Fri, 27 Feb 2009 10:29:09 -0800 | From | Hiroshi Shimamoto <> | Subject | [PATCH 3/5] x86: signal: use 16 bytes boundary for rt_sigframe |
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From: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
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> --- 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 5ed4533..951aa60 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, -- 1.6.1.2
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