Commit-ID: 63a0bb0477012ed0f5c9e5658d0c7f08c291525c Gitweb: http://git.kernel.org/tip/63a0bb0477012ed0f5c9e5658d0c7f08c291525c Author: Fenghua Yu <fenghua.yu@xxxxxxxxx> AuthorDate: Sat, 25 Aug 2012 10:41:27 -0700 Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> CommitDate: Sat, 25 Aug 2012 19:26:36 -0700 x86/i387.c: Initialize thread xstate only on CPU0 only once init_thread_xstate() is only called once to avoid overriding xstate_size during boot time or during CPU hotplug. Signed-off-by: Fenghua Yu <fenghua.yu@xxxxxxxxx> Link: http://lkml.kernel.org/r/1345916488-8355-12-git-send-email-fenghua.yu@xxxxxxxxx Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> --- arch/x86/kernel/i387.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index f250431..e4c3a21 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -188,7 +188,11 @@ void __cpuinit fpu_init(void) cr0 |= X86_CR0_EM; write_cr0(cr0); - if (!smp_processor_id()) + /* + * init_thread_xstate is only called once to avoid overriding + * xstate_size during boot time or during CPU hotplug. + */ + if (xstate_size == 0) init_thread_xstate(); mxcsr_feature_mask_init(); -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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