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Message-ID: <4AC9633B.5030202@jp.fujitsu.com> Date: Mon, 05 Oct 2009 12:08:43 +0900 From: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com> To: Huang Ying <ying.huang@...el.com> CC: Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>, Andi Kleen <ak@...ux.intel.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: [PATCH 5/6] mce-inject: add a barrier to raise_mce() The prepared mce_inject_cpumask needs to be referred soon in NMI on other CPUs. Reported-by: Huang Ying <ying.huang@...el.com> Signed-off-by: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com> --- arch/x86/kernel/cpu/mcheck/mce-inject.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c index 105e527..4fb5b78 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-inject.c +++ b/arch/x86/kernel/cpu/mcheck/mce-inject.c @@ -154,6 +154,9 @@ static void raise_mce(struct mce *m) != MCE_INJ_CTX_RANDOM) cpu_clear(cpu, mce_inject_cpumask); } + /* make sure mce_inject_cpumask is visible on other CPUs */ + smp_mb(); + if (!cpus_empty(mce_inject_cpumask)) apic->send_IPI_mask(&mce_inject_cpumask, NMI_VECTOR); start = jiffies; -- 1.6.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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