From: Gabriele Paoloni <gabriele.paoloni@intel.com>
To: tony.luck@intel.com, bp@alien8.de, tglx@linutronix.de,
mingo@redhat.com, x86@kernel.org, hpa@zytor.com,
linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: gabriele.paoloni@intel.com, linux-safety@lists.elisa.tech
Subject: [PATCH v2 3/5] x86/mce: for LMCE panic only if mca_cfg.tolerant < 3
Date: Fri, 27 Nov 2020 16:18:17 +0000 [thread overview]
Message-ID: <20201127161819.3106432-4-gabriele.paoloni@intel.com> (raw)
In-Reply-To: <20201127161819.3106432-1-gabriele.paoloni@intel.com>
Right now for LMCE if no_way_out is set mce_panic() is called
regardless of mca_cfg.tolerant. This is not correct as, if
mca_cfg.tolerant = 3, the code should never panic.
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
---
arch/x86/kernel/cpu/mce/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 50e9b0893a92..d766a3f6a343 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -1367,7 +1367,7 @@ noinstr void do_machine_check(struct pt_regs *regs)
* to see it will clear it.
*/
if (lmce) {
- if (no_way_out)
+ if (no_way_out && mca_cfg.tolerant < 3)
mce_panic("Fatal local machine check", &m, msg);
} else {
order = mce_start(&no_way_out);
--
2.20.1
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next prev parent reply other threads:[~2020-11-27 16:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-27 16:18 [PATCH v2 0/5] x86/MCE: some minor fixes Gabriele Paoloni
2020-11-27 16:18 ` [PATCH v2 1/5] x86/mce: do not overwrite no_way_out if mce_end() fails Gabriele Paoloni
2020-11-27 16:18 ` [PATCH v2 2/5] x86/mce: move the mce_panic() call and 'kill_it' assignments to the right places Gabriele Paoloni
2020-11-27 16:18 ` Gabriele Paoloni [this message]
2020-11-27 16:18 ` [PATCH v2 4/5] x86/mce: remove redundant call to irq_work_queue() Gabriele Paoloni
2020-11-27 16:18 ` [PATCH v2 5/5] x86/mce: rename kill_it as kill_current_task Gabriele Paoloni
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