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 3/4] x86/mce: for LMCE panic only if mca_cfg.tolerant < 3 Date: Wed, 18 Nov 2020 15:15:51 +0000 [thread overview] Message-ID: <20201118151552.1412-4-gabriele.paoloni@intel.com> (raw) In-Reply-To: <20201118151552.1412-1-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 we 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 e025ff04438f..d16cbb05b09c 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 --------------------------------------------------------------------- INTEL CORPORATION ITALIA S.p.A. con unico socio Sede: Milanofiori Palazzo E 4 CAP 20094 Assago (MI) Capitale Sociale Euro 104.000,00 interamente versato Partita I.V.A. e Codice Fiscale 04236760155 Repertorio Economico Amministrativo n. 997124 Registro delle Imprese di Milano nr. 183983/5281/33 Soggetta ad attivita' di direzione e coordinamento di INTEL CORPORATION, USA This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.
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From: "Paoloni, Gabriele" <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: [linux-safety] [PATCH 3/4] x86/mce: for LMCE panic only if mca_cfg.tolerant < 3 Date: Wed, 18 Nov 2020 15:15:51 +0000 [thread overview] Message-ID: <20201118151552.1412-4-gabriele.paoloni@intel.com> (raw) In-Reply-To: <20201118151552.1412-1-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 we 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 e025ff04438f..d16cbb05b09c 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 --------------------------------------------------------------------- INTEL CORPORATION ITALIA S.p.A. con unico socio Sede: Milanofiori Palazzo E 4 CAP 20094 Assago (MI) Capitale Sociale Euro 104.000,00 interamente versato Partita I.V.A. e Codice Fiscale 04236760155 Repertorio Economico Amministrativo n. 997124 Registro delle Imprese di Milano nr. 183983/5281/33 Soggetta ad attivita' di direzione e coordinamento di INTEL CORPORATION, USA This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#176): https://lists.elisa.tech/g/linux-safety/message/176 Mute This Topic: https://lists.elisa.tech/mt/78342500/5278000 Group Owner: linux-safety+owner@lists.elisa.tech Unsubscribe: https://lists.elisa.tech/g/linux-safety/unsub [linux-safety@archiver.kernel.org] -=-=-=-=-=-=-=-=-=-=-=-
next prev parent reply other threads:[~2020-11-18 15:16 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-18 15:15 [PATCH 0/4] x86/MCE: some minor fixes Gabriele Paoloni 2020-11-18 15:15 ` [linux-safety] " Paoloni, Gabriele 2020-11-18 15:15 ` [PATCH 1/4] x86/mce: do not overwrite no_way_out if mce_end() fails Gabriele Paoloni 2020-11-18 15:15 ` [linux-safety] " Paoloni, Gabriele 2020-11-20 17:07 ` Borislav Petkov 2020-11-20 17:07 ` [linux-safety] " Borislav Petkov 2020-11-20 17:31 ` Paoloni, Gabriele 2020-11-20 17:31 ` [linux-safety] " Paoloni, Gabriele 2020-11-20 17:33 ` Borislav Petkov 2020-11-20 17:33 ` [linux-safety] " Borislav Petkov 2020-11-23 14:35 ` Borislav Petkov 2020-11-23 14:35 ` [linux-safety] " Borislav Petkov 2020-11-20 17:32 ` Borislav Petkov 2020-11-20 17:32 ` [linux-safety] " Borislav Petkov 2020-11-20 17:35 ` Paoloni, Gabriele 2020-11-20 17:35 ` [linux-safety] " Paoloni, Gabriele 2020-11-18 15:15 ` [PATCH 2/4] x86/mce: move the mce_panic() call and kill_it assignments at the right places Gabriele Paoloni 2020-11-18 15:15 ` [linux-safety] " Paoloni, Gabriele 2020-11-23 14:27 ` Borislav Petkov 2020-11-23 14:27 ` [linux-safety] " Borislav Petkov 2020-11-23 17:06 ` Paoloni, Gabriele 2020-11-23 17:06 ` [linux-safety] " Paoloni, Gabriele 2020-11-23 17:19 ` Borislav Petkov 2020-11-23 17:19 ` [linux-safety] " Borislav Petkov 2020-11-23 17:40 ` Paoloni, Gabriele 2020-11-23 17:40 ` [linux-safety] " Paoloni, Gabriele 2020-11-23 18:07 ` Borislav Petkov 2020-11-23 18:07 ` [linux-safety] " Borislav Petkov 2020-11-18 15:15 ` Gabriele Paoloni [this message] 2020-11-18 15:15 ` [linux-safety] [PATCH 3/4] x86/mce: for LMCE panic only if mca_cfg.tolerant < 3 Paoloni, Gabriele 2020-11-18 15:15 ` [PATCH 4/4] x86/mce: remove redundant call to irq_work_queue() Gabriele Paoloni 2020-11-18 15:15 ` [linux-safety] " Paoloni, Gabriele
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