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Message-ID: <987664A83D2D224EAE907B061CE93D5301EE794AEF@orsmsx505.amr.corp.intel.com> Date: Tue, 11 Oct 2011 11:59:41 -0700 From: "Luck, Tony" <tony.luck@...el.com> To: "prasad@...ux.vnet.ibm.com" <prasad@...ux.vnet.ibm.com>, Borislav Petkov <bp@...en8.de>, Vivek Goyal <vgoyal@...hat.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "crash-utility@...hat.com" <crash-utility@...hat.com>, "kexec@...ts.infradead.org" <kexec@...ts.infradead.org>, Andi Kleen <andi@...stfloor.org>, "Eric W. Biederman" <ebiederm@...ssion.com>, "anderson@...hat.com" <anderson@...hat.com>, "tachibana@....nes.nec.co.jp" <tachibana@....nes.nec.co.jp>, "oomichi@....nes.nec.co.jp" <oomichi@....nes.nec.co.jp>, "Valdis.Kletnieks@...edu" <Valdis.Kletnieks@...edu>, Nick Bowler <nbowler@...iptictech.com> Subject: RE: [Patch 1/4][kernel][slimdump] Add new elf-note of type NT_NOCOREDUMP to capture slimdump > So, in any case we may not be able to disable machine-check exceptions > (MCEs) only within the context of kexec'ed kernel. Let me know if I've > missed something here. Linux sets the CR4.MCE bit - look for "set_in_cr4(X86_CR4_MCE)" for places where it does so. You can ask it not to do that with "mce=off" argument. So we can control this from the OS level. -Tony -- 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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