Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752961AbbLVLOr (ORCPT ); Tue, 22 Dec 2015 06:14:47 -0500 Received: from mail.skyhub.de ([78.46.96.112]:56095 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754782AbbLVLOE (ORCPT ); Tue, 22 Dec 2015 06:14:04 -0500 Date: Tue, 22 Dec 2015 12:14:01 +0100 From: Borislav Petkov To: Tony Luck Cc: Ingo Molnar , Andrew Morton , Andy Lutomirski , Dan Williams , Elliott@pd.tnic, Robert , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@ml01.01.org, x86@kernel.org Subject: Re: [PATCHV3 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas Message-ID: <20151222111401.GD3728@pd.tnic> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1206 Lines: 31 On Tue, Dec 15, 2015 at 05:29:59PM -0800, Tony Luck wrote: > Extend the severity checking code to add a new context IN_KERN_RECOV > which is used to indicate that the machine check was triggered by code > in the kernel with a fixup entry. > > Add code to check for this situation and respond by altering the return > IP to the fixup address. > > Major re-work to the tail code in do_machine_check() to make all this > readable/maintainable. One functional change is that tolerant=3 no longer > stops recovery actions. Revert to only skipping sending SIGBUS to the > current process. > > Signed-off-by: Tony Luck > --- > arch/x86/kernel/cpu/mcheck/mce-severity.c | 21 +++++++++- > arch/x86/kernel/cpu/mcheck/mce.c | 70 ++++++++++++++++--------------- > 2 files changed, 55 insertions(+), 36 deletions(-) Reviewed-by: Borislav Petkov -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/