From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.skyhub.de ([2a01:4f8:120:8448::d00d]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZhZT7-0007Z3-2N for kexec@lists.infradead.org; Thu, 01 Oct 2015 08:44:02 +0000 Date: Thu, 1 Oct 2015 10:43:35 +0200 From: Borislav Petkov Subject: Re: [V4 PATCH 4/4] x86/apic: Introduce noextnmi boot option Message-ID: <20151001084335.GA3764@pd.tnic> References: <20150925112803.4258.94241.stgit@softrs> <20150925112811.4258.54494.stgit@softrs> <20150930115548.GI2881@worktop.programming.kicks-ass.net> <04EAB7311EE43145B2D3536183D1A8445499CD11@GSjpTKYDCembx31.service.hitachi.net> <20151001062733.GL2881@worktop.programming.kicks-ass.net> <04EAB7311EE43145B2D3536183D1A8445499D30D@GSjpTKYDCembx31.service.hitachi.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <04EAB7311EE43145B2D3536183D1A8445499D30D@GSjpTKYDCembx31.service.hitachi.net> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: =?utf-8?B?5rKz5ZCI6Iux5a6PIC8gS0FXQUnvvIxISURFSElSTw==?= Cc: "x86@kernel.org" , Jonathan Corbet , 'Peter Zijlstra' , "linux-doc@vger.kernel.org" , "kexec@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Michal Hocko , Ingo Molnar , Thomas Gleixner , "Eric W. Biederman" , "H. Peter Anvin" , =?utf-8?B?5bmz5p2+6ZuF5bezIC8gSElSQU1BVFXvvIxNQVNBTUk=?= , Andrew Morton , Ingo Molnar , Vivek Goyal T24gVGh1LCBPY3QgMDEsIDIwMTUgYXQgMDc6MDE6NTBBTSArMDAwMCwg5rKz5ZCI6Iux5a6PIC8g S0FXQUnvvIxISURFSElSTyB3cm90ZToKPiBJIHN1cHBvc2UgdGhhdCBhIHNldmVyIHdoaWNoIHVz ZXMgdGhpcyBmZWF0dXJlIHdpbGwgZXF1aXAgYSBCTUMKPiBhbmQgQk1DIG1hbmRhdG9yaWx5IHN1 cHBvcnRzIGhhcmQgcmVzZXQgY29tbWFuZCBmb3IgdGhlIHNlcnZlci4KPiBJZiB0aGUgSEEgY2x1 c3RlcmluZyBzb2Z0d2FyZSBkZXRlY3RzIG5vIHJlc3BvbnNlIGZyb20gdGhlIHNlcnZlcgo+IGFm dGVyIHJlbGF0aXZlbHkgbG9uZyB0aW1lb3V0LCBpdCBtaWdodCB3YW50IHRvIGluc2VydCBoYXJk IHJlc2V0Cj4gdG8gdGhlIHNlcnZlciBieSBJUE1JIG92ZXIgTEFOLgoKU28gd2h5IGRvZXNuJ3Qg dGhlIGNhcHR1cmUga2VybmVsICphdXRvbWF0aWNhbGx5KiBpZ25vcmUgZXh0ZXJuYWwgTk1JcywK d2l0aG91dCBhIGNtZGxpbmUgb3B0aW9uPwoKQmVmb3JlIGl0IHN0YXJ0cyBjYXB0dXJpbmcsIGl0 IHNheXM6ICJJJ20gc3RhcnRpbmcgY2FwdHVyaW5nIGFuZCBhbQppZ25vcmluZyBleHRlcm5hbCBO TUlzIGZyb20gbm93IG9uLiIKCi0tIApSZWdhcmRzL0dydXNzLAogICAgQm9yaXMuCgpFQ08gdGlw ICMxMDE6IFRyaW0geW91ciBtYWlscyB3aGVuIHlvdSByZXBseS4KCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmtleGVjIG1haWxpbmcgbGlzdAprZXhlY0Bs aXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlz dGluZm8va2V4ZWMK From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755522AbbJAInm (ORCPT ); Thu, 1 Oct 2015 04:43:42 -0400 Received: from mail.skyhub.de ([78.46.96.112]:51447 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750924AbbJAIni (ORCPT ); Thu, 1 Oct 2015 04:43:38 -0400 Date: Thu, 1 Oct 2015 10:43:35 +0200 From: Borislav Petkov To: =?utf-8?B?5rKz5ZCI6Iux5a6PIC8gS0FXQUnvvIxISURFSElSTw==?= Cc: "'Peter Zijlstra'" , Jonathan Corbet , Ingo Molnar , "Eric W. Biederman" , "H. Peter Anvin" , Andrew Morton , Thomas Gleixner , Vivek Goyal , "linux-doc@vger.kernel.org" , "x86@kernel.org" , "kexec@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Michal Hocko , Ingo Molnar , =?utf-8?B?5bmz5p2+6ZuF5bezIC8gSElSQU1BVFXvvIxNQVNBTUk=?= Subject: Re: [V4 PATCH 4/4] x86/apic: Introduce noextnmi boot option Message-ID: <20151001084335.GA3764@pd.tnic> References: <20150925112803.4258.94241.stgit@softrs> <20150925112811.4258.54494.stgit@softrs> <20150930115548.GI2881@worktop.programming.kicks-ass.net> <04EAB7311EE43145B2D3536183D1A8445499CD11@GSjpTKYDCembx31.service.hitachi.net> <20151001062733.GL2881@worktop.programming.kicks-ass.net> <04EAB7311EE43145B2D3536183D1A8445499D30D@GSjpTKYDCembx31.service.hitachi.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <04EAB7311EE43145B2D3536183D1A8445499D30D@GSjpTKYDCembx31.service.hitachi.net> 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 On Thu, Oct 01, 2015 at 07:01:50AM +0000, 河合英宏 / KAWAI，HIDEHIRO wrote: > I suppose that a sever which uses this feature will equip a BMC > and BMC mandatorily supports hard reset command for the server. > If the HA clustering software detects no response from the server > after relatively long timeout, it might want to insert hard reset > to the server by IPMI over LAN. So why doesn't the capture kernel *automatically* ignore external NMIs, without a cmdline option? Before it starts capturing, it says: "I'm starting capturing and am ignoring external NMIs from now on." -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply.