From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wi0-f182.google.com ([209.85.212.182]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZMY28-00042O-0E for kexec@lists.infradead.org; Tue, 04 Aug 2015 08:57:17 +0000 Received: by wibxm9 with SMTP id xm9so156161794wib.0 for ; Tue, 04 Aug 2015 01:56:53 -0700 (PDT) Date: Tue, 4 Aug 2015 10:56:51 +0200 From: Michal Hocko Subject: Re: Re: [V2 PATCH 1/3] x86/panic: Fix re-entrance problem due to panic on NMI Message-ID: <20150804085651.GC18509@dhcp22.suse.cz> References: <55B6E2A3.8070004@hitachi.com> <04EAB7311EE43145B2D3536183D1A8445491D5E8@GSjpTKYDCembx31.service.hitachi.net> <20150729082329.GA15801@dhcp22.suse.cz> <04EAB7311EE43145B2D3536183D1A8445491DB5E@GSjpTKYDCembx31.service.hitachi.net> <20150729092157.GC15801@dhcp22.suse.cz> <04EAB7311EE43145B2D3536183D1A8445491F23A@GSjpTKYDCembx31.service.hitachi.net> <20150730074812.GA9387@dhcp22.suse.cz> <04EAB7311EE43145B2D3536183D1A8445491FC55@GSjpTKYDCembx31.service.hitachi.net> <20150730122747.GA3954@dhcp22.suse.cz> <04EAB7311EE43145B2D3536183D1A844549220E7@GSjpTKYDCembx31.service.hitachi.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <04EAB7311EE43145B2D3536183D1A844549220E7@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" , Ingo Molnar , Thomas Gleixner , "Eric W. Biederman" , "H. Peter Anvin" , =?utf-8?B?5bmz5p2+6ZuF5bezIC8gSElSQU1BVFXvvIxNQVNBTUk=?= , Andrew Morton , Ingo Molnar , Vivek Goyal T24gRnJpIDMxLTA3LTE1IDExOjIzOjAwLCDmsrPlkIjoi7Hlro8gLyBLQVdBSe+8jEhJREVISVJP IHdyb3RlOgo+ID4gRnJvbTogTWljaGFsIEhvY2tvIFttYWlsdG86bWhvY2tvQGtlcm5lbC5vcmdd ClsuLi5dCj4gPiBJIGFtIHNheWluZyB0aGF0IHdhdGNoZG9nX292ZXJmbG93X2NhbGxiYWNrIG1p Z2h0IHRyaWdnZXIgb24gbW9yZSBDUFVzCj4gPiBhbmQgcGFuaWMgZnJvbSBOTUkgY29udGV4dCBh cyB3ZWxsLiBTbyB0aGlzIGlzIG5vdCByZWR1Y2VkIHRvIHRoZSBOTUkKPiA+IGJ1dHRvbiBzZW5k cyBOTUkgdG8gbW9yZSBDUFVzLgo+IAo+IEkgdW5kZXJzdGFuZC4gIFNvLCBJIGhhdmUgdG8gYWxz byBtb2RpZnkgd2F0Y2hkb2dfb3ZlcmZsb3dfY2FsbGJhY2sKPiB0byBjYWxsIG5taV9wYW5pYygp LgoKeWVzLgoKWy4uLl0KPiA+ID4gVGhlcmUgaXMgYSB0aW1lb3V0IG9mIDEwMDBtcyBpbiBubWlf c2hvb3Rkb3duX2NwdXMoKSwgc28gSSBkb24ndCBrbm93Cj4gPiA+IHdoeSBDUFUgMTMwIHdhaXRz IHNvIGxvbmcuICBJJ2xsIHRyeSB0byBjb25zaWRlciBmb3IgYSB3aGlsZS4KPiA+IAo+ID4gWWVz LCBJIGRvIG5vdCB1bmRlcnN0YW5kIHRoZSB0aW1pbmcgaGVyZSBlaXRoZXIgYW5kIHRoZSBmYWN0 IHRoYXQgdGhlCj4gPiBsb2cgaXMgYSBjb21wbGV0ZSBtZXNzIGluIHRoZSBpbXBvcnRhbnQgcGFy dHMgZG9lc24ndCBoZWxwIGEgd2VlIGJpdC4KPiAKPiBJJ20gaW50ZXJlc3RlZCBpbiB3aGVyZSAi a2VybmVsIHBhbmljIC1ub3Qgc3luY2luZzogIiBpcy4KPiBJdCBtYXkgZ2l2ZSB1cyBhIGNsdWUu CgpUaGlzIG9uZSBpcyBsb3N0IGluIHRoZSBtYW5nbGVkIHRleHQ6ClsgIDE2Ny44NDM3NzFdIFU8 MD5bICAxNjcuODQzNzcxXSBoaHVoLiBOTUkgcmVjZWl2ZWQgZm9yIHVua248MD48MD5bICAxNjcu ODQzNzY1XSBVaFsgIDE2Tk04NDM3NzRJIG93biByZWEgcmVpdmVkIGZvciB1bmtub3c8MCByICAx Nm4gMmQgNzY1XSBVaGh1aC4gQ1BVIHJlY2VpMTEuIDwwa25vd24gcmVhc29uIDcuIG9uNzcwXSBL ZXI8WyAtIG5vdCBybiBOTUk6bmljIC0gbm90IGNvbnR0IHNpbmcKCjwwID5bIDogTm90IGNvbi5p bnU0MzdhemVkIGFuZCBjb25mdXNlZCwgYl0gRHRyeWluZ2FlZCBhbm51ZQoKZnUgMTY3Ljh1dCB0 cnlpbmc+WyAgIHRvIDcuPDAzNzcgMTY3Ljg0Mzc3NV0gVTwwPlsgIDE2Ny44NDM3NzZdIF1oaHUu aXZlZCBmb3IgdTNua25vd24gck1hc29uIDMgcmUgb2l2ZWQgZm9yIFtuazE2Ny44NDM3ODFdICAx Lgo8LiBOMD5bICAxNjcuODQzNzgxXSBVaC4gTk1JIHJlY2VuIDNkIG9uIENQVSAwLmk8ID5bIG5v d29uIDNkIG9uXSBDaGh1aC5NSQplY2VpdmVkWyBvcjcuODQzbmtub1VoaHVoLnduIHJNYXNvbiBl M2QgY2VDUGl2VWQgMTIwLgo8MG5rPm5vIDE2Ny53bjg0M2Fzb24gM25hIHMgcDEyMC4KbzwwZXIg c2F2aSBkNiBlODQzYWI4OF0gRG8geWV1IGhhdmUgYQo8dHJhbmdlMD5bIGVyIHNhdmluZyBtb2Rl IGUgbmFibDFkPzc8NF1bICAxNjcgODRodTk0XU1JdWguIE5jZUlpdmVkIGZvciB1bmtub3duIHJl YXMgdmRmb3IgMW5vM3dhczA+WyAyZCA2Ny44NDM4MG9uIENJIHJVZSAxMmUuCml2ZTdkOHUzODAw d24gcnZlYXNlbyBmMmQgb24gQ1BvMy5yPCB1PmtbbyAxIHJlYTZzLm8yZDggb28geW91IGhuIGFQ dmUgPDBzdD5hIGUgcG93ZXIgMXM3Ljg0MzgxNl0gRG8geW9hdXYgbmcgbW9hZGUgZW5ic2xyYT9u Z1sgZSAxNjcuODQzOHA0MW9dZXIgc2hodWhhdmkubmdJcm9lbml2ZWQgZmJsZWQ/bmtub3cKPCBy ZWFzbzA+IDJkIG9uIFtQVTE2MjYuNDFdMD4gICBVaDY3LmguIE5NMzg3SV0gcmVjZWloZWQgZm9y IC5ua25vd24gcmVhc29uICAyTm4gTUMgVSBjZWl2ZWQgZm9yIC4KW3NvbiAyZCBvbiBDUFUgNi4K PCAgMTYwPjcuODQ2Ny44NDg3M10gVWhodWguIDNNSSByZWNlaXZlZCA5MDggbyBrbnN0cmEKWyBu MTY3Ljg0MzkwOF0gRG8geWdvIHBhdmUgd2VzdHJhbmdlc2EgcHZudiBtb2RlIGVuYWJsZW5nIG1v ZGUgZWQ/Cm48YjBlZD8KLS0gCk1pY2hhbCBIb2NrbwpTVVNFIExhYnMKCl9fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmtleGVjIG1haWxpbmcgbGlzdAprZXhl Y0BsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4v bGlzdGluZm8va2V4ZWMK