From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wi0-f172.google.com ([209.85.212.172]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZKMeZ-0007NG-28 for kexec@lists.infradead.org; Wed, 29 Jul 2015 08:23:55 +0000 Received: by wibxm9 with SMTP id xm9so15006476wib.1 for ; Wed, 29 Jul 2015 01:23:32 -0700 (PDT) Date: Wed, 29 Jul 2015 10:23:30 +0200 From: Michal Hocko Subject: Re: Re: [V2 PATCH 1/3] x86/panic: Fix re-entrance problem due to panic on NMI Message-ID: <20150729082329.GA15801@dhcp22.suse.cz> References: <20150727015850.4928.87717.stgit@softrs> <20150727015850.4928.50289.stgit@softrs> <20150727143405.GF11317@dhcp22.suse.cz> <55B6E2A3.8070004@hitachi.com> <04EAB7311EE43145B2D3536183D1A8445491D5E8@GSjpTKYDCembx31.service.hitachi.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <04EAB7311EE43145B2D3536183D1A8445491D5E8@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 T24gV2VkIDI5LTA3LTE1IDA1OjQ4OjQ3LCDmsrPlkIjoi7Hlro8gLyBLQVdBSe+8jEhJREVISVJP IHdyb3RlOgo+IEhpLAo+IAo+ID4gRnJvbTogbGludXgta2VybmVsLW93bmVyQHZnZXIua2VybmVs Lm9yZyBbbWFpbHRvOmxpbnV4LWtlcm5lbC1vd25lckB2Z2VyLmtlcm5lbC5vcmddIE9uIEJlaGFs ZiBPZiBIaWRlaGlybyBLYXdhaQo+ID4gKDIwMTUvMDcvMjcgMjM6MzQpLCBNaWNoYWwgSG9ja28g d3JvdGU6Cj4gPiA+IE9uIE1vbiAyNy0wNy0xNSAxMDo1ODo1MCwgSGlkZWhpcm8gS2F3YWkgd3Jv dGU6Cj4gWy4uLl0KPiA+ID4gVGhlIGNoZWNrIGNvdWxkIGJlIGFsc28gcmVsYXhlZCBhIGJpdCBh bmQgbm1pX3BhbmljIHdvdWxkCj4gPiA+IHJldHVybiBvbmx5IGlmIHRoZSBvbmdvaW5nIHBhbmlj IGlzIHRoZSBjdXJyZW50IGNwdSB3aGVuIHdlIHJlYWxseSBoYXZlCj4gPiA+IHRvIHJldHVybiBh bmQgYWxsb3cgdGhlIHByZWVtcHRlZCBwYW5pYyB0byBmaW5pc2guCj4gPiAKPiA+IEl0J3MgcmVh c29uYWJsZS4gIEknbGwgZG8gdGhhdCBpbiB0aGUgbmV4dCB2ZXJzaW9uLgo+IAo+IEkgbm90aWNl ZCBhdG9taWNfcmVhZCgpIGlzIGluc3VmZmljaWVudC4gIFBsZWFzZSBjb25zaWRlciB0aGUgZm9s bG93aW5nCj4gc2NlbmFyaW8uCj4gCj4gQ1BVIDE6IGNhbGwgcGFuaWMoKSBpbiB0aGUgbm9ybWFs IGNvbnRleHQKPiBDUFUgMDogY2FsbCBubWlfcGFuaWMoKSwgY2hlY2sgdGhlIHZhbHVlIG9mIHBh bmljX2NwdSwgdGhlbiBjYWxsIHBhbmljKCkKPiBDUFUgMTogc2V0IDEgdG8gcGFuaWNfY3B1Cj4g Q1BVIDA6IGZhaWwgdG8gc2V0IDAgdG8gcGFuaWNfY3B1LCB0aGVuIGRvIGFuIGluZmluaXRlIGxv b3AKPiBDUFUgMTogY2FsbCBjcmFzaF9rZXhlYygpLCB0aGVuIGNhbGwga2R1bXBfbm1pX3Nob290 ZG93bl9jcHVzKCkKPiAKPiBBdCB0aGlzIHBvaW50LCBzaW5jZSBDUFUgMCBsb29wcyBpbiBOTUkg Y29udGV4dCwgaXQgbmV2ZXIgZXhlY3V0ZXMKPiB0aGUgTk1JIGhhbmRsZXIgcmVnaXN0ZXJlZCBi eSBrZHVtcF9ubWlfc2hvb3Rkb3duX2NwdXMoKS4gIFRoaXMgbWVhbnMKPiB0aGF0IG5vIHJlZ2lz dGVyIHN0YXRlcyBhcmUgc2F2ZWQgYW5kIG5vIGNsZWFudXBzIGZvciBWTVgvU1ZNIGFyZQo+IHBl cmZvcm1lZC4KClllcyB0aGlzIGlzIHRydWUgYnV0IGl0IGlzIG5vIGRpZmZlcmVudCBmcm9tIHRo ZSBjdXJyZW50IHN0YXRlLCBpc24ndAppdD8gU28gaWYgeW91IHdhbnQgdG8gaGFuZGxlIHRoYXQg dGhlbiBpdCBkZXNlcnZlcyBhIHNlcGFyYXRlIHBhdGNoLgpJdCBpcyBjZXJ0YWlubHkgbm90IGhh cm1mdWwgd3J0LiBwYW5pYyBiZWhhdmlvci4KCj4gU28sIHdlIHNob3VsZCBzdGlsbCB1c2UgYXRv bWljX2NtcHhjaGcoKSBpbiBubWlfcGFuaWMoKSB0bwo+IHByZXZlbnQgb3RoZXIgY3B1cyBmcm9t IHJ1bm5pbmcgcGFuaWMgcm91dGluZXMuCgpOb3Qgc3VyZSB3aGF0IHlvdSBtZWFuIGJ5IHRoYXQu CgotLSAKTWljaGFsIEhvY2tvClNVU0UgTGFicwoKX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18Ka2V4ZWMgbWFpbGluZyBsaXN0CmtleGVjQGxpc3RzLmluZnJh ZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9rZXhl Ywo=