From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3BB1DD40CE4 for ; Tue, 5 Nov 2024 22:58:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:References:Cc:To:From:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=z9k6uAq9lCoihNg6i8LRnIbmCJWfcUs0vzWZ0saxcYM=; b=fCsqtOq6a7UOzK 4XN2Zk1koKxjsz082wDQldFVk/U8z5ysCA5PMtSnN8lFu95/QQGLSbOHZUgWGQf+iXnR3Zu1/NDU2 q9IHTBtgCAKvkl63utTd0p52jcEeuWy4voebjksumA9dC1MQBS2qETReG5hhUoQfEGWNJe8PKmU3K 4gzmV1dho8ey41pKDIMiKM88ZmYLCZqHtdqHAxemUklxB9rj84vDE9rH33Cugj5bKyU5TONum5LdO ErN4SmeBVQ2LF0l55NusfUKL8e21k/2d/5S/3ssI0ZT6bXOckl8lzySi4staxiH6OQemmfmovOq6O eiDYChk0KNkyKtTrOncw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t8SUo-000000013eu-1jRP; Tue, 05 Nov 2024 22:57:58 +0000 Received: from torg.zytor.com ([2607:7c80:54:3::138] helo=mail.zytor.com) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t8SUl-000000013eV-05Rr for kexec@lists.infradead.org; Tue, 05 Nov 2024 22:57:56 +0000 Received: from [172.27.3.244] ([76.133.66.138]) (authenticated bits=0) by mail.zytor.com (8.18.1/8.17.1) with ESMTPSA id 4A5MvSdh424848 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NO); Tue, 5 Nov 2024 14:57:28 -0800 DKIM-Filter: OpenDKIM Filter v2.11.0 mail.zytor.com 4A5MvSdh424848 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2024101701; t=1730847450; bh=FxTpXSTQa9JsCRn1p6lVgcE0xkUvR08XuNrFIpNz3kg=; h=Date:Subject:From:To:Cc:References:In-Reply-To:From; b=eo6NVK9jCY9J0ahyD46pfe20rkRWwCv3gYYK9no9YYO75yZQwG0KXsDvzIlzn2t+Y sJsRzkedETZLV47rytFOOM+htDCKqVGHXUrvuaKISN3n3Tbjh3MSiN/3EdFV72eK+i dOvOCFw6qI9qW3GNFvN7zEBEChBaBeyWnd9ZyqpBX/Vbwn53ssIcrXuAeTXmGDfz3E 4SAyfFwmkoJaQ8Zxg9bFMu/MnsabftcqrbWeRaL4AyGEq0qaldV+4noXc6b+NoWYte F1HjHM2G7LkMlwUQwSC7rkmvFGbb2fVZMX91Ai+bnJ7padfBVs3nDL6yW8+B32J/te 9DvbzHydENhjQ== Message-ID: <3a91abd7-5edd-4f4e-bb15-fb9c91f64cc9@zytor.com> Date: Tue, 5 Nov 2024 14:57:28 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 6/7] x86/kexec: Debugging support: Dump registers on exception From: "H. Peter Anvin" To: "Woodhouse, David" , "peterz@infradead.org" , "kexec@lists.infradead.org" , "jpoimboe@kernel.org" Cc: "horms@kernel.org" , "x86@kernel.org" , "bp@alien8.de" , "mingo@redhat.com" , "tglx@linutronix.de" , "kai.huang@intel.com" , "linux-kernel@vger.kernel.org" , "kirill.shutemov@linux.intel.com" , "nik.borisov@suse.com" , "dave.hansen@linux.intel.com" References: <20241103054019.3795299-1-dwmw2@infradead.org> <20241103054019.3795299-7-dwmw2@infradead.org> <230aacb0ca0d57581f9350f96390933646f203e4.camel@amazon.co.uk> <88c01eea-9d0f-4cac-914b-50993cbbb3ce@zytor.com> Content-Language: en-US In-Reply-To: <88c01eea-9d0f-4cac-914b-50993cbbb3ce@zytor.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241105_145755_071662_CC985FC9 X-CRM114-Status: UNSURE ( 8.32 ) X-CRM114-Notice: Please train this message. X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org T24gMTEvNS8yNCAxNDoyNywgSC4gUGV0ZXIgQW52aW4gd3JvdGU6Cj4gCj4gSSBkb24ndCBrbm93 IGlmIGl0IGlzIG5lY2Vzc2FyeSwgYnV0IHlvdSBjYW4gZG8gc29tZXRoaW5nIGxpa2UgdGhpcyB0 byAKPiBtYWtlIGFic29sdXRlbHkgc3VyZSB5b3UgZG9uJ3QgZW5kIHVwIHdpdGggbm9uLXJlbGF0 aXZlIHN5bWJvbCByZWZlcmVuY2VzOgo+IAo+IHN0YXRpYyBpbmxpbmUgX19jb25zdGZ1bmMgdm9p ZCAqIHN5bV9hZGRyKGNvbnN0IHZvaWQgKnN5bSkKPiB7Cj4gIMKgwqDCoMKgdm9pZCAqYWRkcjsK PiAgwqDCoMKgwqBhc20oImxlYSAlYzEoJSVyaXApLCUwIiA6ICI9ciIgKGFkZHIpIDogImkiIChz eW0pKTsKPiAgwqDCoMKgwqByZXR1cm4gYWRkcjsKPiB9Cj4gCgpDb21waWxpbmcgd2l0aCAiLWZw aWMgLWZ2aXNpYmlsaXR5PWhpZGRlbiAtbWNtb2RlbD1tZWRpdW0iIGNhbiBhbHNvIGJlIAp1c2Vk IHRvIHN1cHByZXNzIG5vbi1yZWxhdGl2ZSByZWZlcmVuY2VzLiBJZiB5b3UgaGF2ZSBleHRlcm5h bCBzeW1ib2wgCnJlZmVyZW5jZXMgdGhleSBhdCBsZWFzdCAqc2hvdWxkKiBiZSBlbWl0dGVkIGFz IEdPVFBDUkVMWCByZWxvY2F0aW9ucyAKd2hpY2ggdGhlIGxpbmtlciBzaG91bGQgcmVsYXggdG8g cmVsYXRpdmUgcmVmZXJlbmNlczsgaG93ZXZlciwgSSB3b3VsZCAKdGhpbmsgdGhhdCB5b3UgcmVh bGx5IGRvbid0IHdhbnQgYW55IG9mIHRob3NlIDopCgoJLWhwYQoKCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmtleGVjIG1haWxpbmcgbGlzdAprZXhlY0Bs aXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlz dGluZm8va2V4ZWMK