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 E2C91E95A91 for ; Mon, 9 Oct 2023 15:31:10 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Subject:MIME-Version:Message-ID: In-Reply-To:Date:References:Cc:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=tYXjU/CU6MyXQT+foX3rKG+N5Ph5MtVTjEJQjFp4kaU=; b=RXbrs+yx/7+j6kCTv33EfFaV6B MyFiG1mPWR2Vuucz9kmy6oQ29iB2ogRLmzFQpa+JiKPt/HCCWkrASKR9TaJwzQzTmcUyUTUNLTFXn zxCv3aJdcJ5zZrS8Uv2Te8wuOXh9XrxMBIN626ShniVWS1BxRdrlFNKWHrTwVQRPj4KFdoYQfruzB E9l6Hrb3HVUeXl4dETKDV7C0KlBonacle44oYoSQjmORsMxcviKykEkKu5nG8enJxtHLA4mNiPfsX ANxVYjSYWyskJ6PoCOG4gx4TbOxv/5jVdFBrZEaxrRRIL1pEBfQvXFr/qrdCMkGFTx+xMvnJY/OMm 7GHWuoTQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qpsDr-00B3eS-2L; Mon, 09 Oct 2023 15:31:07 +0000 Received: from out01.mta.xmission.com ([166.70.13.231]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qpsDp-00B3cA-0S for kexec@lists.infradead.org; Mon, 09 Oct 2023 15:31:06 +0000 Received: from in01.mta.xmission.com ([166.70.13.51]:38198) by out01.mta.xmission.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1qpsDU-0060Yb-3i; Mon, 09 Oct 2023 09:30:44 -0600 Received: from ip68-227-168-167.om.om.cox.net ([68.227.168.167]:38624 helo=email.froward.int.ebiederm.org.xmission.com) by in01.mta.xmission.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1qpsDQ-007a4Q-RL; Mon, 09 Oct 2023 09:30:43 -0600 From: "Eric W. Biederman" To: Joel Fernandes Cc: linux-kernel@vger.kernel.org, Steven Rostedt , Ricardo Ribalda , Ross Zwisler , Rob Clark , Linus Torvalds , kexec@lists.infradead.org References: <20230929021213.2364883-1-joel@joelfernandes.org> <87bkdl55qm.fsf@email.froward.int.ebiederm.org> Date: Mon, 09 Oct 2023 10:21:04 -0500 In-Reply-To: (Joel Fernandes's message of "Sat, 7 Oct 2023 21:30:42 -0400") Message-ID: <87il7fzusf.fsf@email.froward.int.ebiederm.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 X-XM-SPF: eid=1qpsDQ-007a4Q-RL;;;mid=<87il7fzusf.fsf@email.froward.int.ebiederm.org>;;;hst=in01.mta.xmission.com;;;ip=68.227.168.167;;;frm=ebiederm@xmission.com;;;spf=pass X-XM-AID: U2FsdGVkX1/05uh69me2MdpVapboGWSZ9mJiUasho74= X-SA-Exim-Connect-IP: 68.227.168.167 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: Re: [PATCH] kexec: Fix reboot race during device_shutdown() X-SA-Exim-Version: 4.2.1 (built Sat, 08 Feb 2020 21:53:50 +0000) X-SA-Exim-Scanned: Yes (on in01.mta.xmission.com) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231009_083105_177784_5C7A7B79 X-CRM114-Status: GOOD ( 20.47 ) 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org Sm9lbCBGZXJuYW5kZXMgPGpvZWxAam9lbGZlcm5hbmRlcy5vcmc+IHdyaXRlczoKCj4gT24gTW9u LCBPY3QgMiwgMjAyMyBhdCAyOjE44oCvUE0gSm9lbCBGZXJuYW5kZXMgPGpvZWxAam9lbGZlcm5h bmRlcy5vcmc+IHdyb3RlOgo+IFsuLl0KPj4gPiA+IFN1Y2ggZnJlZXppbmcgaXMgYWxyZWFkeSBi ZWluZyBkb25lIGlmIGtlcm5lbCBzdXBwb3J0cyBLRVhFQ19KVU1QIGFuZAo+PiA+ID4ga2V4ZWNf aW1hZ2UtPnByZXNlcnZlX2NvbnRleHQgaXMgdHJ1ZS4gSG93ZXZlciwgZG9pbmcgaXQgaWYgZWl0 aGVyIG9mIHRoZXNlIGFyZQo+PiA+ID4gbm90IHRydWUgcHJldmVudHMgY3Jhc2hlcy9yYWNlcy4K Pj4gPgo+PiA+IFRoZSBLRVhFQ19KVU1QIGNhc2UgaXMgc29tZXRoaW5nIGVsc2UgZW50aXJlbHku ICBJdCBpcyBzdXBwb3NlZCB0byB3b3JrCj4+ID4gbGlrZSBzdXNwZW5kIHRvIFJBTS4gIE1heWJl IHJlYm9vdCBzaG91bGQgYXMgd2VsbCwgYnV0IEkgYW0KPj4gPiB1bmNvbWZvcnRhYmxlIG1ha2lu ZyBhIGdlbmVyaWMgZGV2aWNlIGZpeCBrZXhlYyBzcGVjaWZpYy4KPj4KPj4gSSBzZWUgeW91ciBw b2ludCBvZiB2aWV3LiBJIHRoaW5rIHJlZ3VsYXIgcmVib290IHNob3VsZCBhbHNvIGJlIGZpeGVk Cj4+IHRvIGF2b2lkIHNpbWlsYXIgY3Jhc2ggcG9zc2liaWxpdGllcy4gSSBhbSBoYXBweSB0byBt YWtlIGEgY2hhbmdlIGZvcgo+PiB0aGF0IHNpbWlsYXIgdG8gdGhpcyBwYXRjaCBpZiB3ZSB3YW50 IHRvIHByb2NlZWQgdGhhdCB3YXkuCj4+Cj4+IFRob3VnaHRzPwo+Cj4gSnVzdCBjaGVja2luZyBo b3cgd2Ugd2FudCB0byBwcm9jZWVkLCBpcyB0aGUgY29uc2Vuc3VzIHRoYXQgd2Ugc2hvdWxkCj4g cHJldmVudCBrZXJuZWwgY3Jhc2hlcyB3aXRob3V0IHJlbHlpbmcgb24gdXNlcnNwYWNlIHN0b3Bw aW5nIGFsbAo+IHByb2Nlc3Nlcz8gU2hvdWxkIHdlIGZpeCByZWd1bGFyIHJlYm9vdCBzeXNjYWxs IGFzIHdlbGwgYW5kIG5vdCBqdXN0Cj4ga2V4ZWMgcmVib290PwoKSXQganVzdCBvY2N1cnJlZCB0 byBtZSB0aGVyZSBpcyBzb21ldGhpbmcgdmVyeSBmaXNoeSBhYm91dCBhbGwgb2YgdGhpcy4KCldo YXQgdXNlcnNwYWNlIGRvIHlvdSBoYXZlIHVzaW5nIGtleGVjIChub3Qga2V4ZWMgb24gcGFuaWMp IHRoYXQgZG9lc24ndApwcmVmb3JtIHRoZSBzYW1lIHVzZXJzcGFjZSBzaHV0ZG93biBhcyBhIG5v cm1hbCByZWJvb3Q/CgpRdWl0ZSBmcmFua2x5IHN1Y2ggYSB1c2Vyc3BhY2UgaXMgYnVnZ3ksIGFu ZCBhcmd1YWJseSB0aGF0IGlzIHdoZXJlIHlvdQpzaG91bGQgc3RhcnQgZml4aW5nIHRoaW5ncy4g IFRoYXQgd2F5IHlvdSBjYW4gZ2V0IHRoZSBvcmRlcmx5IHNodXRkb3duCm9mIHVzZXJzcGFjZSBk YWVtb25zL3NlcnZpY2VzIGFsb25nIHdpdGggYW4gb3JkZXJseSBzaHV0ZG93biBvZgpldmVyeXRo aW5nIHRoZSBrZXJuZWwgaXMgcmVzcG9uc2libGUgZm9yLgoKQXQgdGhlIGtlcm5lbCBsZXZlbCBh IGtleGVjIHJlYm9vdCBhbmQgYSBub3JtYWwgcmVib290IGhhdmUgYmVlbgpkZWxpYmVyYXRlbHkg a2VwdCBhcyBjbG9zZSBhcyBwb3NzaWJsZS4gIFdoaWNoIGlzIHdoeSBJIHNheSB3ZSBzaG91bGQK Zml4IGl0IGluIHJlYm9vdC4KCkVyaWMKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCmtleGVjIG1haWxpbmcgbGlzdAprZXhlY0BsaXN0cy5pbmZyYWRlYWQu b3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8va2V4ZWMK