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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA0D7C433F5 for ; Tue, 26 Oct 2021 02:42:50 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 8CA116109E for ; Tue, 26 Oct 2021 02:42:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8CA116109E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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:MIME-Version:References:In-Reply-To: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7Nio4Skpm81YjFmbHfBE9Xev2exhkP9RjOBD+VMKVpM=; b=giVHiEr4HPCJ6Z ED/Cmmz+EKTR2XBlREdNPZsAfomNjVIKZx3rnGsV/wPkvdgNgt9k1PEYj9bIZUU8/xF5tG1s1sGwq xZZuy8NPT3S39WNOhcklm7WZwv07NhA72NZMorYysNysAjwLxqukuHzbQmFI9H9KnLkokrnLkxFp8 JwgYCP1aZyxVEY/kX08PpvmvA7ctsPX3xLtGXQ+IoYdNWFfn17RB64KMnEjbN+DdrioeKcFjeRhr6 dpiwKTXkTDJiGdrE6d4YqGZAT3OS51yoFjP/9FwEkBpbMJ2V52LciUTVUYp2UoPxNJpbnKFl4cZFp vU+Q4mNn6hr7ARNH3uCg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mfCQD-000UrX-Ew; Tue, 26 Oct 2021 02:42:41 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mfCQ9-000UqZ-RW for linux-riscv@lists.infradead.org; Tue, 26 Oct 2021 02:42:39 +0000 Received: from rorschach.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E000861074; Tue, 26 Oct 2021 02:42:34 +0000 (UTC) Date: Mon, 25 Oct 2021 22:42:33 -0400 From: Steven Rostedt To: =?UTF-8?B?546L6LSH?= Cc: Guo Ren , Ingo Molnar , "James E.J. Bottomley" , Helge Deller , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Paul Walmsley , Palmer Dabbelt , Albert Ou , Thomas Gleixner , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Josh Poimboeuf , Jiri Kosina , Miroslav Benes , Petr Mladek , Joe Lawrence , Colin Ian King , Masami Hiramatsu , "Peter Zijlstra (Intel)" , Nicholas Piggin , Jisheng Zhang , linux-csky@vger.kernel.org, linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, live-patching@vger.kernel.org Subject: Re: [PATCH v4 0/2] fix & prevent the missing preemption disabling Message-ID: <20211025224233.61b8e088@rorschach.local.home> In-Reply-To: <71c21f78-9c44-fdb2-f8e2-d8544b3421bd@linux.alibaba.com> References: <32a36348-69ee-6464-390c-3a8d6e9d2b53@linux.alibaba.com> <71c21f78-9c44-fdb2-f8e2-d8544b3421bd@linux.alibaba.com> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211025_194237_935961_72B22C4E X-CRM114-Status: GOOD ( 17.92 ) X-BeenThere: linux-riscv@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: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org T24gVHVlLCAyNiBPY3QgMjAyMSAxMDowOToxMiArMDgwMArnjovotIcgPHl1bi53YW5nQGxpbnV4 LmFsaWJhYmEuY29tPiB3cm90ZToKCj4gSnVzdCBhIHBpbmcsIHRvIHNlZSBpZiB0aGVyZSBhcmUg YW55IG1vcmUgY29tbWVudHMgOi1QCgpJIGd1ZXNzIHlvdSBtaXNzZWQgd2hhdCB3ZW50IGludG8g bWFpbmxpbmUgKGFuZCB5b3VyIG5hbWUgZm91bmQgYSBidWcKaW4gbXkgcGVybCBzY3JpcHQgZm9y IGltcG9ydGluZyBwYXRjaGVzIDstKQoKICBodHRwczovL2xvcmUua2VybmVsLm9yZy9hbGwvMjAy MTEwMTkwOTEzNDQuNjU2MjkxOThAZ2FuZGFsZi5sb2NhbC5ob21lLwoKV2hpY2ggbWVhbnMgcGF0 Y2ggMSBuZWVkcyB0byBjaGFuZ2U6Cgo+ICsJLyoKPiArCSAqIERpc2FibGUgcHJlZW1wdGlvbiB0 byBmdWxmaWxsIHRoZSBwcm9taXNlLgo+ICsJICoKPiArCSAqIERvbid0IHdvcnJ5IGFib3V0IHRo ZSBiaXQgMCBjYXNlcywgdGhleSBpbmRpY2F0ZQo+ICsJICogdGhlIGRpc2FibGluZyBiZWhhdmlv dXIgaGFzIGFscmVhZHkgYmVlbiBkb25lIGJ5Cj4gKwkgKiBpbnRlcm5hbCBjYWxsIHByZXZpb3Vz bHkuCj4gKwkgKi8KPiArCXByZWVtcHRfZGlzYWJsZV9ub3RyYWNlKCk7Cj4gKwo+ICAJcmV0dXJu IGJpdCArIDE7Cj4gIH0KPiAKPiArLyoKPiArICogUHJlZW1wdGlvbiB3aWxsIGJlIGVuYWJsZWQg KGlmIGl0IHdhcyBwcmV2aW91c2x5IGVuYWJsZWQpLgo+ICsgKi8KPiAgc3RhdGljIF9fYWx3YXlz X2lubGluZSB2b2lkIHRyYWNlX2NsZWFyX3JlY3Vyc2lvbihpbnQgYml0KQo+ICB7Cj4gIAlpZiAo IWJpdCkKPiAgCQlyZXR1cm47Cj4gCj4gKwlpZiAoYml0ID4gMCkKPiArCQlwcmVlbXB0X2VuYWJs ZV9ub3RyYWNlKCk7Cj4gKwoKV2hlcmUgdGhpcyB3b250IHdvcmsgYW55bW9yZS4KCk5lZWQgdG8g cHJlZW1wdCBkaXNhYmxlIGFuZCBlbmFibGUgYWx3YXlzLgoKLS0gU3RldmUKCgo+ICAJYmFycmll cigpOwo+ICAJYml0LS07Cj4gIAl0cmFjZV9yZWN1cnNpb25fY2xlYXIoYml0KTsKPiBAQCAtMjA5 LDcgKzIyNyw3IEBAIHN0YXRpYyBfX2Fsd2F5c19pbmxpbmUgdm9pZCB0cmFjZV9jbGVhcl9yZWN1 cnNpb24oaW50IGJpdCkKPiAgICogdHJhY2luZyByZWN1cnNlZCBpbiB0aGUgc2FtZSBjb250ZXh0 IChub3JtYWwgdnMgaW50ZXJydXB0KSwKPiAgICoKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2IG1haWxpbmcgbGlzdApsaW51eC1yaXNj dkBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4v bGlzdGluZm8vbGludXgtcmlzY3YK