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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A75A6C433F5 for ; Fri, 4 Mar 2022 19:00:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231231AbiCDTAt (ORCPT ); Fri, 4 Mar 2022 14:00:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230099AbiCDTAr (ORCPT ); Fri, 4 Mar 2022 14:00:47 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id A8DF31DA02F for ; Fri, 4 Mar 2022 10:59:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1646420398; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=tkzg1TSy5gMBjY2PPKFis3+6O/dOxCM8DLBfyFgkSMw=; b=NZJyKfrEHDC3pf9N4KBnRxgSHYr402QoKmdmbWxpfsImTg56SjiutRh/n5aqT+CYq9eqCU 3+EC36AB1NCnEouJGH0RYa+/FxvEpu+qqjjEr6sUq8jQ44mjsB0H9kwMSi5yv9e3BDcfTc 2aoRb4CX6tEPBDRFC/aml7gQfTm4UTo= Received: from mail-qt1-f199.google.com (mail-qt1-f199.google.com [209.85.160.199]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-308-d1-8id0EMKOInV4lbOl7ng-1; Fri, 04 Mar 2022 13:59:57 -0500 X-MC-Unique: d1-8id0EMKOInV4lbOl7ng-1 Received: by mail-qt1-f199.google.com with SMTP id t14-20020ac8760e000000b002e049ff9638so3385116qtq.10 for ; Fri, 04 Mar 2022 10:59:57 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=tkzg1TSy5gMBjY2PPKFis3+6O/dOxCM8DLBfyFgkSMw=; b=nPLHOr/V6/hjO9FWIi243NYLRCF1jxq/OFHEoFMoEN128AcdPoj6OBtlt7WIIBLRB3 czg8SCGWRhe1RoJamsxm99KVva0McoFzHXOJRzis77VtkTHpGrJit4IinHV8uLRDaRdg i7K3T4MWKrlzpuEkJmYKKrfZ+OMWFe8+CiEdjcTFd7Z72gzcNKRsyg/Z93RjF3PL46mR mL/YAmGQcJkZw88sQBIl1T0/WXF2Z1BOwI/XQp7PSr7spUme4RlCKh2QwInLhm0koCpH SqgddszeZJXXokcVCa3+9txTZ0iOf+3nknRv2z6jKd1XGZalONgZO1VVq5ahFsBbdv4x nlmA== X-Gm-Message-State: AOAM532KcD85nuOLIoQ1tbVZ35VZzdTx5umccu90fa6YANgtrxG7VALv Fw8sRWxe4evqJRCd0rzZhrmXNVmzedgYqJRhh4VVSlW3ptoJ97tWIZfzYMQfu5FHIkErW1yGz08 o3oKyZJNH9nCNBWNIxgVI8Jfi X-Received: by 2002:a05:622a:1352:b0:2de:5c99:d990 with SMTP id w18-20020a05622a135200b002de5c99d990mr108913qtk.413.1646420397158; Fri, 04 Mar 2022 10:59:57 -0800 (PST) X-Google-Smtp-Source: ABdhPJwDmaOMoNLVkhy1oeJ4feLTKWu9dIWaO4GUYIWIJ4OquC4tQQYBFtKUYxGZwTk/DMukXOOGjQ== X-Received: by 2002:a05:622a:1352:b0:2de:5c99:d990 with SMTP id w18-20020a05622a135200b002de5c99d990mr108895qtk.413.1646420396893; Fri, 04 Mar 2022 10:59:56 -0800 (PST) Received: from treble ([2600:1700:6e32:6c00::45]) by smtp.gmail.com with ESMTPSA id c7-20020ac85a87000000b002dff4c183ecsm4034367qtc.29.2022.03.04.10.59.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Mar 2022 10:59:56 -0800 (PST) Date: Fri, 4 Mar 2022 10:59:53 -0800 From: Josh Poimboeuf To: Peter Zijlstra Cc: x86@kernel.org, joao@overdrivepizza.com, hjl.tools@gmail.com, andrew.cooper3@citrix.com, linux-kernel@vger.kernel.org, ndesaulniers@google.com, keescook@chromium.org, samitolvanen@google.com, mark.rutland@arm.com, alyssa.milburn@intel.com, mbenes@suse.cz, rostedt@goodmis.org, mhiramat@kernel.org, alexei.starovoitov@gmail.com Subject: Re: [PATCH v3 05/39] x86/ibt: Add ANNOTATE_NOENDBR Message-ID: <20220304185953.pom5at6roevsmm2w@treble> References: <20220303112321.422525803@infradead.org> <20220303112825.251775688@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220303112825.251775688@infradead.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Mar 03, 2022 at 12:23:26PM +0100, Peter Zijlstra wrote: > In order to have objtool warn about code references to !ENDBR > instruction, we need an annotation to allow this for non-control-flow > instances -- consider text range checks, text patching, or return > trampolines etc. > > Signed-off-by: Peter Zijlstra (Intel) > Reviewed-by: Kees Cook > --- > include/linux/objtool.h | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) Also needs copied over to tools/include/linux/objtool.h to avoid the sync warning. -- Josh