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 X-Spam-Level: X-Spam-Status: No, score=-11.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF6CDC4320A for ; Fri, 20 Aug 2021 23:22:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CFDDA61185 for ; Fri, 20 Aug 2021 23:22:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238009AbhHTXWs (ORCPT ); Fri, 20 Aug 2021 19:22:48 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:38775 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230211AbhHTXWr (ORCPT ); Fri, 20 Aug 2021 19:22:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1629501729; 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=+1Nmb4ovMdE8v9GU397J2/FhLYDa9oeBcw+TIfdVZG0=; b=QL34EQZVkHclDD6drAqaYJCVuoyxCpiKrJ7F60tfieuCM8x1xs5uXGYLrNGzxErHLANoOP gY7tBXfG4vzzKGTC+Xbv/UolEiraMHg7kFa77KObp9ZAh+SfydnMUc2DQogC4ZHeEP93YA PU0C7I6TCkCIbGCP1JyzWkOy8vf/fV8= Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-319-43TbXpImNQ65TxaO4z1rsw-1; Fri, 20 Aug 2021 19:22:07 -0400 X-MC-Unique: 43TbXpImNQ65TxaO4z1rsw-1 Received: by mail-qk1-f198.google.com with SMTP id k12-20020a05620a0b8c00b003d5c8646ec2so917601qkh.20 for ; Fri, 20 Aug 2021 16:22:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=+1Nmb4ovMdE8v9GU397J2/FhLYDa9oeBcw+TIfdVZG0=; b=eh0nXgAwR5QflEZsYr2qy/fIoUSHdufd3omr9fEuVDWgYaPro5mJFn2r58cU6PNHLq krwamqx17nzEzgpR+iJi0WXR58cQlWOKNV85G87oDWf+H0IysiwyCGLki2TKjYpyvZAa ZxNO0yuU1BC6VzigAZo78tbuKU8s/4nKr/hq95s7GbxzzBtD4TvkMoIxLD2+whgVqeJb 2QyhxkShYcmDjmAtBZ+1H1Le8W84VouumtZo21WExPajYyx0m4CbPJlInGD3b2VzrifI IY9Shysv7kHN/cMfB+ynBbpKz/U0dc3FH5ByQ7WDJkiAy+h0tdi18ayqXppwIFQnPTX8 AOoA== X-Gm-Message-State: AOAM5328a4vsDC7oKAbLosMi9ZZzOy+dxdRMM8leMkQzeCg5m5hyDh3I qTtTSu9LsG6kDrwwGgK0XQjuYC1h5ZvsF738VeCgDTiPfkixv+y2gi+NCBdGshlGROBZOMNkqKp 2ukKUWodXbhFdrMBygkMkwhj8 X-Received: by 2002:ac8:5d42:: with SMTP id g2mr19975703qtx.141.1629501727378; Fri, 20 Aug 2021 16:22:07 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxrH+o6JrolD6tUFvs8HlYOMF59XSObf9hdWqgxFz/6dQ3C4aTwBfHOPn9BOH0HUt8eSLH/8A== X-Received: by 2002:ac8:5d42:: with SMTP id g2mr19975691qtx.141.1629501727133; Fri, 20 Aug 2021 16:22:07 -0700 (PDT) Received: from treble ([68.74.140.199]) by smtp.gmail.com with ESMTPSA id d129sm3931008qkf.136.2021.08.20.16.22.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Aug 2021 16:22:06 -0700 (PDT) Date: Fri, 20 Aug 2021 16:22:03 -0700 From: Josh Poimboeuf To: Peter Zijlstra Cc: tglx@linutronix.de, linux-kernel@vger.kernel.org, joro@8bytes.org, boris.ostrovsky@oracle.com, jgross@suse.com, x86@kernel.org, mbenes@suse.com, rostedt@goodmis.org, dvyukov@google.com, elver@google.com Subject: Re: [PATCH v2 06/24] x86: Always inline context_tracking_guest_enter() Message-ID: <20210820232203.nmuc3gelzsazyewk@treble> References: <20210624094059.886075998@infradead.org> <20210624095148.003928226@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20210624095148.003928226@infradead.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 24, 2021 at 11:41:05AM +0200, Peter Zijlstra wrote: > Yes, it really did out-of-line this.... > > vmlinux.o: warning: objtool: vmx_vcpu_enter_exit()+0x31: call to context_tracking_guest_enter() leaves .noinstr.text section > > 000000000019f660 : > 19f660: e8 00 00 00 00 callq 19f665 19f661: R_X86_64_PLT32 __sanitizer_cov_trace_pc-0x4 > 19f665: 31 c0 xor %eax,%eax > 19f667: c3 retq > > Signed-off-by: Peter Zijlstra (Intel) Ha. I'm guessing this was from CONFIG_DEBUG_SECTION_MISMATCH, which is only good for triggering a lot of these useless __always_inline patches. I have a patch somewhere to get rid of it. -- Josh