From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 320772741B9; Fri, 18 Apr 2025 12:11:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744978308; cv=none; b=MuDSsU4srqsC9nrOrjdTUy9pBJujspPL7ArDca1gfMiouTh2mjuWTOwoaXpZROD4+Y3sn5EuDDvqLmpDidw4mEWMRALL6HgQKs0QnqPgFxHOaNMgzHtgn0cBOP0GC2nsRqzebsdhy93wxWUo0+h29FsWQfv5F9PEOhnjj+IP6yA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744978308; c=relaxed/simple; bh=i1GAHaPRubCG+Ok7kknHanKt2FeoM7pX/uRadDM54Ik=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=fQy7I56xH3yeAyJOv7Mhs7+9gsg4kyeE5992/l7tQgra3WsQdv3Of+elcOBYz16cShF4d14VH8taESxWskpHbx3ypqnPXmltKUVju7q4f8hbAcTbojjqmOanOKkf5AkEDRqx4L3VqUzkCgxx7z0WfHuBG0uEnrnKywuK5qUL1bI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nl6XTcIC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nl6XTcIC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82647C4CEE2; Fri, 18 Apr 2025 12:11:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744978307; bh=i1GAHaPRubCG+Ok7kknHanKt2FeoM7pX/uRadDM54Ik=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nl6XTcICYGhT6VhVHA+Yn+C+X9+gT+2Jv4FxrWuA/NW7mrkhQmEoMblCOy9tHKR1L YVhOXXm+zJOunbrfyObtpbkiT9Xc2EolZrkYGNSg+gzeqoFhBStwcw4KxHnLSYDfkw I4RYO6ZeOy3ZisYtMejKZ2EJY68gbb/4fqH6zXf9LYP+RqL0rgzdwJb4fOKV7b+b2g SIVDPEign+sgyySIIM7I90qhgLz4tfJKdVTHKT485TePajyW/xaYOWQQiOhwyBmmbz T4GPRiXrqWN0O8xlSCV763yTjP34byu2/P55+q6+wH4y/GfoPss9LlUs8B5JpCnR8d d8DUI121wa33Q== Date: Fri, 18 Apr 2025 14:11:44 +0200 From: Ingo Molnar To: Borislav Petkov Cc: linux-kernel@vger.kernel.org, linux-tip-commits@vger.kernel.org, Sandipan Das , x86@kernel.org Subject: Re: [tip: x86/urgent] x86/cpu/amd: Fix workaround for erratum 1054 Message-ID: References: <174495817953.31282.5641497960291856424.tip-bot2@tip-bot2> <20250418104013.GAaAIsDW2skB12L-nm@renoirsky.local> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250418104013.GAaAIsDW2skB12L-nm@renoirsky.local> * Borislav Petkov wrote: > > Fixes: 232afb557835 ("x86/CPU/AMD: Add X86_FEATURE_ZEN1") > > Signed-off-by: Sandipan Das > > Signed-off-by: Ingo Molnar > > Link: https://lore.kernel.org/r/caa057a9d6f8ad579e2f1abaa71efbd5bd4eaf6d.1744956467.git.sandipan.das@amd.com > > This needs > > Cc: No, it doesn't really 'need' a stable tag, it has a Fixes tag already, which gets processed by the -stable team. Also, the bug is old, 1.5 years old: Date: Sat, 2 Dec 2023 12:50:23 +0100 plus the erratum is a perf-counters information quality bug affecting what appears to be a limited number of models, with the workaround likely incorporated in BIOS updates as well. Leave it up to the -stable team whether they think it's severe enough to backport it? Thanks, Ingo