From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 05D29171B6 for ; Thu, 11 Apr 2024 16:50:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712854202; cv=none; b=iQdOdeo1OYR3funLWOPD+YZyLS/06gzJZxjYPn/F2EflcyW0KW0U4QV4EiuwtiOS+B21yTud6jpL2WpAqPzG3wyPJd6fnoDtjF3UrVZ1gBMUCbty+BQaqGhw6z7/UoGoVk09jerrQzI5L1Sx33OHdDMf/mMCwILJ4ZU6bv5QVDo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712854202; c=relaxed/simple; bh=QvtatgeOuMyYkq8lWFRExh/VSfBIfbc9tecb7cykvcc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=jm00hQKoqusyto524dKlLcrv9h6EgEAEfm08PB2j3BhSq4AgQmWZjH9xjoSNqy602R80FW7DuGxgpFWzEpuD3FPKQOo49fswqhtrdHwDHwdp4Y2x7iwm3qgfSWST+GNp01BPsPv6FitHp1IG4iSBjn9xGTT5QFnuMWpNZ73BVSk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=ZaV4GTWG; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="ZaV4GTWG" Received: from [100.64.216.186] (unknown [20.29.225.195]) by linux.microsoft.com (Postfix) with ESMTPSA id 67D4F20EB6ED; Thu, 11 Apr 2024 09:50:00 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 67D4F20EB6ED DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1712854200; bh=SruCmoGVxFxMCpcxT/E0JKUQScXTOnhv9UUPX/u53dY=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ZaV4GTWGMHX6ryDpBiCMqWK26DjHx/Rj2joG4SoFvMBxQzZDGAxNTKe/2K5Rwo7Jk z4Og5rlaRKccJR9ksXVQhEIrhdtMG6xtHRn+qOsHzFN5B8spamDCRyxHj99EBa6blb o3uNPk118Y1iVLGLDzk2zol4azddu/9GpZ+89C88= Message-ID: <97d25ef7-dee9-4cc5-842a-273f565869b3@linux.microsoft.com> Date: Thu, 11 Apr 2024 09:49:59 -0700 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 6.8 102/399] ACPI: CPPC: Use access_width over bit_width for system memory accesses To: Greg Kroah-Hartman Cc: stable@vger.kernel.org, patches@lists.linux.dev, Jarred White , "Rafael J. Wysocki" , Sasha Levin , Vanshidhar Konda References: <20240401152549.131030308@linuxfoundation.org> <20240401152552.230440447@linuxfoundation.org> <4fabd250-bfa8-4482-b2f2-b787844aeb0b@linux.microsoft.com> <2024040235-clutter-pushing-01e2@gregkh> Content-Language: en-CA From: Easwar Hariharan In-Reply-To: <2024040235-clutter-pushing-01e2@gregkh> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi stable team, On 4/2/2024 12:55 AM, Greg Kroah-Hartman wrote: > On Mon, Apr 01, 2024 at 10:16:46AM -0700, Easwar Hariharan wrote: >> On 4/1/2024 8:41 AM, Greg Kroah-Hartman wrote: >>> 6.8-stable review patch. If anyone has any objections, please let me know. >>> >>> ------------------ >>> >>> From: Jarred White >>> >>> [ Upstream commit 2f4a4d63a193be6fd530d180bb13c3592052904c ] >>> >>> To align with ACPI 6.3+, since bit_width can be any 8-bit value, it >>> cannot be depended on to be always on a clean 8b boundary. This was >>> uncovered on the Cobalt 100 platform. >>> >> >> Hi Greg, >> >> Please drop this patch from all stable kernels as we seem to have a regression reported >> on AmpereOne systems: https://lore.kernel.org/all/20240329220054.1205596-1-vanshikonda@os.amperecomputing.com/ > > Ok, all now dropped. Please let us know when the fix gets into Linus's > tree (and also properly tag it for stable inclusion as it is fixing a > commit that was tagged for stable inclusion.) > > thanks, > > greg k-h Despite having dropped the backport of this patch from all stable kernels, the 5.15 backport seems to have snuck through. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=4949affd5288b867cdf115f5b08d6166b2027f87 Both the regression fix for AmpereOne[1] and a fix for another bug[2] we found while testing haven't been accepted into Linus' tree yet, so 5.15.154 has a known issue. Please revert this for 5.15.155 and I'll send an email when the full set is in Linus' tree. Thanks, Easwar [1] https://lore.kernel.org/all/20240329220054.1205596-1-vanshikonda@os.amperecomputing.com/ [2] https://lore.kernel.org/all/20240409052310.3162495-1-jarredwhite@linux.microsoft.com/