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 DBCF91EF374; Fri, 28 Mar 2025 22:11:42 +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=1743199903; cv=none; b=aMhC/UgAKbtWtA7CAQe41QIqP46+VRUtfVC/Pf6rjayJaeHFSnRilKf7KU4yOg2iCGeJcmg+4VxC8MfpoT+0SFngI9Fpc7/IgSeWZLHNDjRXXxlUUsVZDtoVcQFBX6fQpHS0FXEHuJQcrgINGKYrbW95OhQim8JM1insbvCF5K0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743199903; c=relaxed/simple; bh=6ubRE10n/UOjIIs7EHR/cKNhb/utTvoMnslhTgiMcq0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=jotJMOA/4yCvg1i4e4VSDfy4ax/ARzBS+awac98LFt/B6oL5LgEnrCPxXAslgE8Tp/yfMAp6xyKusjESEYHic2UW9gBi033qnTlYkbCoSgS3lCHqI1VWlLTIhcg8Ys3JcbLdbp6q4WT6CbMqLFY69FSRuTsLpTlz3ZeDYysO+AQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mN3OTfT4; 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="mN3OTfT4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2834C4CEE4; Fri, 28 Mar 2025 22:11:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743199902; bh=6ubRE10n/UOjIIs7EHR/cKNhb/utTvoMnslhTgiMcq0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=mN3OTfT49h0Ybh65g9bQYoY4+eZPZbPc/Z7ElI2ITzwCQsxll3VIGR4HDZTFTVL26 Xghw5cefPEzKIpPILp2+TUBWJiBkhs9owQ3v8ULwqGSntffX/lYhY9N0i/7h2QpqT6 W0P2CpWSbG8bYfS3jv1TIu0J1UCXg8uyuA6CREmriWgY2H22x1tW76wKykSTy8GH/r VJWA3JHEftMjLsdvkpMLtQ8kKqlfdzvPdugnnp2GxVwSYeLIrKwU3tB0iDvf2UOqvi 62Y8SMq6G8DhS5oomTKSQ75NJGIxAX7YdLZjo9o2bvXXpROYbkMNey1yFD0/Wc59KD JPgtv+lVKm5YA== Date: Fri, 28 Mar 2025 23:11:38 +0100 From: Ingo Molnar To: linux-kernel@vger.kernel.org, Linus Torvalds Cc: linux-tip-commits@vger.kernel.org, Ondrej Lichtner , Linus Torvalds , "Herton R. Krzesinski" , x86@kernel.org Subject: Re: [tip: x86/urgent] x86/uaccess: Improve performance by aligning writes to 8 bytes in copy_user_generic(), on non-FSRM/ERMS CPUs Message-ID: References: <20250320142213.2623518-1-herton@redhat.com> <174319948654.14745.2953374115791547949.tip-bot2@tip-bot2> 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: <174319948654.14745.2953374115791547949.tip-bot2@tip-bot2> Linus, * tip-bot2 for Herton R. Krzesinski wrote: > The following commit has been merged into the x86/urgent branch of tip: > > Commit-ID: b5322b6ec06a6c58650f52abcd2492000396363b > Gitweb: https://git.kernel.org/tip/b5322b6ec06a6c58650f52abcd2492000396363b > Author: Herton R. Krzesinski > AuthorDate: Thu, 20 Mar 2025 11:22:13 -03:00 > Committer: Ingo Molnar > CommitterDate: Fri, 28 Mar 2025 22:57:44 +01:00 > > x86/uaccess: Improve performance by aligning writes to 8 bytes in copy_user_generic(), on non-FSRM/ERMS CPUs ... > [ mingo: Updated the changelog. ] > > Fixes: ca96b162bfd2 ("x86: bring back rep movsq for user access on CPUs without ERMS") > Fixes: 034ff37d3407 ("x86: rewrite '__copy_user_nocache' function") > Reported-by: Ondrej Lichtner > Co-developed-by: Linus Torvalds > Signed-off-by: Linus Torvalds > Signed-off-by: Herton R. Krzesinski > Signed-off-by: Ingo Molnar > Link: https://lore.kernel.org/r/20250320142213.2623518-1-herton@redhat.com I have added in Linus's Signed-off-by tag, to make this SOB chain valid. Let me know if that's not OK. Thanks, Ingo