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 A9F3F4C8F; Thu, 9 Jan 2025 16:51:47 +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=1736441507; cv=none; b=J812STS7irILqNr9vsHsmCNS4niiGMHY2MscLjT7UuYHDliRoH8wGJdwAgnut5DpV/X5+rpCDM6RmGgtMtkmQWYdTdQ0COk01aCKuUe4rJtWbKbLpUWnTG7UfLhzW9yXzBYwG87Ftp2ioFJ6tkmrxGxRonuy2oGpMTy/h/dg7nc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736441507; c=relaxed/simple; bh=wAt1V4OmdUBqn+fpxgrDGfhV5zdTbxWpA2JYnCCrjhE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=dJMcHZXGk7JggOV9rRB4EhQJudihjIp54joxn+yv70sVXknqWjWU5aqCFmD5v5cpJ1pnxpP0LlOjWgqpxUpQkbNoz4mr55i9HFxMyme1YDJYzEWIUwhbV3UsRSO09R0Nz7WrE6xPxZ6tdw/x5gWnZM7V6otQAXwh/tcJbM39VXw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eh6+6M/N; 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="eh6+6M/N" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 32792C4CED2; Thu, 9 Jan 2025 16:51:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736441507; bh=wAt1V4OmdUBqn+fpxgrDGfhV5zdTbxWpA2JYnCCrjhE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=eh6+6M/NevPjIyyh72LLGv0s/vxUonGKmtm0a34KPXcMjmJ4aZdSljVeorNNqppyf irb6S2c/gG3iX/lEqGZRTkflk1lLbLZTsdRlAO7NYnZ8Rpq8IUXW2iLzKVkha+UIrx sSMMtm3osiTQsVhgifaZjX0eXYxY7iciY52hTokF5EmcnLnYVJzGi66Lxlz7k/00Hu 0ERzjJfY12PCsFVycJRrBZHso1W0Oh5e1Y/AlGGR0bTh7087A1o2sQrMFn3hbgAwU2 WulxxFQkKKLqyqxKGi8EVQw16WjmV1UqX2IUVWJlOTh9rbVwzSXvxMRW7/YQFcff13 W8BnH/VI8I7eg== Date: Thu, 9 Jan 2025 08:51:44 -0800 From: Kees Cook To: kernel test robot Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Thomas =?iso-8859-1?Q?Wei=DFschuh?= , Nilay Shroff , Yury Norov , Greg Kroah-Hartman , linux-hardening@vger.kernel.org Subject: Re: [linus:master] [fortify] 239d87327d: vm-scalability.throughput 17.3% improvement Message-ID: <202501090850.F23EBEBC5B@keescook> References: <202501091405.a1fcb1ed-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-hardening@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: <202501091405.a1fcb1ed-lkp@intel.com> On Thu, Jan 09, 2025 at 02:57:58PM +0800, kernel test robot wrote: > kernel test robot noticed a 17.3% improvement of vm-scalability.throughput on: > > commit: 239d87327dcd361b0098038995f8908f3296864f ("fortify: Hide run-time copy size from value range tracking") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master Well that is unexpected. There should be no binary output difference with that patch. I will investigate... -- Kees Cook