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 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2D5EDC021B1 for ; Thu, 20 Feb 2025 11:41:01 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tl4vF-0006XJ-Pc; Thu, 20 Feb 2025 06:40:53 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tl4vD-0006X5-Jo for qemu-devel@nongnu.org; Thu, 20 Feb 2025 06:40:51 -0500 Received: from mgamail.intel.com ([198.175.65.16]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tl4vB-0001Lx-Gf for qemu-devel@nongnu.org; Thu, 20 Feb 2025 06:40:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1740051650; x=1771587650; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=wvVYXdb28yocyBnfn+6sHaNU/1L9E6JEziRM+W82XE0=; b=YowDV2d36DnSr1NwKkvIZh+Mqa3DIGcct16qQ0tQF9QtgsCdYJSAxyyZ agCqnTmuXXfhVPMj3L3+BflzAdAYLoutbWlEdgWky480opgXzlUV5voUe thAO+fmtkVCGv3LqcLa5zRbySYZov5q2qhNpn1IG9fZhhE3UIqWjpgOp2 dXeKJjI0gQSin2QxC6amwi3ZXAKxdX+BjAwbQfzAI8aWE6hG5DvroGYLY RsbRENc6hRJuE3fZiJ7Nf5+lvWNF5W/waRrAHXoHY4V6l7kPiPqkN0WVa z1IJMuCdw8YxHOuo0FRab+nqF7AhPNp4ycehnX7vVWRh4Y9Nw48Rqs+aF A==; X-CSE-ConnectionGUID: at9IiXWfTpK9ceNXjHIgMQ== X-CSE-MsgGUID: kr2UtbpASxSIT856sfiiuA== X-IronPort-AV: E=McAfee;i="6700,10204,11350"; a="40946500" X-IronPort-AV: E=Sophos;i="6.13,301,1732608000"; d="scan'208";a="40946500" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Feb 2025 03:40:46 -0800 X-CSE-ConnectionGUID: 6Q9c9oxBQtmES3qrPPeglA== X-CSE-MsgGUID: TUTSnQ/5T5iVTVK5IwvYwg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="115507424" Received: from liuzhao-optiplex-7080.sh.intel.com (HELO localhost) ([10.239.160.39]) by orviesa007.jf.intel.com with ESMTP; 20 Feb 2025 03:40:45 -0800 Date: Thu, 20 Feb 2025 20:00:20 +0800 From: Zhao Liu To: Babu Moger Cc: pbonzini@redhat.com, qemu-devel@nongnu.org, kvm@vger.kernel.org, davydov-max@yandex-team.ru Subject: Re: [PATCH v5 4/6] target/i386: Add feature that indicates WRMSR to BASE reg is non-serializing Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=198.175.65.16; envelope-from=zhao1.liu@intel.com; helo=mgamail.intel.com X-Spam_score_int: -48 X-Spam_score: -4.9 X-Spam_bar: ---- X-Spam_report: (-4.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.457, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Thu, Feb 06, 2025 at 01:28:37PM -0600, Babu Moger wrote: > Date: Thu, 6 Feb 2025 13:28:37 -0600 > From: Babu Moger > Subject: [PATCH v5 4/6] target/i386: Add feature that indicates WRMSR to > BASE reg is non-serializing > X-Mailer: git-send-email 2.34.1 > > Add the CPUID bit indicates that a WRMSR to MSR_FS_BASE, MSR_GS_BASE, or > MSR_KERNEL_GS_BASE is non-serializing. > > CPUID_Fn80000021_EAX > Bit Feature description > 1 FsGsKernelGsBaseNonSerializing. > WRMSR to FS_BASE, GS_BASE and KernelGSbase are non-serializing. > > Link: https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/57238.zip > Signed-off-by: Babu Moger > Reviewed-by: Maksim Davydov > --- > target/i386/cpu.c | 2 +- > target/i386/cpu.h | 2 ++ > 2 files changed, 3 insertions(+), 1 deletion(-) Reviewed-by: Zhao Liu