From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (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 E859C2566F4; Mon, 12 May 2025 09:24:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747041869; cv=none; b=u19iouaTOYyuYnc3MhFGNab/bQr7yMfsDXB/FLRLeRzjWISPpWuPQsbVPLh1e/0nWAS4fE8hntv1HFKWDtGjQo4ynhKNK0YckTXD5lEkwgLwLkpQZwUV732Uuijbb69PZiTiBTR7VtZjlP5x7l9nI7weFEONiFU+wdyzqEqDuPw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747041869; c=relaxed/simple; bh=SepfAwFmEPyhCW7mcqed5FnkvJ30i4FjvqzI0hrQgm0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=hlz3Xug9uOyHeHBh9GMu81Cw0c5vHiRjUavkwe2kXa9uKN1e/c2EYcPAaeyjyN4sTfe0dhuzcxZPRoa0HV9iXJaiWdHYCvUZF6ynk5KB2pIv+47FlJ/6Ekis2LF1Fllr8ap5mTzB/QX6tGD6fz5cEWf8lL88vjHYplR/dz9gfZk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=CIot0SOO; arc=none smtp.client-ip=192.198.163.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="CIot0SOO" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1747041868; x=1778577868; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=SepfAwFmEPyhCW7mcqed5FnkvJ30i4FjvqzI0hrQgm0=; b=CIot0SOOUrl4hJ1J1+t7jqOjk/97Maixp2xVge9+hj3EDsWtcUuWKTUc ka4AF/a4kWSeR9ShZhvp3dc8urAS1ikayEq14TXAwCr4DtCm1ainYN8tN E2WFtMhXmHgxp6iAzqfb+K6kbSt1KgDIy2gqZpJH4M5Fuy8DUR56TL5sB 80K2BakC1ubU7q8MdU8r1N0KyLZ+zowyA633jbJgWXiQmgNIq4ZG5JDPp xCw9SLiYN9A6IXK4sa7Y/c539kFIrltn/OLHCMX3JO1zUiohQrP0q4VGt aSpP6YH+iXrDBvfYlF3FOr4F2PTCgm96pnNI0dq6LERiEYsJHuyy8niLD A==; X-CSE-ConnectionGUID: Z/tAuSuhTVeta4wm6CVrUQ== X-CSE-MsgGUID: bU7jMK42TBaNfGntviD5Pg== X-IronPort-AV: E=McAfee;i="6700,10204,11430"; a="48980268" X-IronPort-AV: E=Sophos;i="6.15,281,1739865600"; d="scan'208";a="48980268" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2025 02:24:27 -0700 X-CSE-ConnectionGUID: 1tVxKyEuSbiofFOu0DBnGw== X-CSE-MsgGUID: ErCKQ8jpQD69Q9c/3yHA4w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,281,1739865600"; d="scan'208";a="142525408" Received: from jiaqingz-mobl.ccr.corp.intel.com (HELO [10.124.249.161]) ([10.124.249.161]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2025 02:24:25 -0700 Message-ID: <1862275b-e7ca-4fa0-bdea-f739e90d9d22@linux.intel.com> Date: Mon, 12 May 2025 17:24:21 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] x86/mtrr: Check if fixed-range MTRR exists in mtrr_save_fixed_ranges() To: Borislav Petkov Cc: Thomas Gleixner , Ingo Molnar , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Bernhard Kaindl , Andi Kleen , Li Fei , stable@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250509170633.3411169-2-jiaqing.zhao@linux.intel.com> <20250509173225.GDaB48KZvZSA9QLUaR@fat_crate.local> <0ec52e49-3996-48e2-a16b-5d7eb0a4c8a6@linux.intel.com> Content-Language: en-US From: Jiaqing Zhao In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 2025-05-12 16:46, Borislav Petkov wrote: > On May 12, 2025 10:31:23 AM GMT+02:00, Jiaqing Zhao wrote: >> This fixes unchecked MSR access error on platform without fixed-range >> MTRRs when doing ACPI S3 suspend. > > Is this happening on hw which is shipping now and users will see it or is this some new platform which is yet to see the light of day in the future? > Actually it is happening on virtualized platform. A recent version of ACRN hypervisor has removed emulated fixed-range MTRRs. Thanks, Jiaqing