From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) (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 C200364D for ; Fri, 16 Jun 2023 03:12:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1686885153; x=1718421153; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=SIlRmpyQygKYv0i3uwyThwyRnkqCbhHybrnKDoUIcE8=; b=Zn/KopGRylMtqM9awFZIki/QrwJjED6LALjBjoRkoEHMynA++ZJs2Out 9qGu3/jA0SdCIAw1L8YWfi7rrIYVhIRLpIKFFbkz0N5L7pgiMiyE4OB9o cILOi7qrygyZdexNW3VO8HISejAGPseyI7HX8VNoFr4q2Fa+xrHS/HPrO 7RpuFEDmfO1JlzhKmu547p1E+uy24OC33i/HiYCASeGlaMqqjTo54EvId MUgqicMuysbQ8IgwcYfH1yrrwtzALHy/Hz4JGBJ/ThIrNhEOhJ+jEmvIl qP/cPYmitaW+s8WEmfPqPWrskb22lQ79zdf+z4GlkLTmt/a/TYbGAQUOB g==; X-IronPort-AV: E=McAfee;i="6600,9927,10742"; a="359106658" X-IronPort-AV: E=Sophos;i="6.00,246,1681196400"; d="scan'208";a="359106658" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jun 2023 20:12:32 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10742"; a="663017410" X-IronPort-AV: E=Sophos;i="6.00,246,1681196400"; d="scan'208";a="663017410" Received: from allen-box.sh.intel.com (HELO [10.239.159.127]) ([10.239.159.127]) by orsmga003.jf.intel.com with ESMTP; 15 Jun 2023 20:12:30 -0700 Message-ID: Date: Fri, 16 Jun 2023 11:11:20 +0800 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Cc: baolu.lu@linux.intel.com, iommu@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] iommu/vt-d: Fix to flush cache of PASID directory table Content-Language: en-US To: Yanfei Xu , dwmw2@infradead.org, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com References: <20230615071613.690639-1-yanfei.xu@intel.com> <3f60b35a-683c-5e18-c9d5-964df9331f0f@linux.intel.com> <5044217c-9380-f50a-2809-0e3dc80f7bd2@intel.com> From: Baolu Lu In-Reply-To: <5044217c-9380-f50a-2809-0e3dc80f7bd2@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 6/16/23 11:06 AM, Yanfei Xu wrote: >>> >>> Fixes: 194b3348bdbb ("iommu/vt-d: Fix PASID directory pointer >>> coherency") >> >> Do you need a Cc stable? > > Yes, will add Cc: I was not asking you to Cc stable, just reminded you to consider whether your change fixes any real problem and that problem could also happen with stable kernels. Best regards, baolu