From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZr5rcjOpcSAgyYzTHWN5J2wQVhwyj++D6SCpIu2/bCrBeO/bXrac0F5QeVoD6aTcrks0OzA ARC-Seal: i=1; a=rsa-sha256; t=1526198516; cv=none; d=google.com; s=arc-20160816; b=ofzT34topstG3yuoE+pVzB0TWHA3ZINppcepvcIeVj1817CstQIecOexHhtxBiN3i5 1TOjoeL9N7Z9UocWzPfj+pj8mLSQipkfmk97KMy7KyeDwuWiGW94s11MQQZyjmGPpHom pEXiS0EUR9pers/xZuaWwHoM8SBOfFkYiuVAqYlY7vFR3RREblf8NOtHQ8vX5lLbHYKK bqPIeypj52YTwlLkVJfgvRhHEUKR4UpoGjhz64YIVeGyDlTRHPwFyr+MiAEsB3ohk0yu g8RVCyHFsI9o9PwwxKuM2TzjuI8DPw8AMXOFydxtEjRAk3VrD7HDZz65sTCacQeC4V8s Pllw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:in-reply-to:mime-version:user-agent:date :message-id:from:cc:references:to:subject:arc-authentication-results; bh=4i2iwfwRARuJIjFwJj4+Z2gOtqOQYYQtbc+9gc43EJU=; b=l0Lmqz15+zM01eDnacY0gVp6UfNFbNsN/JHkzgltTogO8pRBrEk1i4debIojog5Bx5 ryhpgXIKse8LtUbETg9WbBn/mZUqi4nXpku7Xu9R4rAtb4Cva72i5tFtIY2k59dwYzt9 3Nt8YFS+I3w+ska45vcfxF/upZzJiECiq1DwsdiBqTctS5a9qSXnsFY40zR1cZgoxP1p wSyG2WH+PpWryI1wBrx9SiDJ2wwts5wRLEZvGQ9p/TVTRnK/29TckhunX8V4cHio56zI VJQJBF+javq74DD9WP+VGR7MEEEOdieGf11zScoQ9EYcoLL8oheG2K5LtuOUgk62HzVr I7Bw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of baolu.lu@linux.intel.com designates 134.134.136.31 as permitted sender) smtp.mailfrom=baolu.lu@linux.intel.com Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of baolu.lu@linux.intel.com designates 134.134.136.31 as permitted sender) smtp.mailfrom=baolu.lu@linux.intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,395,1520924400"; d="scan'208";a="50410118" Subject: Re: [PATCH v5 03/23] iommu/vt-d: add a flag for pasid table bound status To: Jacob Pan , iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , Greg Kroah-Hartman , Alex Williamson , Jean-Philippe Brucker References: <1526072055-86990-1-git-send-email-jacob.jun.pan@linux.intel.com> <1526072055-86990-4-git-send-email-jacob.jun.pan@linux.intel.com> Cc: Rafael Wysocki , "Liu, Yi L" , "Tian, Kevin" , Raj Ashok , Jean Delvare , Christoph Hellwig From: Lu Baolu Message-ID: <5AF7F0EE.902@linux.intel.com> Date: Sun, 13 May 2018 16:01:50 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: <1526072055-86990-4-git-send-email-jacob.jun.pan@linux.intel.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1600202361739379214?= X-GMAIL-MSGID: =?utf-8?q?1600335135357923526?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Hi again, On 05/12/2018 04:53 AM, Jacob Pan wrote: > Adding a flag in device domain into to track whether a guest or > user PASID table is bound to a device. > > Signed-off-by: Jacob Pan > --- > include/linux/intel-iommu.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h > index 304afae..ddc7d79 100644 > --- a/include/linux/intel-iommu.h > +++ b/include/linux/intel-iommu.h > @@ -473,6 +473,7 @@ struct device_domain_info { > u8 pri_enabled:1; > u8 ats_supported:1; > u8 ats_enabled:1; > + u8 pasid_table_bound:1; Can you please add some comments here? So that, people can understand the purpose for this bit exactly. Best regards, Lu Baolu > u8 ats_qdep; > u64 fault_mask; /* selected IOMMU faults to be reported */ > struct device *dev; /* it's NULL for PCIe-to-PCI bridge */