linux-kernel - RE: [PATCH v2 3/5] iommu/vt-d: Move iopf code from SVA to IOPF enabling path

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <BN9PR11MB52768EE2CAAAFAF78F90EEA38CBC9@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Thu, 16 Mar 2023 07:10:19 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Lu Baolu <baolu.lu@...ux.intel.com>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>
CC:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        "Robin Murphy" <robin.murphy@....com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "Jiang, Dave" <dave.jiang@...el.com>,
        Vinod Koul <vkoul@...nel.org>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 3/5] iommu/vt-d: Move iopf code from SVA to IOPF
 enabling path

> From: Lu Baolu <baolu.lu@...ux.intel.com>
> Sent: Thursday, March 9, 2023 10:57 AM
> 
> Generally enabling IOMMU_DEV_FEAT_SVA requires
> IOMMU_DEV_FEAT_IOPF, but
> some devices manage I/O Page Faults themselves instead of relying on the
> IOMMU. Move IOPF related code from SVA to IOPF enabling path.
> 
> For the device drivers that relies on the IOMMU for IOPF through PCI/PRI,
> IOMMU_DEV_FEAT_IOPF must be enabled before and disabled after
> IOMMU_DEV_FEAT_SVA.
> 
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>

Reviewed-by: Kevin Tian <kevin.tian@...el.com>