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Tue, 17 Dec 2019 17:40:06 +0000 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 17 Dec 2019 09:40:13 -0800 From: Kirti Wankhede To: , Subject: [PATCH v11 Kernel 5/6] vfio iommu: Adds flag to indicate dirty pages tracking capability support Date: Tue, 17 Dec 2019 22:40:50 +0530 Message-ID: <1576602651-15430-6-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1576602651-15430-1-git-send-email-kwankhede@nvidia.com> References: <1576602651-15430-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1576604386; bh=DW9hT32ZjvMazv9WgrRRguhla9Bh9yIz00pg6aOHvIw=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=TG2F1iQCrprPx3nGleKa1GBWHb7R0zxaHPh/N648bFz2r6edKbSCnmQU0iOoRfagP JDglcexXTFO+/LYota7WBTWkx4a4D4xWKRH4XOB5DGBC/YgPEaVYAZVBUohexvosHp U1qNO4kOtD63/MPCmezY6AcbuE7Xubk/k33brGd6vsjDfoN16l5pSGB9HLYEv8ZyVS RksdQOAfuqjNDfF02srL8FNVUvmLsKkF9cs/Qky5yvuWcjDpzzdwYApJJFqq4jjHiB DHW4xqV0X2gTLOL7gEqcdXHrU5oxQ7gId4bFlZApSf87507h62siomf3N4PXyaeHo6 4c2wLgZXbWtOw== X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 216.228.121.143 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Zhengxiao.zx@Alibaba-inc.com, kevin.tian@intel.com, yi.l.liu@intel.com, yan.y.zhao@intel.com, kvm@vger.kernel.org, eskultet@redhat.com, ziye.yang@intel.com, qemu-devel@nongnu.org, cohuck@redhat.com, shuangtai.tst@alibaba-inc.com, dgilbert@redhat.com, zhi.a.wang@intel.com, mlevitsk@redhat.com, pasic@linux.ibm.com, aik@ozlabs.ru, Kirti Wankhede , eauger@redhat.com, felipe@nutanix.com, jonathan.davies@nutanix.com, changpeng.liu@intel.com, Ken.Xue@amd.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Flag VFIO_IOMMU_INFO_DIRTY_PGS in VFIO_IOMMU_GET_INFO indicates that driver support dirty pages tracking. Signed-off-by: Kirti Wankhede Reviewed-by: Neo Jia --- drivers/vfio/vfio_iommu_type1.c | 3 ++- include/uapi/linux/vfio.h | 5 +++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type= 1.c index 101c2b1e72b4..68d8ed3b2665 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2368,7 +2368,8 @@ static long vfio_iommu_type1_ioctl(void *iommu_data, info.cap_offset =3D 0; /* output, no-recopy necessary */ } =20 - info.flags =3D VFIO_IOMMU_INFO_PGSIZES; + info.flags =3D VFIO_IOMMU_INFO_PGSIZES | + VFIO_IOMMU_INFO_DIRTY_PGS; =20 info.iova_pgsizes =3D vfio_pgsize_bitmap(iommu); =20 diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index e8e044c4974d..bdd07e8429e3 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -907,8 +907,9 @@ struct vfio_device_ioeventfd { struct vfio_iommu_type1_info { __u32 argsz; __u32 flags; -#define VFIO_IOMMU_INFO_PGSIZES (1 << 0) /* supported page sizes info */ -#define VFIO_IOMMU_INFO_CAPS (1 << 1) /* Info supports caps */ +#define VFIO_IOMMU_INFO_PGSIZES (1 << 0) /* supported page sizes info */ +#define VFIO_IOMMU_INFO_CAPS (1 << 1) /* Info supports caps */ +#define VFIO_IOMMU_INFO_DIRTY_PGS (1 << 2) /* supports dirty page tracking= */ __u64 iova_pgsizes; /* Bitmap of supported page sizes */ __u32 cap_offset; /* Offset within info struct of first cap */ }; --=20 2.7.0