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Mon, 30 Mar 2020 17:24:46 +0000 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Mon, 30 Mar 2020 10:24:53 -0700 From: Kirti Wankhede To: , Subject: [PATCH v17 Kernel 6/7] vfio iommu: Adds flag to indicate dirty pages tracking capability support Date: Mon, 30 Mar 2020 22:20:43 +0530 Message-ID: <1585587044-2408-7-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1585587044-2408-1-git-send-email-kwankhede@nvidia.com> References: <1585587044-2408-1-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=1585589080; bh=HmCqHH2I4fmHzCZdrV/Nh3fYOyJ7Zyzr6LDRd5l0BCA=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=JOchW1siWS/3HJN6xcVDqUZY8Np/LACCqQYGTBXPXuAsZTDqCENBej+C0Aqsjzy6G 7PVbVYmg3lQ8z/v+X+pXgjX8HK1VOpaLWqh6VNjDZnH52VlkwLw8NjIVVwaBBKfhD1 ZVHUWp1jYwvVWsO1aphw0Bg6Zao99m0cB4klJTLe3BXdqi9+YOe+gG1mTsi0S4hKms SKKZoK0orqwNWCP/WinHGnjPgvyAUqNEvZl5OvzWXHp7zKWB8Gv+yetOq554myYhra udLMdb0yeGVSU8K+7C0K50PpRGonrVxuf7D83SILvJy4chdNfDgQKI1FMB0BRJBPTl pcRP6NsRJ5phA== X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 216.228.121.65 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 266550bd7307..9fe12b425976 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2390,7 +2390,8 @@ 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 e3cbf8b78623..0fe7c9a6f211 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -985,8 +985,9 @@ struct vfio_device_feature { 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