From: Vivek Goyal <vgoyal@redhat.com> To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, virtio-fs@redhat.com Cc: vgoyal@redhat.com, miklos@szeredi.hu, stefanha@redhat.com, dgilbert@redhat.com, Sebastien Boeuf <sebastien.boeuf@intel.com>, kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com> Subject: [PATCH v2 03/20] virtio: Add get_shm_region method Date: Fri, 7 Aug 2020 15:55:09 -0400 [thread overview] Message-ID: <20200807195526.426056-4-vgoyal@redhat.com> (raw) In-Reply-To: <20200807195526.426056-1-vgoyal@redhat.com> From: Sebastien Boeuf <sebastien.boeuf@intel.com> Virtio defines 'shared memory regions' that provide a continuously shared region between the host and guest. Provide a method to find a particular region on a device. Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: kvm@vger.kernel.org Cc: "Michael S. Tsirkin" <mst@redhat.com> --- include/linux/virtio_config.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index bb4cc4910750..c859f000a751 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -10,6 +10,11 @@ struct irq_affinity; +struct virtio_shm_region { + u64 addr; + u64 len; +}; + /** * virtio_config_ops - operations for configuring a virtio device * Note: Do not assume that a transport implements all of the operations @@ -65,6 +70,7 @@ struct irq_affinity; * the caller can then copy. * @set_vq_affinity: set the affinity for a virtqueue (optional). * @get_vq_affinity: get the affinity for a virtqueue (optional). + * @get_shm_region: get a shared memory region based on the index. */ typedef void vq_callback_t(struct virtqueue *); struct virtio_config_ops { @@ -88,6 +94,8 @@ struct virtio_config_ops { const struct cpumask *cpu_mask); const struct cpumask *(*get_vq_affinity)(struct virtio_device *vdev, int index); + bool (*get_shm_region)(struct virtio_device *vdev, + struct virtio_shm_region *region, u8 id); }; /* If driver didn't advertise the feature, it will never appear. */ @@ -250,6 +258,15 @@ int virtqueue_set_affinity(struct virtqueue *vq, const struct cpumask *cpu_mask) return 0; } +static inline +bool virtio_get_shm_region(struct virtio_device *vdev, + struct virtio_shm_region *region, u8 id) +{ + if (!vdev->config->get_shm_region) + return false; + return vdev->config->get_shm_region(vdev, region, id); +} + static inline bool virtio_is_little_endian(struct virtio_device *vdev) { return virtio_has_feature(vdev, VIRTIO_F_VERSION_1) || -- 2.25.4
WARNING: multiple messages have this Message-ID (diff)
From: Vivek Goyal <vgoyal@redhat.com> To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, virtio-fs@redhat.com Cc: kvm@vger.kernel.org, miklos@szeredi.hu, "Michael S. Tsirkin" <mst@redhat.com>, vgoyal@redhat.com Subject: [Virtio-fs] [PATCH v2 03/20] virtio: Add get_shm_region method Date: Fri, 7 Aug 2020 15:55:09 -0400 [thread overview] Message-ID: <20200807195526.426056-4-vgoyal@redhat.com> (raw) In-Reply-To: <20200807195526.426056-1-vgoyal@redhat.com> From: Sebastien Boeuf <sebastien.boeuf@intel.com> Virtio defines 'shared memory regions' that provide a continuously shared region between the host and guest. Provide a method to find a particular region on a device. Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: kvm@vger.kernel.org Cc: "Michael S. Tsirkin" <mst@redhat.com> --- include/linux/virtio_config.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index bb4cc4910750..c859f000a751 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -10,6 +10,11 @@ struct irq_affinity; +struct virtio_shm_region { + u64 addr; + u64 len; +}; + /** * virtio_config_ops - operations for configuring a virtio device * Note: Do not assume that a transport implements all of the operations @@ -65,6 +70,7 @@ struct irq_affinity; * the caller can then copy. * @set_vq_affinity: set the affinity for a virtqueue (optional). * @get_vq_affinity: get the affinity for a virtqueue (optional). + * @get_shm_region: get a shared memory region based on the index. */ typedef void vq_callback_t(struct virtqueue *); struct virtio_config_ops { @@ -88,6 +94,8 @@ struct virtio_config_ops { const struct cpumask *cpu_mask); const struct cpumask *(*get_vq_affinity)(struct virtio_device *vdev, int index); + bool (*get_shm_region)(struct virtio_device *vdev, + struct virtio_shm_region *region, u8 id); }; /* If driver didn't advertise the feature, it will never appear. */ @@ -250,6 +258,15 @@ int virtqueue_set_affinity(struct virtqueue *vq, const struct cpumask *cpu_mask) return 0; } +static inline +bool virtio_get_shm_region(struct virtio_device *vdev, + struct virtio_shm_region *region, u8 id) +{ + if (!vdev->config->get_shm_region) + return false; + return vdev->config->get_shm_region(vdev, region, id); +} + static inline bool virtio_is_little_endian(struct virtio_device *vdev) { return virtio_has_feature(vdev, VIRTIO_F_VERSION_1) || -- 2.25.4
next prev parent reply other threads:[~2020-08-07 19:57 UTC|newest] Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-07 19:55 [PATCH v2 00/20] virtiofs: Add DAX support Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 01/20] dax: Modify bdev_dax_pgoff() to handle NULL bdev Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` Vivek Goyal 2020-08-17 16:57 ` Jan Kara 2020-08-17 16:57 ` [Virtio-fs] " Jan Kara 2020-08-17 16:57 ` Jan Kara 2020-08-07 19:55 ` [PATCH v2 02/20] dax: Create a range version of dax_layout_busy_page() Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` Vivek Goyal 2020-08-17 16:53 ` Jan Kara 2020-08-17 16:53 ` [Virtio-fs] " Jan Kara 2020-08-17 16:53 ` Jan Kara 2020-08-17 17:22 ` Vivek Goyal 2020-08-17 17:22 ` [Virtio-fs] " Vivek Goyal 2020-08-17 17:22 ` Vivek Goyal 2020-08-07 19:55 ` Vivek Goyal [this message] 2020-08-07 19:55 ` [Virtio-fs] [PATCH v2 03/20] virtio: Add get_shm_region method Vivek Goyal 2020-08-10 13:47 ` Michael S. Tsirkin 2020-08-10 13:47 ` [Virtio-fs] " Michael S. Tsirkin 2020-08-10 13:54 ` Vivek Goyal 2020-08-10 13:54 ` [Virtio-fs] " Vivek Goyal 2020-08-10 14:02 ` Michael S. Tsirkin 2020-08-10 14:02 ` [Virtio-fs] " Michael S. Tsirkin 2020-08-10 14:06 ` Michael S. Tsirkin 2020-08-10 14:06 ` [Virtio-fs] " Michael S. Tsirkin 2020-08-07 19:55 ` [PATCH v2 04/20] virtio: Implement get_shm_region for PCI transport Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-10 14:05 ` Michael S. Tsirkin 2020-08-10 14:05 ` [Virtio-fs] " Michael S. Tsirkin 2020-08-10 14:50 ` Vivek Goyal 2020-08-10 14:50 ` [Virtio-fs] " Vivek Goyal 2020-08-14 2:51 ` Gurchetan Singh 2020-08-17 20:29 ` Vivek Goyal 2020-08-17 20:29 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 05/20] virtio: Implement get_shm_region for MMIO transport Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-10 14:03 ` Michael S. Tsirkin 2020-08-10 14:03 ` [Virtio-fs] " Michael S. Tsirkin 2020-08-07 19:55 ` [PATCH v2 06/20] virtiofs: Provide a helper function for virtqueue initialization Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 07/20] fuse: Get rid of no_mount_options Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 08/20] fuse,virtiofs: Add a mount option to enable dax Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] [PATCH v2 08/20] fuse, virtiofs: " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 09/20] virtio_fs, dax: Set up virtio_fs dax_device Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 10/20] fuse,virtiofs: Keep a list of free dax memory ranges Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] [PATCH v2 10/20] fuse, virtiofs: " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 11/20] fuse: implement FUSE_INIT map_alignment field Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 12/20] fuse: Introduce setupmapping/removemapping commands Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 13/20] fuse, dax: Implement dax read/write operations Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-10 22:06 ` Dave Chinner 2020-08-10 22:06 ` [Virtio-fs] " Dave Chinner 2020-08-11 17:44 ` Vivek Goyal 2020-08-11 17:44 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 14/20] fuse,dax: add DAX mmap support Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 15/20] fuse, dax: Take ->i_mmap_sem lock during dax page fault Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-10 22:22 ` Dave Chinner 2020-08-10 22:22 ` [Virtio-fs] " Dave Chinner 2020-08-11 17:55 ` Vivek Goyal 2020-08-11 17:55 ` [Virtio-fs] " Vivek Goyal 2020-08-12 1:23 ` Dave Chinner 2020-08-12 1:23 ` [Virtio-fs] " Dave Chinner 2020-08-12 21:10 ` Vivek Goyal 2020-08-12 21:10 ` [Virtio-fs] " Vivek Goyal 2020-08-13 5:12 ` Dave Chinner 2020-08-13 5:12 ` [Virtio-fs] " Dave Chinner 2020-08-07 19:55 ` [PATCH v2 16/20] fuse,virtiofs: Define dax address space operations Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] [PATCH v2 16/20] fuse, virtiofs: " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 17/20] fuse,virtiofs: Maintain a list of busy elements Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] [PATCH v2 17/20] fuse, virtiofs: " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 18/20] fuse: Release file in process context Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-10 8:29 ` Miklos Szeredi 2020-08-10 8:29 ` [Virtio-fs] " Miklos Szeredi 2020-08-10 15:48 ` Vivek Goyal 2020-08-10 15:48 ` [Virtio-fs] " Vivek Goyal 2020-08-10 19:37 ` Vivek Goyal 2020-08-10 19:37 ` [Virtio-fs] " Vivek Goyal 2020-08-10 19:39 ` Miklos Szeredi 2020-08-10 19:39 ` [Virtio-fs] " Miklos Szeredi 2020-08-07 19:55 ` [PATCH v2 19/20] fuse: Take inode lock for dax inode truncation Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] " Vivek Goyal 2020-08-07 19:55 ` [PATCH v2 20/20] fuse,virtiofs: Add logic to free up a memory range Vivek Goyal 2020-08-07 19:55 ` [Virtio-fs] [PATCH v2 20/20] fuse, virtiofs: " Vivek Goyal 2020-08-10 7:29 ` [PATCH v2 00/20] virtiofs: Add DAX support Miklos Szeredi 2020-08-10 7:29 ` [Virtio-fs] " Miklos Szeredi 2020-08-10 13:08 ` Vivek Goyal 2020-08-10 13:08 ` [Virtio-fs] " Vivek Goyal 2020-08-10 13:08 ` Vivek Goyal
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