kernel/linux.git/include/linux/vdpa.h, branch v5.10.258

vdpa: Add eventfd for the vdpa callback

2024-10-17T13:07:57+00:00

[ Upstream commit 5e68470f4e80a4120e9ecec408f6ab4ad386bd4a ] Add eventfd for the vdpa callback so that user can signal it directly instead of triggering the callback. It will be used for vhost-vdpa case. Signed-off-by: Xie Yongji Message-Id: <20230323053043.35-9-xieyongji@bytedance.com> Signed-off-by: Michael S. Tsirkin Acked-by: Jason Wang Stable-dep-of: 02e9e9366fef ("vhost_vdpa: assign irq bypass producer token correctly") Signed-off-by: Sasha Levin

vdpa: introduce config op to get valid iova range

2020-10-23T15:55:27+00:00

This patch introduce a config op to get valid iova range from the vDPA device. Signed-off-by: Jason Wang Link: https://lore.kernel.org/r/20201023090043.14430-2-jasowang@redhat.com Signed-off-by: Michael S. Tsirkin

vdpa: Modify get_vq_state() to return error code

2020-08-05T23:00:23+00:00

Modify get_vq_state() so it returns an error code. In case of hardware acceleration, the available index may be retrieved from the device, an operation that can possibly fail. Reviewed-by: Parav Pandit Signed-off-by: Eli Cohen Link: https://lore.kernel.org/r/20200804162048.22587-9-eli@mellanox.com Signed-off-by: Michael S. Tsirkin Acked-by: Jason Wang

net/vdpa: Use struct for set/get vq state

2020-08-05T22:39:19+00:00

For now VQ state involves 16 bit available index value encoded in u64 variable. In the future it will be extended to contain more fields. Use struct to contain the state, now containing only a single u16 for the available index. In the future we can add fields to this struct. Reviewed-by: Parav Pandit Acked-by: Jason Wang Signed-off-by: Eli Cohen Link: https://lore.kernel.org/r/20200804162048.22587-8-eli@mellanox.com Signed-off-by: Michael S. Tsirkin

vdpa: remove hard coded virtq num

2020-08-05T22:39:18+00:00

This will enable vdpa providers to add support for multi queue feature and publish it to upper layers (vhost and virtio). Signed-off-by: Max Gurtovoy Reviewed-by: Jason Wang Link: https://lore.kernel.org/r/20200804162048.22587-7-eli@mellanox.com Signed-off-by: Michael S. Tsirkin

vDPA: dont change vq irq after DRIVER_OK

2020-08-05T15:08:42+00:00

IRQ of a vq is not expected to be changed in a DRIVER_OK ~ !DRIVER_OK period for irq offloading purposes. Place this comment at the side of bus ops get_vq_irq than in set_status in vhost_vdpa. Signed-off-by: Zhu Lingshan Link: https://lore.kernel.org/r/20200804102123.69978-1-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin

vDPA: add get_vq_irq() in vdpa_config_ops

2020-08-05T15:08:42+00:00

This commit adds a new function get_vq_irq() in struct vdpa_config_ops, which will return the irq number of a virtqueue. Signed-off-by: Zhu Lingshan Suggested-by: Jason Wang Link: https://lore.kernel.org/r/20200731065533.4144-4-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin

vdpa: make sure set_features is invoked for legacy

2020-08-05T15:08:40+00:00

Some legacy guests just assume features are 0 after reset. We detect that config space is accessed before features are set and set features to 0 automatically. Note: some legacy guests might not even access config space, if this is reported in the field we might need to catch a kick to handle these. Signed-off-by: Michael S. Tsirkin

vdpa: introduce get_vq_notification method

2020-06-04T19:36:51+00:00

This patch introduces a new method in the vdpa_config_ops which reports the physical address and the size of the doorbell for a specific virtqueue. This will be used by the future patches that maps doorbell to userspace. Signed-off-by: Jason Wang Link: https://lore.kernel.org/r/20200529080303.15449-4-jasowang@redhat.com Signed-off-by: Michael S. Tsirkin

vdpa: allow a 32 bit vq alignment

2020-04-17T10:05:30+00:00

get_vq_align returns u16 now, but that's not enough for systems/devices with 64K pages. All callers assign it to a u32 variable anyway, so let's just change the return value type to u32. Reported-by: Arnd Bergmann Signed-off-by: Michael S. Tsirkin