diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/interop/index.rst | 1 | ||||
| -rw-r--r-- | docs/interop/vhost-user.rst | 24 | ||||
| -rw-r--r-- | docs/interop/vhost-vdpa.rst | 17 | ||||
| -rw-r--r-- | docs/tools/qemu-img.rst | 5 |
4 files changed, 46 insertions, 1 deletions
diff --git a/docs/interop/index.rst b/docs/interop/index.rst index 049387ac6d..006f986420 100644 --- a/docs/interop/index.rst +++ b/docs/interop/index.rst @@ -20,3 +20,4 @@ Contents: qemu-ga vhost-user vhost-user-gpu + vhost-vdpa diff --git a/docs/interop/vhost-user.rst b/docs/interop/vhost-user.rst index 688b7c6900..10e3e3475e 100644 --- a/docs/interop/vhost-user.rst +++ b/docs/interop/vhost-user.rst @@ -816,6 +816,7 @@ Protocol features #define VHOST_USER_PROTOCOL_F_RESET_DEVICE 13 #define VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS 14 #define VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS 15 + #define VHOST_USER_PROTOCOL_F_STATUS 16 Master message types -------------------- @@ -1307,6 +1308,29 @@ Master message types ``VHOST_USER_ADD_MEM_REG`` message, this message is used to set and update the memory tables of the slave device. +``VHOST_USER_SET_STATUS`` + :id: 39 + :equivalent ioctl: VHOST_VDPA_SET_STATUS + :slave payload: N/A + :master payload: ``u64`` + + When the ``VHOST_USER_PROTOCOL_F_STATUS`` protocol feature has been + successfully negotiated, this message is submitted by the master to + notify the backend with updated device status as defined in the Virtio + specification. + +``VHOST_USER_GET_STATUS`` + :id: 40 + :equivalent ioctl: VHOST_VDPA_GET_STATUS + :slave payload: ``u64`` + :master payload: N/A + + When the ``VHOST_USER_PROTOCOL_F_STATUS`` protocol feature has been + successfully negotiated, this message is submitted by the master to + query the backend for its device status as defined in the Virtio + specification. + + Slave message types ------------------- diff --git a/docs/interop/vhost-vdpa.rst b/docs/interop/vhost-vdpa.rst new file mode 100644 index 0000000000..0c70ba01bc --- /dev/null +++ b/docs/interop/vhost-vdpa.rst @@ -0,0 +1,17 @@ +===================== +Vhost-vdpa Protocol +===================== + +Introduction +============= +vDPA(Virtual data path acceleration) device is a device that uses +a datapath which complies with the virtio specifications with vendor +specific control path. vDPA devices can be both physically located on +the hardware or emulated by software. + +This document describes the vDPA support in qemu + +Here is the kernel commit here +https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4c8cf31885f69e86be0b5b9e6677a26797365e1d + +TODO : More information will add later diff --git a/docs/tools/qemu-img.rst b/docs/tools/qemu-img.rst index 7f0737488a..e33f5575e3 100644 --- a/docs/tools/qemu-img.rst +++ b/docs/tools/qemu-img.rst @@ -253,11 +253,14 @@ Command description: .. program:: qemu-img-commands -.. option:: amend [--object OBJECTDEF] [--image-opts] [-p] [-q] [-f FMT] [-t CACHE] -o OPTIONS FILENAME +.. option:: amend [--object OBJECTDEF] [--image-opts] [-p] [-q] [-f FMT] [-t CACHE] [--force] -o OPTIONS FILENAME Amends the image format specific *OPTIONS* for the image file *FILENAME*. Not all file formats support this operation. + --force allows some unsafe operations. Currently for -f luks, it allows to + erase the last encryption key, and to overwrite an active encryption key. + .. option:: bench [-c COUNT] [-d DEPTH] [-f FMT] [--flush-interval=FLUSH_INTERVAL] [-i AIO] [-n] [--no-drain] [-o OFFSET] [--pattern=PATTERN] [-q] [-s BUFFER_SIZE] [-S STEP_SIZE] [-t CACHE] [-w] [-U] FILENAME Run a simple sequential I/O benchmark on the specified image. If ``-w`` is |