diff options
| author | John Levon <john.levon@nutanix.com> | 2021-05-04 16:22:31 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-05-04 16:22:31 +0100 |
| commit | f87e78fcf904688846c9d4490397f3bdf07d424f (patch) | |
| tree | ba77308e16bacbfc228c12800500dcbbab143761 /docs | |
| parent | 1b8f3e66037b3cb59fec6c0fe778c8b3734b7093 (diff) | |
| download | libvfio-user-f87e78fcf904688846c9d4490397f3bdf07d424f.zip libvfio-user-f87e78fcf904688846c9d4490397f3bdf07d424f.tar.gz libvfio-user-f87e78fcf904688846c9d4490397f3bdf07d424f.tar.bz2 | |
stop using struct vfio_device_info (#456)
This struct from vfio.h has grown larger in newer Linux versions; this breaks
older clients, as now the server would require the larger size. Replace with our
own definition.
Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Thanos Makatos <thanos.makatos@nutanix.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/vfio-user.rst | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/docs/vfio-user.rst b/docs/vfio-user.rst index b3498ee..a031778 100644 --- a/docs/vfio-user.rst +++ b/docs/vfio-user.rst @@ -156,10 +156,10 @@ Device-Specific Regions """"""""""""""""""""""" A device can define regions additional to the standard ones (e.g. PCI indexes -0-8). This is achieved by including a VFIO_REGION_INFO_CAP_TYPE capability -in the region info reply of a device-specific region. Such regions are reflected -in ``struct vfio_device_info.num_regions``. Thus, for PCI devices this value can -be equal to, or higher than, VFIO_PCI_NUM_REGIONS. +0-8). This is achieved by including a VFIO_REGION_INFO_CAP_TYPE capability in +the region info reply of a device-specific region. Such regions are reflected in +``struct vfio_user_device_info.num_regions``. Thus, for PCI devices this value +can be equal to, or higher than, VFIO_PCI_NUM_REGIONS. Region I/O via file descriptors ------------------------------- @@ -737,8 +737,7 @@ Message format +--------------+----------------------------+ This command message is sent by the client to the server to query for basic -information about the device. The VFIO device info structure is defined in -``<linux/vfio.h>`` (``struct vfio_device_info``). +information about the device. VFIO device info format ^^^^^^^^^^^^^^^^^^^^^^^ @@ -765,7 +764,8 @@ VFIO device info format * *argsz* is the size of the VFIO device info structure. This is the only field that should be set to non-zero in the request, identifying the client's expected -size. Currently this is a fixed value. +size. This must be at least the size of the struct above; it will be set to +actual size filled in in the reply. * *flags* contains the following device attributes. * VFIO_DEVICE_FLAGS_RESET indicates that the device supports the |