diff options
Diffstat (limited to 'kernel/main.c')
| -rw-r--r-- | kernel/main.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/main.c b/kernel/main.c index 3da7dc6..a47fe23 100644 --- a/kernel/main.c +++ b/kernel/main.c @@ -96,12 +96,27 @@ static unsigned int nv_vgpu_get_available(struct mdev_type *mtype) return active >= max ? 0 : max - active; } +/* + * show_description - mdev type description for management tools. + * + * / parses "framebuffer=<n>M" from this string for EVERY + * supported type before creating an mdev, so the field is mandatory + * (missing description file -> readFile failure -> no vGPU). + * 256M matches the vGPU BAR1 (VRAM aperture) size we expose to guests. + */ +static ssize_t nv_vgpu_show_description(struct mdev_type *mtype, char *buf) +{ + return sysfs_emit(buf, "num_heads=1, frl_config=60, framebuffer=256M, " + "max_resolution=5120x2880, max_instance=1\n"); +} + struct mdev_driver nv_vgpu_mdev_driver = { .device_api = VFIO_DEVICE_API_PCI_STRING, .max_instances = 8, .probe = nv_vgpu_mdev_create, .remove = nv_vgpu_mdev_remove, .get_available = nv_vgpu_get_available, + .show_description = nv_vgpu_show_description, .driver = { .name = "nvidia-vgpu-vfio-mdev", }, |