vgsp: per-mdev emulated VRAM size (1.0 multiple mediate sizes)

- nv_vgpu_type_info/ioctl gain vram_mb; nv_vgpu_device gains fb_emul_size
  bound from the mdev type at create (default 512 MiB).
- New nvidia-vgpu-turing-1g type (1024 MiB); turing max_instances 1 -> 2;
  show_description reports the per-type framebuffer and max_instance.
- Thread fb_emul_size through GSCI fb_length/region/frtsOffset, WPR2,
  NV_PFB_PRI_MMU_LOCAL_MEMORY_RANGE, the vidmem allocator bound and the BAR1
  shadow; bar_info callback uses the per-device size.
- UNTESTED at commit time: builds clean; validation blocked by the Xid 140
  incident (reboot pending). See Handoff-vGPU-IO.md ADDENDUM 48.

1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/include/ioctl.h b/kernel/include/ioctl.h
index 36d28ac..58fea37 100644
--- a/kernel/include/ioctl.h
+++ b/kernel/include/ioctl.h
@@ -42,6 +42,7 @@ struct nv_vgpu_type_info {
 	u64 vdev_id;
 	u64 pdev_id;
 	u32 max_instances;
+	u32 vram_mb;	/* emulated framebuffer size; 0 = 512 MiB default */
 };
 
 struct nv_vgpu_ioctl_get_info {
@@ -111,6 +112,7 @@ struct nv_vgpu_ioctl_register_vgpu_type {
 	u64 vdev_id;
 	u64 pdev_id;
 	u32 max_instances;
+	u32 vram_mb;
 };
 
 int nv_vgpu_ioctl_get_info(struct nv_vgpu_device *vgpu, void __user *arg);