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gpu: Expose Venus capset for virglrenderer backend

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Expose Venus capability set support using the virglrenderer backend, enabled by
the new blob resource support.

Signed-off-by: Matej Hrica <mhrica@redhat.com>
(cherry picked from commit 6dcc71ef1644d565542a9dbd6601192383d27a96)
This commit is contained in:
Matej Hrica 2025-12-09 19:13:20 +01:00 • committed by Davíð Steinn Geirsson
parent b783086a78
commit 03967ec5e1
3 changed files with 14 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

4
vhost-device-gpu/src/backend/virgl.rs
View file

@ -173,10 +173,12 @@ impl VirglRendererAdapter {
gpu_backend: Option<GpuBackend>,
) -> io::Result<Self> {
let capsets = config.capsets();
let venus_enabled = capsets.contains(GpuCapset::VENUS);
let virglrenderer_flags = VirglRendererFlags::new()
.use_virgl(true)
.use_venus(true)
.use_venus(venus_enabled)
.use_render_server(venus_enabled)
.use_egl(config.flags().use_egl)
.use_gles(config.flags().use_gles)
.use_glx(config.flags().use_glx)

10
vhost-device-gpu/src/lib.rs
View file

@ -34,7 +34,7 @@ use log::info;
#[cfg(feature = "backend-gfxstream")]
use rutabaga_gfx::{RUTABAGA_CAPSET_GFXSTREAM_GLES, RUTABAGA_CAPSET_GFXSTREAM_VULKAN};
#[cfg(feature = "backend-virgl")]
use rutabaga_gfx::{RUTABAGA_CAPSET_VIRGL, RUTABAGA_CAPSET_VIRGL2};
use rutabaga_gfx::{RUTABAGA_CAPSET_VENUS, RUTABAGA_CAPSET_VIRGL, RUTABAGA_CAPSET_VIRGL2};
use thiserror::Error as ThisError;
use vhost_user_backend::VhostUserDaemon;
use vm_memory::{GuestMemoryAtomic, GuestMemoryMmap};
@ -78,7 +78,9 @@ bitflags! {
#[cfg(feature = "backend-virgl")]
const VIRGL2 = 1 << RUTABAGA_CAPSET_VIRGL2 as u64;
#[cfg(feature = "backend-virgl")]
const ALL_VIRGLRENDERER_CAPSETS = Self::VIRGL.bits() | Self::VIRGL2.bits();
const VENUS = 1 << RUTABAGA_CAPSET_VENUS as u64;
#[cfg(feature = "backend-virgl")]
const ALL_VIRGLRENDERER_CAPSETS = Self::VIRGL.bits() | Self::VIRGL2.bits() | Self::VENUS.bits();
#[cfg(feature = "backend-gfxstream")]
const GFXSTREAM_VULKAN = 1 << RUTABAGA_CAPSET_GFXSTREAM_VULKAN as u64;
@ -108,6 +110,8 @@ impl Display for GpuCapset {
Self::VIRGL => write!(f, "virgl")?,
#[cfg(feature = "backend-virgl")]
Self::VIRGL2 => write!(f, "virgl2")?,
#[cfg(feature = "backend-virgl")]
Self::VENUS => write!(f, "venus")?,
#[cfg(feature = "backend-gfxstream")]
Self::GFXSTREAM_VULKAN => write!(f, "gfxstream-vulkan")?,
#[cfg(feature = "backend-gfxstream")]
@ -432,7 +436,7 @@ mod tests {
#[test]
fn test_default_num_capsets() {
#[cfg(feature = "backend-virgl")]
assert_eq!(DEFAULT_VIRGLRENDER_CAPSET_MASK.num_capsets(), 2);
assert_eq!(DEFAULT_VIRGLRENDER_CAPSET_MASK.num_capsets(), 3);
#[cfg(feature = "backend-gfxstream")]
assert_eq!(DEFAULT_GFXSTREAM_CAPSET_MASK.num_capsets(), 2);
}

4
vhost-device-gpu/src/main.rs
View file

@ -26,6 +26,10 @@ pub enum CapsetName {
#[cfg(feature = "backend-virgl")]
Virgl2 = GpuCapset::VIRGL2.bits(),
/// [virglrenderer] Venus (Vulkan) implementation
#[cfg(feature = "backend-virgl")]
Venus = GpuCapset::VENUS.bits(),
/// [gfxstream] Vulkan implementation (partial support only){n}
/// NOTE: Can only be used for 2D display output for now, there is no
/// hardware acceleration yet