[PATCH qemu-server v3 0/2] qemuserver: fix virtio-gpu not being available on aarch64

[PATCH qemu-server v3 0/2] qemuserver: fix virtio-gpu not being available on aarch64

[Kaiyang Wu]

Replace 'virtio-vga-gl' with 'virtio-gpu-gl' to use the correct variant of
virtio-gpu on aarch64, and fix the detection of libGL and libEGL libraries on
non-x86_64 architectures.

Changes v2 -> v3:
- Use 'map_vga_model' subroutine to map VGA models to device names on different
  architectures accordingly (as suggested by Dominik Csapak
  <d.csapak@proxmox.com>)

Changes v1 -> v2:
- Use the host architecture to locate the libraries (as suggested by Dominik
  Csapak <d.csapak@proxmox.com>)
- Replace 'virtio-vga-gl' with 'virtio-gpu-gl' on aarch64 to make virtio-gl
  display option available on aarch64

Kaiyang Wu (2):
  qemuserver: make base path of libGL and libEGL libraries
    architecture-aware
  qemuserver: make vga model mapping architecture-aware

 src/PVE/QemuServer.pm | 34 ++++++++++++++++++++++------------
 1 file changed, 22 insertions(+), 12 deletions(-)

-- 
2.52.0

[PATCH qemu-server v3 1/2] qemuserver: make base path of libGL and libEGL libraries architecture-aware

[Kaiyang Wu]

'print_vga_device' assumed x86_64 library path to look for 'libGL.so.1'
and 'libEGL.so.1', which leads to missing libraries error regardless of
whether 'libgl1' and 'libegl1' were installed or not, on architectures
other than x86_64.

Make base path of the libraries architecture-aware to correctly locate
the libraries on non-x86_64 architectures.

Suggested-by: Dominik Csapak <d.csapak@proxmox.com>
Signed-off-by: Kaiyang Wu <wukaiyang@loongfans.cn>
---
 src/PVE/QemuServer.pm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/PVE/QemuServer.pm b/src/PVE/QemuServer.pm
index 191ae549..c11351bb 100644
--- a/src/PVE/QemuServer.pm
+++ b/src/PVE/QemuServer.pm
@@ -1540,7 +1540,9 @@ sub print_vga_device {
     }
 
     if ($vga->{type} eq 'virtio-gl') {
-        my $base = '/usr/lib/x86_64-linux-gnu/lib';
+        my $host_arch = get_host_arch();
+        my $base = "/usr/lib/${host_arch}-linux-gnu/lib";
+
         die "missing libraries for '$vga->{type}' detected! Please install 'libgl1' and 'libegl1'\n"
             if !-e "${base}EGL.so.1" || !-e "${base}GL.so.1";
 
-- 
2.52.0

[PATCH qemu-server v3 2/2] qemuserver: make vga model mapping architecture-aware

[Kaiyang Wu]

Fix virtio-gpu not being available on aarch64.

QEMU only provides the non-VGA variant of virtio-gpu-gl on aarch64.
Add 'map_vga_model' subroutine to map VGA models to correct device
names on different architectures accordingly, replacing the old 'vga_map'
look up method.

Suggested-by: Dominik Csapak <d.csapak@proxmox.com>
Signed-off-by: Kaiyang Wu <wukaiyang@loongfans.cn>
---
 src/PVE/QemuServer.pm | 30 +++++++++++++++++++-----------
 1 file changed, 19 insertions(+), 11 deletions(-)

diff --git a/src/PVE/QemuServer.pm b/src/PVE/QemuServer.pm
index c11351bb..e4e15f12 100644
--- a/src/PVE/QemuServer.pm
+++ b/src/PVE/QemuServer.pm
@@ -1475,21 +1475,29 @@ sub print_netdev_full {
     return $netdev;
 }
 
-my $vga_map = {
-    'cirrus' => 'cirrus-vga',
-    'std' => 'VGA',
-    'vmware' => 'vmware-svga',
-    'virtio' => 'virtio-vga',
-    'virtio-gl' => 'virtio-vga-gl',
-};
+sub map_vga_model {
+    my ($vga_type, $arch) = @_;
+    my $vga_map = {
+        'cirrus' => 'cirrus-vga',
+        'std' => 'VGA',
+        'vmware' => 'vmware-svga',
+    };
+
+    if ($arch eq 'x86_64') {
+        $vga_map->{'virtio'} = 'virtio-vga';
+        $vga_map->{'virtio-gl'} = 'virtio-vga-gl';
+    } elsif ($arch eq 'aarch64') {
+        $vga_map->{'virtio'} = 'virtio-gpu';
+        $vga_map->{'virtio-gl'} = 'virtio-gpu-gl';
+    }
+
+    return $vga_map->{$vga_type};
+}
 
 sub print_vga_device {
     my ($conf, $vga, $arch, $machine_version, $id, $qxlnum, $bridges) = @_;
 
-    my $type = $vga_map->{ $vga->{type} };
-    if ($arch eq 'aarch64' && defined($type) && $type eq 'virtio-vga') {
-        $type = 'virtio-gpu';
-    }
+    my $type = map_vga_model($vga->{type}, $arch);
     my $vgamem_mb = $vga->{memory};
 
     my $max_outputs = '';
-- 
2.52.0

Re: [PATCH qemu-server v3 0/2] qemuserver: fix virtio-gpu not being available on aarch64

[Dominik Csapak]

thanks, patches look good to me now

Reviewed-by: Dominik Csapak <d.csapak@proxmox.com>
Tested-by: Dominik Csapak <d.csapak@proxmox.com>

On 7/16/26 12:44 PM, Kaiyang Wu wrote:
> Replace 'virtio-vga-gl' with 'virtio-gpu-gl' to use the correct variant of
> virtio-gpu on aarch64, and fix the detection of libGL and libEGL libraries on
> non-x86_64 architectures.
> 
> Changes v2 -> v3:
> - Use 'map_vga_model' subroutine to map VGA models to device names on different
>    architectures accordingly (as suggested by Dominik Csapak
>    <d.csapak@proxmox.com>)
> 
> Changes v1 -> v2:
> - Use the host architecture to locate the libraries (as suggested by Dominik
>    Csapak <d.csapak@proxmox.com>)
> - Replace 'virtio-vga-gl' with 'virtio-gpu-gl' on aarch64 to make virtio-gl
>    display option available on aarch64
> 
> Kaiyang Wu (2):
>    qemuserver: make base path of libGL and libEGL libraries
>      architecture-aware
>    qemuserver: make vga model mapping architecture-aware
> 
>   src/PVE/QemuServer.pm | 34 ++++++++++++++++++++++------------
>   1 file changed, 22 insertions(+), 12 deletions(-)
>