Share /dev/shm if DAX is enabled #46
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This allows us to access or bind mount parts of the host filesystem that are overlaid by other mounts in the guest. Signed-off-by: Asahi Lina <[email protected]>
Otherwise, sommelier clobbers the host's X11 socket for display :0. Signed-off-by: Asahi Lina <[email protected]>
We want to reuse the socket forwarding code for X11, so make this into a generic thing. Signed-off-by: Asahi Lina <[email protected]>
If the host has DISPLAY set, parse it and forward that UNIX socket to the guest via vsock, then forward :1 on the guest to this vsock, and finally set HOST_DISPLAY=:1 on the guest. Apps that want to directly talk to X11 on the host (instead of going through sommelier) should set DISPLAY=$HOST_DISPLAY and LIBGL_ALWAYS_SOFTWARE=true. This setup allows X11 apps in the host and the guest to cooperate (e.g. XEmbed) but requires software rendering inside the guest. TODO: Figure out why things hang without LIBGL_ALWAYS_SOFTWARE=true. Ideally DRI3 should fail and fall back to software automatically. Signed-off-by: Asahi Lina <[email protected]>
With DAX, we have coherent mmap with the host. Sharing /dev/shm means that POSIX shared memory will work across the VM boundary. Signed-off-by: Asahi Lina <[email protected]>
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Superseded by #96 |
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Depends on #44.