Re: issues with emulated PCI MMIO backed by host memory under KVM

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(adding Gerd)

On 06/28/16 15:14, Ard Biesheuvel wrote:

> In any case, reconciling software that requires a framebuffer with a
> GPU emulation that does not expose one by design is going to be
> problematic even without this issue. How is this supposed to work on
> x86?

AFAIK:

"virtio-gpu-pci" is the device model without the framebuffer. It is good
for secondary displays (i.e. those that you don't boot with, only use
after the guest kernel starts up).

"virtio-vga" is the same, but it also has the legacy VGA framebuffer,
hence it can be used for accommodating boot loaders. (Except it won't
work for aarch64 KVM guests, because of $SUBJECT.)

Thanks
Laszlo

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