Re: Usage of vfio-pci without KVM.

[Philippe Mathieu-Daudé]

Cc'ing VFIO maintainers.

On 12/9/23 14:39, Shlomo Pongratz wrote:
> Hi,
> I'm running qemu-system-aarch64 (QEMU emulator version 7.0.93) on
> Ubuntu 20.04.4 LTS i with Intel's i7.
> I'm trying to pass a Samsung NVME device using vfio-pci. I detached
> the device from the nvme driver and attached it to the vfio-pci.
> Using lspci I can see "Kernel driver in use: vfio-pci"
> In QEMU script I've written "-device vfio-pci,host=0000:03:00.0" where
> 0000:03:00.0 is the device PCI address.
> I get the error
> qemu-system-aarch64: -device vfio-pci,host=0000:03:00.0: VFIO_MAP_DMA
> failed: Invalid argument
> qemu-system-aarch64: -device vfio-pci,host=0000:03:00.0: vfio
> 0000:03:00.0: failed to setup container for group 15: memory listener
> initialization failed: Region mach-virt.ram:
> vfio_dma_map(0x55855c75bf00, 0x40000000, 0x100000000, 0x7f5197e00000)
> = -22 (Invalid argument
>
> My question is vfio-pci is supported with cross architecture?
>
> Thank you.
>
> S.P.