Re: [edk2-devel] [PATCH 0/2] Quo vadis virtio-mmio?

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 6/9/21 7:05 AM, Gerd Hoffmann wrote:
> virtio-mmio support in ovmf seems to be the unloved child.  The final
> virto-1.0 specification was published five(!) years ago, nevertheless
> the mmio transport doesn't support it yet ...
> 
> Some people argue that it has been obsoleted by virtio-pci.  Which is a
> valid argument.  But IMHO isn't a good reason to just let virtio-mmio
> bitrot.  We should either remove it from the tree, or support it.
> 
> So, opening the discussion with this little patch series.  It does the
> latter and adds virtio 1.0 support.  For the mmio transport the
> difference between 0.9.5 and 1.0 is rather small (when compared to the
> pci transport), it is just a bunch of new registers for the changed
> virtio queue initialization.  So the patch series is small too ...
> 
> take care,
>   Gerd
> 
> Gerd Hoffmann (2):
>   OvmfPkg/Virtio10: Add virtio-mmio 1.0 defines
>   OvmfPkg/VirtioMmioDeviceLib: Add virtio 1.0 support.
> 
>  OvmfPkg/Include/IndustryStandard/Virtio10.h   | 12 +++++++
>  .../VirtioMmioDeviceLib/VirtioMmioDevice.h    |  1 +
>  .../VirtioMmioDeviceLib/VirtioMmioDevice.c    | 17 +++++++---
>  .../VirtioMmioDeviceFunctions.c               | 31 +++++++++++++++++--
>  4 files changed, 54 insertions(+), 7 deletions(-)

Series:
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>