Re: [edk2-devel] [PATCH v2 3/4] OvmfPkg/PlatformInitLib: dynamic mmio window size

["Gerd Hoffmann" <kraxel@redhat.com>]

On Tue, May 16, 2023 at 04:00:55PM +0200, Fiona Ebner wrote:
> 
> Am 04.10.22 um 15:47 schrieb Gerd Hoffmann:
> > In case we have a reliable PhysMemAddressWidth use that to dynamically
> > size the 64bit address window.  Allocate 1/8 of the physical address
> > space and place the window at the upper end of the address space.
> > 
> > Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> 
> Hi,
> a user recently reported that their Ubuntu 18.04 VM failed to boot after
> upgrading to our package based on edk2-stable202302 [0]. While the guest
> does reach GRUB, the disk attached via virtio-scsi-pci could not be
> found anymore.  The user also reported that after changing the bus to
> pvscsi, the VM booted again, but the virtual NIC attached via
> virtio-net-pci did not work. Changing to e1000 made that work too.

So the system makes it successfully though the firmware boot phase,
but then the kernel fails to initialize the virtio devices, correct?

> Happy to provide more information and relevant parts of debug logs.

Kernel logs should give a clue what is going on.

take care,
  Gerd