On Fri, Nov 1, 2024 at 10:31 AM Gerd Hoffmann <[email protected]> wrote:
> Hi,
>
> > By analyzing the calls to the dispatcher (`gDS->Dispatch ()`) I found
> > that when we only have COM1, EfiBootManagerConnectDevicePath() at some
> > point invokes `gDS->Dispatch ()` after VirtioRng has started. This call
> > will then get DxeNetLib loaded.
>
> Ok, so it is probably a good idea to explicitly request a dispatch after
> activating virtio-rng, so we do not depend on this happening by pure
> luck for other reasons:
>
> --- a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
> +++ b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
> @@ -670,6 +670,7 @@ ConnectVirtioPciRng (
> if (EFI_ERROR (Status)) {
> goto Error;
> }
> + gDS->Dispatch ();
> }
>
> return EFI_SUCCESS;
>
> [ untested patch, and we probably should do something similar for ArmVirt,
> /me goes continue walking through my email backlog now ]
>
That works.
>
> take care,
> Gerd
>
>
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