Re: [PATCH] KVM: arm64: nv: Set ISTATUS for emulated timers, If timer expired

[Ganapatrao Kulkarni]

On 09-12-2024 11:04 pm, Eric Auger wrote:
> Hi Marc,
>
> On 12/9/24 18:30, Marc Zyngier wrote:
> > On Mon, 09 Dec 2024 16:46:30 +0000,
> > Eric Auger <eauger@xxxxxxxxxx> wrote:
> > > Hi,
> > >
> > > On 12/9/24 16:39, Ganapatrao Kulkarni wrote:
> > > > On 09-12-2024 06:50 pm, Marc Zyngier wrote:
> > > > > On Mon, 09 Dec 2024 12:25:34 +0000,
> > > > > Ganapatrao Kulkarni <gankulkarni@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> > > > > > > > During automated testing of Nested Virtualization using avocado-vt,
> > > > > > >
> > > > > > > Which is not merged upstream. So what branch are you using? Based on
> > > > > > > what kernel version? On what HW? With which virtualisation features?
> > > > > >
> > > > > > Testing is done on Ampere's AmpereOne platform using 6.10 based kernel
> > > > > > with NV patches from your repo.
> > > > >
> > > > > Grmbl... *Which* patches? At least give me the SHA1 of the branch,
> > > > > because I have no idea what you are running. And 6.10 is definitely
> > > > > not something I care about. If you're using the NV patches, the
> > > > > *minimum* you should run is 6.13-rc1, because that's what the current
> > > > > code is based on.
> > > >
> > > > I tried 6.13-rc1 based nv-next branch today, which failed to boot
> > > > UEFI as L1. Yet to debug this.
> > >
> > > I confirm am stuck with the same issue with nv-next on AmpereOne.
> >
> > All I can say is that it Works For Me (TM) on M2 and Snapdragon, using
> > kvmtool, a fresh EDK2 built by Ard, and with the guest running purely
> > VHE (FEAT_E2H0 not implemented).
> >
> > I haven't tried QEMU, I don't have an AmpereOne. I have also spent way
> > too much time on this recently. So I'm afraid people interested in
> > making this particular combination work will have to debug it.
>
> yes I do agree. I am currently setting up kvmtool to double check and I
> will debug the qemu issue.

I could boot Guest-hypervisor using QEMU with -bios and nv-next as L0 
with edk2 (QEMU_EFI.fd) built from upstream tree and fedora-41 as 
Guest-Hypervisor.

The issue was disappeared when upgraded from fc39 to fc41. Same was 
experienced with the kvmtool boot as well(KVMTOOL_EFI.fd).

--
Thanks,
Ganapat/GK