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Re: [PATCH for-4.19 v1] automation: add a test for HVM domU on PVH dom0


  • To: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
  • From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • Date: Mon, 10 Jun 2024 16:25:01 +0100
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  • Cc: Doug Goldstein <cardoe@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
  • Delivery-date: Mon, 10 Jun 2024 15:25:09 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 10/06/2024 2:32 pm, Marek Marczykowski-Górecki wrote:
> This tests if QEMU works in PVH dom0. QEMU in dom0 requires enabling TUN
> in the kernel, so do that too.
>
> Add it to both x86 runners, similar to the PVH domU test.
>
> Signed-off-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>

Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

CC Oleksii.

> ---
> Requires rebuilding test-artifacts/kernel/6.1.19

Ok.

But on a tangent, shouldn't that move forwards somewhat?

>
> I'm actually not sure if there is a sense in testing HVM domU on both
> runners, when PVH domU variant is already tested on both. Are there any
> differences between Intel and AMD relevant for QEMU in dom0?

It's not just Qemu, it's also HVMLoader, and the particulars of VT-x/SVM
VMExit decode information in order to generate ioreqs.

I'd firmly suggest having both.

~Andrew



 


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