Re: [RFC PATCH 2/2] KVM: arm64: selftests: Test VGICv3 redistributor region retry

[Marc Zyngier <maz@kernel.org>]

On Mon, 10 Aug 2026 07:52:17 +0100,
Karl Mehltretter <kmehltretter@gmail.com> wrote:
> 
> The existing redistributor-region test already adds valid partial
> regions, rejects a later region that collides with the distributor, and
> retries with a valid region. Its guest code does not access a
> redistributor, so it misses redistributor MMIO bus entries lost by the
> failed rollback.
> 
> Run a guest that reads GICR_TYPER from the second redistributor in the
> original region and verifies its processor number. Put the test layout

What does test layout mean here?

> outside the default guest memory slot so an absent iodev results in a
> KVM_EXIT_MMIO instead of an ordinary RAM access.

I really hope that accessing an iodev *never* results in RAM
access. That'd be... unproductive, at the very least.

> 
> Allow the common VGIC setup helper to select the guest entry point so the
> retry case can reuse the normal test setup.

[...]

This really need to be split. One patch to change the testing
infrastructure, another one for whatever new test you want to add.

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.