Re: [PATCH v4 06/20] KVM: arm/arm64: Check that system supports split eoi/deactivate

Marc Zyngier
2017-10-25T13:47:03Z

On Fri, Oct 20 2017 at 1:49:25 pm BST, Christoffer Dall <christoffer.dall@linaro.org> wrote:
> From: Christoffer Dall <cdall@linaro.org>
>
> Some systems without proper firmware and/or hardware description data
> don't support the split EOI and deactivate operation.
>
> On such systems, we cannot leave the physical interrupt active after the
> timer handler on the host has run, so we cannot support KVM with an
> in-kernel GIC with the timer changes we are about to introduce.
>
> This patch makes sure that trying to initialize the KVM GIC code will
> fail on such systems.
>
> Cc: Marc Zyngier <marc.zyngier@arm.com>
> Signed-off-by: Christoffer Dall <cdall@linaro.org>

Acked-by: Marc Zyngier <marc.zyngier@arm.com>

M.
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