Re: [PATCH v5 21/23] KVM: arm64: GICv4.1: Reload VLPI configuration on distributor enable/disable

Zenghui Yu
2020-03-18T03:18:14Z

On 2020/3/5 4:33, Marc Zyngier wrote:
> Each time a Group-enable bit gets flipped, the state of these bits
> needs to be forwarded to the hardware. This is a pretty heavy
> handed operation, requiring all vcpus to reload their GICv4
> configuration. It is thus implemented as a new request type.

[note to myself]
... and the status are forwarded to HW by programming VGrp{0,1}En
fields of GICR_VPENDBASER when vPEs are made resident next time.

>
> Of course, we only support Group-1 for now...
>
> Signed-off-by: Marc Zyngier <maz@kernel.org>

Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>

Thanks