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


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel