tree d7fc878ae67aab3ab2300b3ca72e51f03ff3482b
parent d18232ea8a9480606c53e91d7e2d062c3c151815
author Marc Zyngier <marc.zyngier@arm.com> 1547911794 +0000
committer Marc Zyngier <marc.zyngier@arm.com> 1550610335 +0000

arm/arm64: KVM: Statically configure the host's view of MPIDR

We currently eagerly save/restore MPIDR. It turns out to be
slightly pointless:
- On the host, this value is known as soon as we're scheduled on a
  physical CPU
- In the guest, this value cannot change, as it is set by KVM
  (and this is a read-only register)

The result of the above is that we can perfectly avoid the eager
saving of MPIDR_EL1, and only keep the restore. We just have
to setup the host contexts appropriately at boot time.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>