KVM: arm64: selftests: Add guest support to get the vcpuid
authorRaghavendra Rao Ananta <rananta@google.com>
Thu, 7 Oct 2021 23:34:34 +0000 (23:34 +0000)
committerMarc Zyngier <maz@kernel.org>
Sun, 17 Oct 2021 10:17:21 +0000 (11:17 +0100)
commit17229bdc86c9e618e8832b5ca8451e367e07511b
tree31afdf79e928bc8f41bd4bcfc5d73226eb40f8f9
parent0226cd531c587e0cd51e5ce5622051d319182506
KVM: arm64: selftests: Add guest support to get the vcpuid

At times, such as when in the interrupt handler, the guest wants
to get the vcpuid that it's running on to pull the per-cpu private
data. As a result, introduce guest_get_vcpuid() that returns the
vcpuid of the calling vcpu. The interface is architecture
independent, but defined only for arm64 as of now.

Suggested-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Reiji Watanabe <reijiw@google.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211007233439.1826892-11-rananta@google.com
tools/testing/selftests/kvm/include/kvm_util.h
tools/testing/selftests/kvm/lib/aarch64/processor.c