KVM: arm64: Disable steal time for protected VMs

pKVM doesn't support steal time for protected guests, and
KVM_CAP_STEAL_TIME already reads 0 for them on the VM file descriptor,
but kvm_arm_pvtime_supported() takes no VM, so the host still
accepts the KVM_ARM_VCPU_PVTIME_CTRL attribute, whose IPA would point
kvm_update_stolen_time() at the guest's private memory on every vCPU
load. Pass the VM in and return false for a protected one, so the
attribute returns -ENXIO as it does where steal time isn't implemented.

Reviewed-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20261001135711.1640520-5-fuad.tabba@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>

0 files changed, 0 insertions, 0 deletions