KVM: PPC: Book3S HV: Initialize AMOR in nested entry

The hypervisor always sets AMOR to ~0, but let's ensure we're not
passing stale values around.

Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220425142151.1495142-1-farosas@linux.ibm.com

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index cd63dd0..c5fd9b4 100644 (file)
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -3967,6 +3967,7 @@ static int kvmhv_vcpu_entry_p9_nested(struct kvm_vcpu *vcpu, u64 time_limit, uns
 
        kvmhv_save_hv_regs(vcpu, &hvregs);
        hvregs.lpcr = lpcr;
+       hvregs.amor = ~0;
        vcpu->arch.regs.msr = vcpu->arch.shregs.msr;
        hvregs.version = HV_GUEST_STATE_VERSION;
        if (vcpu->arch.nested) {