From d69c6436443c05a64452054f51a79316297755f4 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Wed, 8 Aug 2012 20:44:20 +0200 Subject: [PATCH] KVM: PPC: BookE: Add support for vcpu->mode Generic KVM code might want to know whether we are inside guest context or outside. It also wants to be able to push us out of guest context. Add support to the BookE code for the generic vcpu->mode field that describes the above states. Signed-off-by: Alexander Graf --- arch/powerpc/kvm/booke.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index bcf87fe89179..70a86c0a9d85 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -501,6 +501,15 @@ static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) continue; } + if (vcpu->mode == EXITING_GUEST_MODE) { + r = 1; + break; + } + + /* Going into guest context! Yay! */ + vcpu->mode = IN_GUEST_MODE; + smp_wmb(); + break; } @@ -572,6 +581,8 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) kvm_guest_exit(); out: + vcpu->mode = OUTSIDE_GUEST_MODE; + smp_wmb(); local_irq_enable(); return ret; }