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Subject[PATCH RFC V11 13/18] kvm : Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration
kvm : Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration

From: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>

During migration, any vcpu that got kicked but did not become runnable
(still in halted state) should be runnable after migration.

Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
---
arch/x86/kvm/x86.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index dae4575..1e73dab 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6284,7 +6284,12 @@ int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
kvm_apic_accept_events(vcpu);
- mp_state->mp_state = vcpu->arch.mp_state;
+ if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED &&
+ vcpu->arch.pv.pv_unhalted)
+ mp_state->mp_state = KVM_MP_STATE_RUNNABLE;
+ else
+ mp_state->mp_state = vcpu->arch.mp_state;
+
return 0;
}



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