lkml.org 
[lkml]   [2013]   [Jul]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Date
    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;
    }



    \
     
     \ /
      Last update: 2013-07-22 09:01    [W:4.522 / U:0.268 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site