diff options
| author | Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> | 2013-08-26 14:18:34 +0530 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-08-26 12:47:09 +0300 |
| commit | 6aef266c6e17b798a1740cf70cd34f90664740b3 (patch) | |
| tree | 9b051ea02c2e12ec289f7465a5eefc807ca6f710 /arch/x86/include | |
| parent | 4b0a8670852c1f577014bf2dc4f8a9d1fd908bb9 (diff) | |
kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks
kvm_hc_kick_cpu allows the calling vcpu to kick another vcpu out of halt state.
the presence of these hypercalls is indicated to guest via
kvm_feature_pv_unhalt.
Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration
During migration, any vcpu that got kicked but did not become runnable
(still in halted state) should be runnable after migration.
Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Suzuki Poulose <suzuki@in.ibm.com>
[Raghu: Apic related changes, folding pvunhalted into vcpu_runnable
Added flags for future use (suggested by Gleb)]
[ Raghu: fold pv_unhalt flag as suggested by Eric Northup]
Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Acked-by: Gleb Natapov <gleb@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index c0efd16bdfa..c76ff74a98f 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -516,6 +516,11 @@ struct kvm_vcpu_arch { /* set at EPT violation at this point */ unsigned long exit_qualification; + + /* pv related host specific info */ + struct { + bool pv_unhalted; + } pv; }; struct kvm_lpage_info { |