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kvm: x86: Save/restore KVM-specific CPU states

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Save and restore all so far neglected KVM-specific CPU states. Handling
the TSC stabilizes migration in KVM mode. The interrupt_bitmap and
mp_state are currently unused, but will become relevant for in-kernel
irqchip support. By including proper saving/restoring already, we avoid
having to increment CPU_SAVE_VERSION later on once again.

v2:
 - initialize mp_state runnable (for the boot CPU)

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Jan Kiszka 2009-05-02 02:18:38 +02:00 • committed by Anthony Liguori
parent d33a1810d7
commit f8d926e9cd
5 changed files with 49 additions and 3 deletions
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20
kvm-all.c
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@ -181,6 +181,26 @@ err:
return ret;
}
int kvm_put_mp_state(CPUState *env)
{
struct kvm_mp_state mp_state = { .mp_state = env->mp_state };
return kvm_vcpu_ioctl(env, KVM_SET_MP_STATE, &mp_state);
}
int kvm_get_mp_state(CPUState *env)
{
struct kvm_mp_state mp_state;
int ret;
ret = kvm_vcpu_ioctl(env, KVM_GET_MP_STATE, &mp_state);
if (ret < 0) {
return ret;
}
env->mp_state = mp_state.mp_state;
return 0;
}
int kvm_sync_vcpus(void)
{
CPUState *env;