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kvm: Enable XSAVE live migration support

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Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Sheng Yang 2010-06-17 17:53:07 +08:00 • committed by Marcelo Tosatti
parent 51e49430c0
commit f1665b21f1
5 changed files with 186 additions and 3 deletions
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21
kvm-all.c
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@ -71,6 +71,7 @@ struct KVMState
#endif
int irqchip_in_kernel;
int pit_in_kernel;
int xsave, xcrs;
};
static KVMState *kvm_state;
@ -686,6 +687,16 @@ int kvm_init(int smp_cpus)
s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS);
#endif
s->xsave = 0;
#ifdef KVM_CAP_XSAVE
s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE);
#endif
s->xcrs = 0;
#ifdef KVM_CAP_XCRS
s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS);
#endif
ret = kvm_arch_init(s, smp_cpus);
if (ret < 0)
goto err;
@ -1014,6 +1025,16 @@ int kvm_has_debugregs(void)
return kvm_state->debugregs;
}
int kvm_has_xsave(void)
{
return kvm_state->xsave;
}
int kvm_has_xcrs(void)
{
return kvm_state->xcrs;
}
void kvm_setup_guest_memory(void *start, size_t size)
{
if (!kvm_has_sync_mmu()) {