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target-ppc/kvm: Enable transactional memory on POWER8 with KVM-HV, too

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Transactional memory is also supported on POWER8 KVM-HV if the
KVM_CAP_PPC_HTM is not available in the kernel yet, so add a hack
to allow TM here, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Thomas Huth 2016-09-29 12:48:07 +02:00 committed by David Gibson
parent 96c9cff0ab
commit 7f516c9675
1 changed files with 8 additions and 1 deletions
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9
target-ppc/kvm.c
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@ -570,11 +570,18 @@ int kvm_arch_init_vcpu(CPUState *cs)
idle_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, kvm_kick_cpu, cpu);
/* Some targets support access to KVM's guest TLB. */
switch (cenv->mmu_model) {
case POWERPC_MMU_BOOKE206:
/* This target supports access to KVM's guest TLB */
ret = kvm_booke206_tlb_init(cpu);
break;
case POWERPC_MMU_2_07:
if (!cap_htm && !kvmppc_is_pr(cs->kvm_state)) {
/* KVM-HV has transactional memory on POWER8 also without the
* KVM_CAP_PPC_HTM extension, so enable it here instead. */
cap_htm = true;
}
break;
default:
break;
}