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[Qemu-ppc] [PATCH] spapr: Don't set the TM ibm, pa-features bit in PR KV
From: |
Anton Blanchard |
Subject: |
[Qemu-ppc] [PATCH] spapr: Don't set the TM ibm, pa-features bit in PR KVM mode |
Date: |
Mon, 4 Apr 2016 21:09:28 +1000 |
We don't support transactional memory in PR KVM, so don't tell
the OS that we do.
Signed-off-by: Anton Blanchard <address@hidden>
---
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index e7be21e..538bd87 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -696,6 +696,12 @@ static void spapr_populate_cpu_dt(CPUState *cs, void *fdt,
int offset,
} else /* env->mmu_model == POWERPC_MMU_2_07 */ {
pa_features = pa_features_207;
pa_size = sizeof(pa_features_207);
+
+ /* Don't enable TM in PR KVM mode */
+ if (kvm_enabled() &&
+ kvm_vm_check_extension(cs->kvm_state, KVM_CAP_PPC_GET_PVINFO)) {
+ pa_features[24] &= ~0x80;
+ }
}
if (env->ci_large_pages) {
pa_features[3] |= 0x20;