Re: [Qemu-devel] [PATCH] spapr: Don't set the TM ibm, pa-features bit in PR KVM mode

[Alexander Graf]

> Am 04.04.2016 um 13:09 schrieb Anton Blanchard <address@hidden>:
> 
> 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))

Does this compile on non-kvm systems?

Alex

> {
> +            pa_features[24] &= ~0x80;
> +        }
>     }
>     if (env->ci_large_pages) {
>         pa_features[3] |= 0x20;