[Qemu-devel] [PATCH v2] spapr: Don't set the TM ibm, pa-features bit in PR KVM mode

[haris iqbal]

On Sat, Apr 30, 2016 at 6:18 AM, Anton Blanchard <anton at samba.org> wrote:
> We don't support transactional memory in PR KVM, so don't tell
> the OS that we do.
>
> Signed-off-by: Anton Blanchard <anton at samba.org>
> ---
>
> v2: Fix build with CONFIG_KVM disabled, noticed by Alex.
>
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index b69995e..dc3e3c9 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -696,6 +696,14 @@ 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);
> +
> +#ifdef CONFIG_KVM
> +        /* 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;
> +        }
> +#endif
>      }
>      if (env->ci_large_pages) {
>          pa_features[3] |= 0x20;
>

This email was put in the spam folder by gmail. The message said "It
has a from address in samba.org but has failed samba.org's required
tests for authentication". Just bringing this to peoples attention. I
thought a patch might go unnoticed else.

-- 

With regards,

Md Haris Iqbal,
Placement Coordinator, MTech IT
NITK Surathkal,
Contact: +91 8861996962