On Tue, Jun 19, 2018 at 05:31:58PM -0400, Babu Moger wrote:
> Enable TOPOEXT feature on EPYC CPU. This is required to support
> hyperthreading on VM guests. Also extend xlevel to 0x8000001E.
>
> Disable topoext on PC_COMPAT_2_12 and keep xlevel 0x8000000a.
>
> Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
> ---
> include/hw/i386/pc.h | 8 ++++++++
> target/i386/cpu.c | 10 ++++++----
> 2 files changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
> index fc8dedc..d0ebeb9 100644
> --- a/include/hw/i386/pc.h
> +++ b/include/hw/i386/pc.h
> @@ -303,6 +303,14 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
> .driver = TYPE_X86_CPU,\
> .property = "legacy-cache",\
> .value = "on",\
> + },{\
> + .driver = TYPE_X86_CPU,\
> + .property = "topoext",\
> + .value = "off",\
> + },{\
> + .driver = "EPYC-" TYPE_X86_CPU,\
> + .property = "xlevel",\
> + .value = stringify(0x8000000a),\
> },
EPYC-IBPB is missing, I will add it when committing. Thanks!
--
Eduardo
