Re: [PATCH] target/ppc: Use SMT4 small core chip type in POWER9/10 PVRs

[Cédric Le Goater]

On 5/15/23 18:01, Nicholas Piggin wrote:
> QEMU's PVR value for POWER9 DD2.0 has chip type 1, which is the SMT4
> "small core" type that OpenPOWER processors use. QEMU's PVR for all
> other POWER9/10 have chip type 0, which "enterprise" systems use.
>
> The difference does not really matter to QEMU (because it does not care
> about SMT mode in the target), but for consistency all PVRs should use
> the same chip type. We'll go with the SMT4 OpenPOWER type.
>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> ---
> This is a replacement for
>
> https://lists.gnu.org/archive/html/qemu-ppc/2022-03/msg00227.html
>
> But the chip type is changed to 1 instead of 0, because that's the
> more familiar SM4 / small core CPU.

Will small cores POWER10 CPU be available ?

Thanks,

C.


> Thanks,
> Nick
>
>   target/ppc/cpu-models.h | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/target/ppc/cpu-models.h b/target/ppc/cpu-models.h
> index 1326493a9a..a77e036b3a 100644
> --- a/target/ppc/cpu-models.h
> +++ b/target/ppc/cpu-models.h
> @@ -348,11 +348,11 @@ enum {
>       CPU_POWERPC_POWER8NVL_BASE     = 0x004C0000,
>       CPU_POWERPC_POWER8NVL_v10      = 0x004C0100,
>       CPU_POWERPC_POWER9_BASE        = 0x004E0000,
> -    CPU_POWERPC_POWER9_DD1         = 0x004E0100,
> +    CPU_POWERPC_POWER9_DD1         = 0x004E1100,
>       CPU_POWERPC_POWER9_DD20        = 0x004E1200,
>       CPU_POWERPC_POWER10_BASE       = 0x00800000,
> -    CPU_POWERPC_POWER10_DD1        = 0x00800100,
> -    CPU_POWERPC_POWER10_DD20       = 0x00800200,
> +    CPU_POWERPC_POWER10_DD1        = 0x00801100,
> +    CPU_POWERPC_POWER10_DD20       = 0x00801200,
>       CPU_POWERPC_970_v22            = 0x00390202,
>       CPU_POWERPC_970FX_v10          = 0x00391100,
>       CPU_POWERPC_970FX_v20          = 0x003C0200,