Re: [PATCH v2 1/2] target/ppc/cpu-models: Rename power5+ and power7+ for new QOM naming rules

[Harsh Prateek Bora <harshpb@linux.ibm.com>]

On 1/17/24 19:40, Thomas Huth wrote:
> The character "+" is now forbidden in QOM device names (see commit
> b447378e1217 - "Limit type names to alphanumerical and some few special
> characters"). For the "power5+" and "power7+" CPU names, there is
> currently a hack in type_name_is_valid() to still allow them for
> compatibility reasons. However, there is a much nicer solution for this:
> Simply use aliases! This way we can still support the old names without
> the need for the ugly hack in type_name_is_valid().
> 
> Signed-off-by: Thomas Huth <thuth@redhat.com>

Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>

> ---
>   hw/ppc/spapr_cpu_core.c |  4 ++--
>   qom/object.c            |  4 ----
>   target/ppc/cpu-models.c | 10 ++++++----
>   3 files changed, 8 insertions(+), 10 deletions(-)
> 
> diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c
> index 5aa1ed474a..0c0fb3f1b0 100644
> --- a/hw/ppc/spapr_cpu_core.c
> +++ b/hw/ppc/spapr_cpu_core.c
> @@ -389,9 +389,9 @@ static const TypeInfo spapr_cpu_core_type_infos[] = {
>       DEFINE_SPAPR_CPU_CORE_TYPE("970_v2.2"),
>       DEFINE_SPAPR_CPU_CORE_TYPE("970mp_v1.0"),
>       DEFINE_SPAPR_CPU_CORE_TYPE("970mp_v1.1"),
> -    DEFINE_SPAPR_CPU_CORE_TYPE("power5+_v2.1"),
> +    DEFINE_SPAPR_CPU_CORE_TYPE("power5p_v2.1"),
>       DEFINE_SPAPR_CPU_CORE_TYPE("power7_v2.3"),
> -    DEFINE_SPAPR_CPU_CORE_TYPE("power7+_v2.1"),
> +    DEFINE_SPAPR_CPU_CORE_TYPE("power7p_v2.1"),
>       DEFINE_SPAPR_CPU_CORE_TYPE("power8_v2.0"),
>       DEFINE_SPAPR_CPU_CORE_TYPE("power8e_v2.1"),
>       DEFINE_SPAPR_CPU_CORE_TYPE("power8nvl_v1.0"),
> diff --git a/qom/object.c b/qom/object.c
> index 654e1afaf2..2c4c64d2b6 100644
> --- a/qom/object.c
> +++ b/qom/object.c
> @@ -160,10 +160,6 @@ static bool type_name_is_valid(const char *name)
>   
>       /* Allow some legacy names with '+' in it for compatibility reasons */
>       if (name[plen] == '+') {
> -        if (plen == 6 && g_str_has_prefix(name, "power")) {
> -            /* Allow "power5+" and "power7+" CPU names*/
> -            return true;
> -        }
>           if (plen >= 17 && g_str_has_prefix(name, "Sun-UltraSparc-I")) {
>               /* Allow "Sun-UltraSparc-IV+" and "Sun-UltraSparc-IIIi+" */
>               return true;
> diff --git a/target/ppc/cpu-models.c b/target/ppc/cpu-models.c
> index 7dbb47de64..36e465b390 100644
> --- a/target/ppc/cpu-models.c
> +++ b/target/ppc/cpu-models.c
> @@ -716,11 +716,11 @@
>                   "PowerPC 970MP v1.0")
>       POWERPC_DEF("970mp_v1.1",    CPU_POWERPC_970MP_v11,              970,
>                   "PowerPC 970MP v1.1")
> -    POWERPC_DEF("power5+_v2.1",  CPU_POWERPC_POWER5P_v21,            POWER5P,
> +    POWERPC_DEF("power5p_v2.1",  CPU_POWERPC_POWER5P_v21,            POWER5P,
>                   "POWER5+ v2.1")
>       POWERPC_DEF("power7_v2.3",   CPU_POWERPC_POWER7_v23,             POWER7,
>                   "POWER7 v2.3")
> -    POWERPC_DEF("power7+_v2.1",  CPU_POWERPC_POWER7P_v21,            POWER7,
> +    POWERPC_DEF("power7p_v2.1",  CPU_POWERPC_POWER7P_v21,            POWER7,
>                   "POWER7+ v2.1")
>       POWERPC_DEF("power8e_v2.1",  CPU_POWERPC_POWER8E_v21,            POWER8,
>                   "POWER8E v2.1")
> @@ -902,10 +902,12 @@ PowerPCCPUAlias ppc_cpu_aliases[] = {
>       { "970", "970_v2.2" },
>       { "970fx", "970fx_v3.1" },
>       { "970mp", "970mp_v1.1" },
> -    { "power5+", "power5+_v2.1" },
> +    { "power5+", "power5p_v2.1" },
> +    { "power5+_v2.1", "power5p_v2.1" },
>       { "power5gs", "power5+_v2.1" },
>       { "power7", "power7_v2.3" },
> -    { "power7+", "power7+_v2.1" },
> +    { "power7+", "power7p_v2.1" },
> +    { "power7+_v2.1", "power7p_v2.1" },
>       { "power8e", "power8e_v2.1" },
>       { "power8", "power8_v2.0" },
>       { "power8nvl", "power8nvl_v1.0" },