On Fri, 2022-09-02 at 09:55 +0200, Pierre Morel wrote:
> The guest can use the STSI instruction to get a buffer filled
> with the CPU topology description.
>
> Let us implement the STSI instruction for the basis CPU topology
> level, level 2.
>
> Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
> ---
> hw/s390x/cpu-topology.c | 4 ++
> include/hw/s390x/cpu-topology.h | 5 ++
> target/s390x/cpu.h | 49 +++++++++++++++
> target/s390x/cpu_topology.c | 108 ++++++++++++++++++++++++++++++++
> target/s390x/kvm/kvm.c | 6 +-
> target/s390x/meson.build | 1 +
> 6 files changed, 172 insertions(+), 1 deletion(-)
> create mode 100644 target/s390x/cpu_topology.c
>
[...]
> diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
[...]
> +static char *fill_tle_cpu(char *p, uint64_t mask, int origin)
> +{
> + SysIBTl_cpu *tle = (SysIBTl_cpu *)p;
> +
> + tle->nl = 0;
> + tle->dedicated = 1;
> + tle->polarity = S390_TOPOLOGY_POLARITY_H;
> + tle->type = S390_TOPOLOGY_CPU_TYPE;
> + tle->origin = origin * 64;
origin is a multibyte field too, so needs a conversion too.
> + tle->mask = be64_to_cpu(mask);
> + return p + sizeof(*tle);
> +}
> +
[...]
