Re: [PATCH v2 10/13] target/riscv: Enable sscofpmf for bare cpu by default

[Andrew Jones <ajones@ventanamicro.com>]

On Tue, Aug 06, 2024 at 11:51:20AM GMT, Alistair Francis wrote:
> On Wed, Jul 24, 2024 at 9:33 AM Atish Patra <atishp@rivosinc.com> wrote:
> >
> > Sscofpmf has been supported on virt machine for a long time. It is
> > required to enable profiling on virt machines. Let's enable it
> > by default for ease of usage.
> >
> > Signed-off-by: Atish Patra <atishp@rivosinc.com>
> > ---
> >  target/riscv/cpu.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> > index 1731dc461376..393d1d67120e 100644
> > --- a/target/riscv/cpu.c
> > +++ b/target/riscv/cpu.c
> > @@ -494,6 +494,7 @@ static void rv64_base_cpu_init(Object *obj)
> >      env->priv_ver = PRIV_VERSION_LATEST;
> >  #ifndef CONFIG_USER_ONLY
> >      set_satp_mode_max_supported(RISCV_CPU(obj), VM_1_10_SV57);
> > +    cpu->cfg.ext_sscofpmf = true;
> 
> Unfortunately we don't want to do this, the base CPU should be bare
> bones and then users can enable extensions.

But we do want to enable stuff by default in the 'max' cpu type.

Thanks,
drew