Re: [Qemu-devel] [PATCH] target-s390x: Implement lpp instruction

[Richard Henderson]

On 02/25/2017 12:50 AM, Miroslav Benes wrote:
> Linux arch/s390/kernel/head(64).S uses lpp instruction if it is
> available in facilities list provided by stfl/stfle instruction. This is
> the case of newer z/System generations and their qemu definition.
>
> Signed-off-by: Miroslav Benes <address@hidden>
> ---

I can't find LPP in my PoO 11th edition...

> +static ExitStatus op_lpp(DisasContext *s, DisasOps *o)
> +{
> +    check_privileged(s);
> +    potential_page_fault(s);
> +
> +    tcg_gen_st_i64(o->in2, cpu_env, offsetof(CPUS390XState, pp));

But you don't need the potential_page_fault, since this is not a store to guest 
memory.


r~