Re: [PATCH v6] s390x: Rename and use constants for short PSW address and mask

[David Hildenbrand <david@redhat.com>]

On 27.02.20 10:23, Janosch Frank wrote:
> Let's rename PSW_MASK_ESA_ADDR to PSW_MASK_SHORT_ADDR because we're
> not working with a ESA PSW which would not support the extended
> addressing bit. Also let's actually use it.
> 
> Additionally we introduce PSW_MASK_SHORT_CTRL and use it throughout
> the codebase.
> 
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
> ---
>  hw/s390x/ipl.c     | 2 +-
>  target/s390x/cpu.c | 4 ++--
>  target/s390x/cpu.h | 3 ++-
>  3 files changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
> index 7773499d7f..e36f770a72 100644
> --- a/hw/s390x/ipl.c
> +++ b/hw/s390x/ipl.c
> @@ -179,7 +179,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
>                  /* if not Linux load the address of the (short) IPL PSW */
>                  ipl_psw = rom_ptr(4, 4);
>                  if (ipl_psw) {
> -                    pentry = be32_to_cpu(*ipl_psw) & 0x7fffffffUL;
> +                    pentry = be32_to_cpu(*ipl_psw) & PSW_MASK_SHORT_ADDR;
>                  } else {
>                      error_setg(&err, "Could not get IPL PSW");
>                      goto error;
> diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
> index 8da1905485..3dd396e870 100644
> --- a/target/s390x/cpu.c
> +++ b/target/s390x/cpu.c
> @@ -78,13 +78,13 @@ static void s390_cpu_load_normal(CPUState *s)
>      S390CPU *cpu = S390_CPU(s);
>      uint64_t spsw = ldq_phys(s->as, 0);
>  
> -    cpu->env.psw.mask = spsw & 0xffffffff80000000ULL;
> +    cpu->env.psw.mask = spsw & PSW_MASK_SHORT_CTRL;
>      /*
>       * Invert short psw indication, so SIE will report a specification
>       * exception if it was not set.
>       */
>      cpu->env.psw.mask ^= PSW_MASK_SHORTPSW;
> -    cpu->env.psw.addr = spsw & 0x7fffffffULL;
> +    cpu->env.psw.addr = spsw & PSW_MASK_SHORT_ADDR;
>  
>      s390_cpu_set_state(S390_CPU_STATE_OPERATING, cpu);
>  }
> diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
> index 8a557fd8d1..1d17709d6e 100644
> --- a/target/s390x/cpu.h
> +++ b/target/s390x/cpu.h
> @@ -276,7 +276,8 @@ extern const VMStateDescription vmstate_s390_cpu;
>  #define PSW_MASK_RI             0x0000008000000000ULL
>  #define PSW_MASK_64             0x0000000100000000ULL
>  #define PSW_MASK_32             0x0000000080000000ULL
> -#define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
> +#define PSW_MASK_SHORT_ADDR     0x000000007fffffffULL
> +#define PSW_MASK_SHORT_CTRL     0xffffffff80000000ULL
>  
>  #undef PSW_ASC_PRIMARY
>  #undef PSW_ASC_ACCREG
> 

Reviewed-by: David Hildenbrand <david@redhat.com>

-- 
Thanks,

David / dhildenb