[PATCH v2 06/13] KVM: arm64: Add feature register flag definitions

Fuad Tabba tabba at google.com
Thu Jul 1 07:31:54 PDT 2021


Hi Will,

On Thu, Jul 1, 2021 at 2:22 PM Will Deacon <will at kernel.org> wrote:
>
> On Tue, Jun 15, 2021 at 02:39:43PM +0100, Fuad Tabba wrote:
> > Add feature register flag definitions to clarify which features
> > might be supported.
> >
> > No functional change intended.
> >
> > Signed-off-by: Fuad Tabba <tabba at google.com>
> > ---
> >  arch/arm64/include/asm/sysreg.h | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> >
> > diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
> > index 65d15700a168..42bcc5102d10 100644
> > --- a/arch/arm64/include/asm/sysreg.h
> > +++ b/arch/arm64/include/asm/sysreg.h
> > @@ -789,6 +789,10 @@
> >  #define ID_AA64PFR0_FP_SUPPORTED     0x0
> >  #define ID_AA64PFR0_ASIMD_NI         0xf
> >  #define ID_AA64PFR0_ASIMD_SUPPORTED  0x0
> > +#define ID_AA64PFR0_EL3_64BIT_ONLY   0x1
> > +#define ID_AA64PFR0_EL3_32BIT_64BIT  0x2
> > +#define ID_AA64PFR0_EL2_64BIT_ONLY   0x1
> > +#define ID_AA64PFR0_EL2_32BIT_64BIT  0x2
> >  #define ID_AA64PFR0_EL1_64BIT_ONLY   0x1
> >  #define ID_AA64PFR0_EL1_32BIT_64BIT  0x2
> >  #define ID_AA64PFR0_EL0_64BIT_ONLY   0x1
>
> Maybe just consolidate all of these into two definitions:
>
>   #define ID_AA64PFR0_ELx_64BIT_ONLY   0x1
>   #define ID_AA64PFR0_ELx_32BIT_64BIT  0x2

Will do.

Cheers,
/fuad

> ?
>
> Will



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