Re: [PATCH v2 2/3] arm64: rsi: Add realm hash algorithm defines

[Yeoreum Yun <yeoreum.yun@arm.com>]

On Wed, Sep 30, 2026 at 11:39:36AM +0900, Kohei Enju wrote:
> On 09/29 17:57, Yeoreum Yun wrote:
> > From: Sami Mujawar <sami.mujawar@arm.com>
> > 
> > Add macro definitions for the hash algorithm identifiers, as
> > specified in the Realm Management Monitor (RMM) specification.
> > 
> > Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
> > ---
> >  include/linux/arm-smccc-rsi.h | 7 +++++++
> >  1 file changed, 7 insertions(+)
> > 
> > diff --git a/include/linux/arm-smccc-rsi.h b/include/linux/arm-smccc-rsi.h
> > index fddb77986f70..a83df2655808 100644
> > --- a/include/linux/arm-smccc-rsi.h
> > +++ b/include/linux/arm-smccc-rsi.h
> > @@ -144,6 +144,13 @@ struct realm_config {
> >  
> >  #endif /* __ASSEMBLER__ */
> >  
> > +/*
> > + * The RSI definition of the Hash Algorithm (as specified by the Secure
> > + * Hash Standard) returned in the realm_config data structure.
> > + */
> > +#define RSI_HASH_SHA_256	0
> > +#define RSI_HASH_SHA_512	1
> 
> Is it intentional to omit RSI_HASH_SHA_384 here? I realize it might not
> be implemented in RMM yet, but would it be worth adding the constant now
> for future support?

Acked. Thanks!

[...]
-- 
Sincerely,
Yeoreum Yun