linux-kernel - Re: [PATCH v5 02/16] riscv: add ISA extension parsing for Zimop

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Date: Wed, 29 May 2024 15:21:09 -0700
From: Charlie Jenkins <charlie@...osinc.com>
To: Clément Léger <cleger@...osinc.com>
Cc: Jonathan Corbet <corbet@....net>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Conor Dooley <conor@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Anup Patel <anup@...infault.org>, Shuah Khan <shuah@...nel.org>,
	Atish Patra <atishp@...shpatra.org>, linux-doc@...r.kernel.org,
	linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, kvm@...r.kernel.org,
	kvm-riscv@...ts.infradead.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v5 02/16] riscv: add ISA extension parsing for Zimop

On Wed, May 29, 2024 at 03:08:39PM -0700, Charlie Jenkins wrote:
> On Fri, May 17, 2024 at 04:52:42PM +0200, Clément Léger wrote:
> > Add parsing for Zimop ISA extension which was ratified in commit
> > 58220614a5f of the riscv-isa-manual.
> > 
> > Signed-off-by: Clément Léger <cleger@...osinc.com>
> > ---
> >  arch/riscv/include/asm/hwcap.h | 1 +
> >  arch/riscv/kernel/cpufeature.c | 1 +
> >  2 files changed, 2 insertions(+)
> > 
> > diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
> > index 1f2d2599c655..b1896dade74c 100644
> > --- a/arch/riscv/include/asm/hwcap.h
> > +++ b/arch/riscv/include/asm/hwcap.h
> > @@ -80,6 +80,7 @@
> >  #define RISCV_ISA_EXT_ZFA		71
> >  #define RISCV_ISA_EXT_ZTSO		72
> >  #define RISCV_ISA_EXT_ZACAS		73
> > +#define RISCV_ISA_EXT_ZIMOP		74
> 
> Since my changes for removing xandespmu haven't landed here yet I think
> you should keep RISCV_ISA_EXT_XANDESPMU in the diff here and make
> RISCV_ISA_EXT_ZIMOP have a key of 75. Palmer can probably resolve the
> conflicting keys when these two series are merged.
> 
> - Charlie

I missed that other patches in this series were based off my
xtheadvector changes. It's not in the cover letter that there is a
dependency though. What do you need from that series for this series to
work?

- Charlie

> 
> >  
> >  #define RISCV_ISA_EXT_XLINUXENVCFG	127
> >  
> > diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
> > index 2993318b8ea2..41f8ae22e7a0 100644
> > --- a/arch/riscv/kernel/cpufeature.c
> > +++ b/arch/riscv/kernel/cpufeature.c
> > @@ -241,6 +241,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
> >  	__RISCV_ISA_EXT_DATA(zihintntl, RISCV_ISA_EXT_ZIHINTNTL),
> >  	__RISCV_ISA_EXT_DATA(zihintpause, RISCV_ISA_EXT_ZIHINTPAUSE),
> >  	__RISCV_ISA_EXT_DATA(zihpm, RISCV_ISA_EXT_ZIHPM),
> > +	__RISCV_ISA_EXT_DATA(zimop, RISCV_ISA_EXT_ZIMOP),
> >  	__RISCV_ISA_EXT_DATA(zacas, RISCV_ISA_EXT_ZACAS),
> >  	__RISCV_ISA_EXT_DATA(zfa, RISCV_ISA_EXT_ZFA),
> >  	__RISCV_ISA_EXT_DATA(zfh, RISCV_ISA_EXT_ZFH),
> > -- 
> > 2.43.0
> > 
> > 
> > _______________________________________________
> > linux-riscv mailing list
> > linux-riscv@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-riscv
> 

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