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

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Message-ID: <4d23f17e-cc1e-45e3-9ca2-a884baacf207@rivosinc.com>
Date: Thu, 30 May 2024 10:12:39 +0200
From: Clément Léger <cleger@...osinc.com>
To: Charlie Jenkins <charlie@...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 30/05/2024 00:21, Charlie Jenkins wrote:
> 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?

Hey Charlie, I'm not based directly on any of your series, but on
riscv/for-next which probably already contains your patches.

Clément

> 
> - 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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