linux-kernel - Re: [PATCH 01/10] arm64: sysreg: Add new PMSIDR_EL1 and PMSFCR

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Message-ID: <8518b861-326d-472f-b6ff-3cda41517587@linaro.org>
Date: Mon, 19 May 2025 09:16:50 +0100
From: James Clark <james.clark@...aro.org>
To: Marc Zyngier <maz@...nel.org>
Cc: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
 Mark Rutland <mark.rutland@....com>, Peter Zijlstra <peterz@...radead.org>,
 Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>,
 Namhyung Kim <namhyung@...nel.org>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
 Adrian Hunter <adrian.hunter@...el.com>, Jonathan Corbet <corbet@....net>,
 Oliver Upton <oliver.upton@...ux.dev>, Joey Gouly <joey.gouly@....com>,
 Suzuki K Poulose <suzuki.poulose@....com>, Zenghui Yu
 <yuzenghui@...wei.com>, leo.yan@....com,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-perf-users@...r.kernel.org, linux-doc@...r.kernel.org,
 kvmarm@...ts.linux.dev
Subject: Re: [PATCH 01/10] arm64: sysreg: Add new PMSIDR_EL1 and PMSFCR_EL1
 fields



On 16/05/2025 3:38 pm, Marc Zyngier wrote:
> On Tue, 06 May 2025 12:41:33 +0100,
> James Clark <james.clark@...aro.org> wrote:
>>
>> Add new fields and registers that are introduced for the features
>> FEAT_SPE_CRR (call return records), FEAT_SPE_EFT (extended filtering),
>> FEAT_SPE_FPF (floating point flag), FEAT_SPE_FDS (data source
>> filtering), FEAT_SPE_ALTCLK and FEAT_SPE_SME.
>>
>> Signed-off-by: James Clark <james.clark@...aro.org>
>> ---
>>   arch/arm64/tools/sysreg | 26 ++++++++++++++++++++++----
>>   1 file changed, 22 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
>> index bdf044c5d11b..80d57c83a5f5 100644
>> --- a/arch/arm64/tools/sysreg
>> +++ b/arch/arm64/tools/sysreg
>> @@ -2205,11 +2205,20 @@ Field	0	RND
>>   EndSysreg
>>   
>>   Sysreg	PMSFCR_EL1	3	0	9	9	4
>> -Res0	63:19
>> +Res0	63:53
>> +Field	52	SIMDm
>> +Field	51	FPm
>> +Field	50	STm
>> +Field	49	LDm
>> +Field	48	Bm
>> +Res0	47:21
>> +Field	20	SIMD
>> +Field	19	FP
>>   Field	18	ST
>>   Field	17	LD
>>   Field	16	B
>> -Res0	15:4
>> +Res0	15:5
>> +Field	4	FDS
>>   Field	3	FnE
>>   Field	2	FL
>>   Field	1	FT
>> @@ -2226,7 +2235,12 @@ Field	15:0	MINLAT
>>   EndSysreg
>>   
>>   Sysreg	PMSIDR_EL1	3	0	9	9	7
>> -Res0	63:25
>> +Res0	63:33
>> +Field	32	SME
>> +Field	31:28	ALTCLK
>> +Field	27	FPF
>> +Field	26	EFT
>> +Field	25	CRR
> 
> These are described as enumerations in the JSON file (see [1]).
> 
> 	M.
> 
> [1] https://lore.kernel.org/all/20250506164348.346001-7-maz@kernel.org
> 

So they are. I'll take your commit and double check the other new ones 
against the json.

Thanks
James