linux-kernel - Re: [PATCH 5/5] arm64/sysreg: Convert OSLAR

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Date:   Tue, 23 May 2023 13:51:41 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Oliver Upton <oliver.upton@...ux.dev>,
        Mark Brown <broonie@...nel.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kvmarm@...ts.linux.dev
Subject: Re: [PATCH 5/5] arm64/sysreg: Convert OSLAR_EL1 to automatic
 generation



On 5/23/23 13:43, Oliver Upton wrote:
> On Mon, May 22, 2023 at 05:22:44PM +0100, Mark Brown wrote:
>> Convert OSLAR_EL1 to automatic generation as per DDI0601 2023-03. No
>> functional change.
>>
>> Signed-off-by: Mark Brown <broonie@...nel.org>
>> ---
>>  arch/arm64/include/asm/sysreg.h | 3 ---
>>  arch/arm64/tools/sysreg         | 5 +++++
>>  2 files changed, 5 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
>> index 09de958e79ed..3b51e532caa9 100644
>> --- a/arch/arm64/include/asm/sysreg.h
>> +++ b/arch/arm64/include/asm/sysreg.h
>> @@ -140,9 +140,6 @@
>>  #define SYS_DBGWCRn_EL1(n)		sys_reg(2, 0, 0, n, 7)
>>  #define SYS_MDRAR_EL1			sys_reg(2, 0, 1, 0, 0)
>>  
>> -#define SYS_OSLAR_EL1			sys_reg(2, 0, 1, 0, 4)
>> -#define OSLAR_EL1_OSLK			BIT(0)
>> -
>>  #define SYS_OSLSR_EL1			sys_reg(2, 0, 1, 1, 4)
>>  #define OSLSR_EL1_OSLM_MASK		(BIT(3) | BIT(0))
>>  #define OSLSR_EL1_OSLM_NI		0
> 
> Should the OSLSR_EL1 definitions be rolled over to the generated scheme
> as well?

Agreed, was about to ask the same question :) Any reason it got skipped ?

> 
>> diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
>> index a5ae0e19fc9f..84df0b7feb45 100644
>> --- a/arch/arm64/tools/sysreg
>> +++ b/arch/arm64/tools/sysreg
>> @@ -83,6 +83,11 @@ Res0	5:1
>>  Field	0	SS
>>  EndSysreg
>>  
>> +Sysreg	OSLAR_EL1	2	0	1	0	4
>> +Res0	63:1
>> +Field	0	OSLK
>> +EndSysreg
>> +
>>  Sysreg ID_PFR0_EL1	3	0	0	1	0
>>  Res0	63:32
>>  UnsignedEnum	31:28	RAS
>>
>> -- 
>> 2.30.2
>>
>