linux-kernel - Re: [PATCH V2 02/46] arm64/sysreg: Update register fields for ID_AA64MMFR4

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Message-ID: <ed883097-c1a1-498d-97af-f0a306893b26@redhat.com>
Date: Wed, 18 Dec 2024 15:40:16 +0100
From: Eric Auger <eauger@...hat.com>
To: Anshuman Khandual <anshuman.khandual@....com>,
 linux-kernel@...r.kernel.org, kvmarm@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, maz@...nel.org
Cc: ryan.roberts@....com, Oliver Upton <oliver.upton@...ux.dev>,
 James Morse <james.morse@....com>, Suzuki K Poulose
 <suzuki.poulose@....com>, Catalin Marinas <catalin.marinas@....com>,
 Will Deacon <will@...nel.org>, Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH V2 02/46] arm64/sysreg: Update register fields for
 ID_AA64MMFR4_EL1



On 12/10/24 06:52, Anshuman Khandual wrote:
> This updates ID_AA64MMFR4_EL1 register as per the definitions based on
> DDI0601 2024-09.
> 
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will@...nel.org>
> Cc: Mark Brown <broonie@...nel.org>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
Reviewed-by: Eric Auger <eric.auger@...hat.com>

Eric

> ---
>  arch/arm64/tools/sysreg | 19 ++++++++++++++++---
>  1 file changed, 16 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
> index a6cbe0dcd63b..b5bda7c94689 100644
> --- a/arch/arm64/tools/sysreg
> +++ b/arch/arm64/tools/sysreg
> @@ -1872,12 +1872,21 @@ EndEnum
>  EndSysreg
>  
>  Sysreg	ID_AA64MMFR4_EL1	3	0	0	7	4
> -Res0	63:40
> +Res0	63:48
> +UnsignedEnum	47:44	SRMASK
> +	0b0000	NI
> +	0b0001	IMP
> +EndEnum
> +Res0	43:40
>  UnsignedEnum	39:36	E3DSE
>  	0b0000	NI
>  	0b0001	IMP
>  EndEnum
> -Res0	35:28
> +Res0	35:32
> +UnsignedEnum	31:28	RMEGDI
> +	0b0000	NI
> +	0b0001	IMP
> +EndEnum
>  SignedEnum	27:24	E2H0
>  	0b0000	IMP
>  	0b1110	NI_NV1
> @@ -1886,6 +1895,7 @@ EndEnum
>  UnsignedEnum	23:20	NV_frac
>  	0b0000	NV_NV2
>  	0b0001	NV2_ONLY
> +	0b0010	SOFTWARE
>  EndEnum
>  UnsignedEnum	19:16	FGWTE3
>  	0b0000	NI
> @@ -1905,7 +1915,10 @@ SignedEnum	7:4	EIESB
>  	0b0010	ToELx
>  	0b1111	ANY
>  EndEnum
> -Res0	3:0
> +UnsignedEnum	3:0	PoPS
> +	0b0000	NI
> +	0b0001	IMP
> +EndEnum
>  EndSysreg
>  
>  Sysreg	SCTLR_EL1	3	0	1	0	0