linux-kernel - Re: [PATCH] arm64/sysreg: Correct the values for GICv4.1

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Message-ID: <c324b32d-a932-44c2-9d16-445b604d2eb5@arm.com>
Date: Mon, 22 Jul 2024 14:09:52 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: Raghavendra Rao Ananta <rananta@...gle.com>,
 Oliver Upton <oliver.upton@...ux.dev>, Marc Zyngier <maz@...nel.org>,
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
 Mark Brown <broonie@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
 linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH] arm64/sysreg: Correct the values for GICv4.1



On 7/19/24 03:25, Raghavendra Rao Ananta wrote:
> Currently, sysreg has value as 0b0010 for the presence of GICv4.1 in
> ID_PFR1_EL1 and ID_AA64PFR0_EL1, instead of 0b0011 as per ARM ARM.
> Hence, correct them to reflect ARM ARM.
> 
> Signed-off-by: Raghavendra Rao Ananta <rananta@...gle.com>
> ---
>  arch/arm64/tools/sysreg | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
> index a4c1dd4741a47..7ceaa1e0b4bc2 100644
> --- a/arch/arm64/tools/sysreg
> +++ b/arch/arm64/tools/sysreg
> @@ -149,7 +149,7 @@ Res0	63:32
>  UnsignedEnum	31:28	GIC
>  	0b0000	NI
>  	0b0001	GICv3
> -	0b0010	GICv4p1
> +	0b0011	GICv4p1
>  EndEnum
>  UnsignedEnum	27:24	Virt_frac
>  	0b0000	NI
> @@ -903,7 +903,7 @@ EndEnum
>  UnsignedEnum	27:24	GIC
>  	0b0000	NI
>  	0b0001	IMP
> -	0b0010	V4P1
> +	0b0011	V4P1
>  EndEnum
>  SignedEnum	23:20	AdvSIMD
>  	0b0000	IMP
> 
> base-commit: 0c3836482481200ead7b416ca80c68a29cfdaabd

This checks against ARM DDI 0487K.a and ddi0601/2024-06 XML.

Reviewed-by: Anshuman Khandual <anshuman.khandual@....com>