Re: [PATCH v2] ARM: vfp: Add missing VFP instructions to neon_support_hook

[Mark-PK Tsai (蔡沛剛)]

On Mon, 2023-09-25 at 21:17 +0800, Mark-PK Tsai wrote:
> Add the missing "Unconditional Advanced SIMD and floating-point
> instructions" in [1] to the VFP undef hook.
> 
> This commit addresses the issue reported in [2], where
> executing the vudot instruction on a platform with FEAT_DotProd
> support resulted in an undefined instruction error.
> 
> Link: 
> https://developer.arm.com/documentation/ddi0597/2023-06/?lang=en [1]
> Link: 
> https://lore.kernel.org/lkml/20230920083907.30479-1-mark-pk.tsai@xxxxxxxxxxxx/
>  [2]
> Signed-off-by: Mark-PK Tsai <mark-pk.tsai@xxxxxxxxxxxx>
> ---
>  arch/arm/vfp/vfpmodule.c | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
> index 7e8773a2d99d..b68efe643a12 100644
> --- a/arch/arm/vfp/vfpmodule.c
> +++ b/arch/arm/vfp/vfpmodule.c
> @@ -800,6 +800,24 @@ static struct undef_hook neon_support_hook[] =
> {{
>  	.cpsr_mask	= PSR_T_BIT,
>  	.cpsr_val	= PSR_T_BIT,
>  	.fn		= vfp_support_entry,
> +}, {
> +	.instr_mask	= 0xff000800,
> +	.instr_val	= 0xfc000800,
> +	.cpsr_mask	= 0,
> +	.cpsr_val	= 0,
> +	.fn		= vfp_support_entry,
> +}, {
> +	.instr_mask	= 0xff000800,
> +	.instr_val	= 0xfd000800,
> +	.cpsr_mask	= 0,
> +	.cpsr_val	= 0,
> +	.fn		= vfp_support_entry,
> +}, {
> +	.instr_mask	= 0xff000800,
> +	.instr_val	= 0xfe000800,
> +	.cpsr_mask	= 0,
> +	.cpsr_val	= 0,
> +	.fn		= vfp_support_entry,
>  }};

Could someone please kindly review this patch?
Thanks.