Re: [PATCH 1/2] util: Add lasx cpuinfo for loongarch64

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

On 5/6/24 11:32, Bibo Mao wrote:
> Lasx is 256bit vector FPU capability, lsx is 128bit vector VFP. lsx
> is added already, lasx is added here.
> 
> Signed-off-by: Bibo Mao <maobibo@loongson.cn>
> ---
>   host/include/loongarch64/host/cpuinfo.h | 1 +
>   util/cpuinfo-loongarch.c                | 1 +
>   2 files changed, 2 insertions(+)
> 
> diff --git a/host/include/loongarch64/host/cpuinfo.h b/host/include/loongarch64/host/cpuinfo.h
> index fab664a10b..d7bf27501d 100644
> --- a/host/include/loongarch64/host/cpuinfo.h
> +++ b/host/include/loongarch64/host/cpuinfo.h
> @@ -8,6 +8,7 @@
>   
>   #define CPUINFO_ALWAYS          (1u << 0)  /* so cpuinfo is nonzero */
>   #define CPUINFO_LSX             (1u << 1)
> +#define CPUINFO_LASX            (1u << 2)
>   
>   /* Initialized with a constructor. */
>   extern unsigned cpuinfo;
> diff --git a/util/cpuinfo-loongarch.c b/util/cpuinfo-loongarch.c
> index 08b6d7460c..bb1f7f698b 100644
> --- a/util/cpuinfo-loongarch.c
> +++ b/util/cpuinfo-loongarch.c
> @@ -29,6 +29,7 @@ unsigned __attribute__((constructor)) cpuinfo_init(void)
>   
>       info = CPUINFO_ALWAYS;
>       info |= (hwcap & HWCAP_LOONGARCH_LSX ? CPUINFO_LSX : 0);
> +    info |= (hwcap & HWCAP_LOONGARCH_LASX ? CPUINFO_LASX : 0);
>   
>       cpuinfo = info;
>       return info;

This is 
https://lore.kernel.org/qemu-devel/20240527211912.14060-6-richard.henderson@linaro.org/