Re: [Qemu-devel] [PATCH v3 15/22] target/arm: Add ARM_FEATURE_V7VE for v7 Virtualization Extensions

[Peter Maydell <peter.maydell@linaro.org>]

On 16 March 2018 at 20:31, Aaron Lindsay <alindsay@codeaurora.org> wrote:
> Signed-off-by: Aaron Lindsay <alindsay@codeaurora.org>
> ---
>  target/arm/cpu.c | 3 +++
>  target/arm/cpu.h | 1 +
>  2 files changed, 4 insertions(+)
>
> diff --git a/target/arm/cpu.c b/target/arm/cpu.c
> index b0d032c..e544f1d 100644
> --- a/target/arm/cpu.c
> +++ b/target/arm/cpu.c
> @@ -765,6 +765,7 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
>      /* Some features automatically imply others: */
>      if (arm_feature(env, ARM_FEATURE_V8)) {
>          set_feature(env, ARM_FEATURE_V7);
> +        set_feature(env, ARM_FEATURE_V7VE);
>          set_feature(env, ARM_FEATURE_ARM_DIV);
>          set_feature(env, ARM_FEATURE_LPAE);
>      }
> @@ -1481,6 +1482,7 @@ static void cortex_a7_initfn(Object *obj)
>
>      cpu->dtb_compatible = "arm,cortex-a7";
>      set_feature(&cpu->env, ARM_FEATURE_V7);
> +    set_feature(&cpu->env, ARM_FEATURE_V7VE);
>      set_feature(&cpu->env, ARM_FEATURE_VFP4);
>      set_feature(&cpu->env, ARM_FEATURE_NEON);
>      set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
> @@ -1526,6 +1528,7 @@ static void cortex_a15_initfn(Object *obj)
>
>      cpu->dtb_compatible = "arm,cortex-a15";
>      set_feature(&cpu->env, ARM_FEATURE_V7);
> +    set_feature(&cpu->env, ARM_FEATURE_V7VE);
>      set_feature(&cpu->env, ARM_FEATURE_VFP4);
>      set_feature(&cpu->env, ARM_FEATURE_NEON);
>      set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
> diff --git a/target/arm/cpu.h b/target/arm/cpu.h
> index fb2f983..cc1e2fb 100644
> --- a/target/arm/cpu.h
> +++ b/target/arm/cpu.h
> @@ -1439,6 +1439,7 @@ enum arm_features {
>      ARM_FEATURE_OMAPCP, /* OMAP specific CP15 ops handling.  */
>      ARM_FEATURE_THUMB2EE,
>      ARM_FEATURE_V7MP,    /* v7 Multiprocessing Extensions */
> +    ARM_FEATURE_V7VE,    /* v7 with Virtualization Extensions */
>      ARM_FEATURE_V4T,
>      ARM_FEATURE_V5,
>      ARM_FEATURE_STRONGARM,

What's the difference between this and ARM_FEATURE_EL2 ?

thanks
-- PMM