Re: [PATCH v24 02/10] hw/arm/virt: Introduce a RAS machine option

[Igor Mammedov <imammedo@redhat.com>]

On Mon, 17 Feb 2020 21:12:40 +0800
Dongjiu Geng <gengdongjiu@huawei.com> wrote:

> RAS Virtualization feature is not supported now, so add a RAS machine

> option and disable it by default.
             ^^^^

this doesn't match the patch.

I'd rephrase it as:

... feature is disabled by default ..
add an option so user could enable it with

   -machine virt,ras=on


> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
> Signed-off-by: Xiang Zheng <zhengxiang9@huawei.com>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> ---
>  hw/arm/virt.c         | 23 +++++++++++++++++++++++
>  include/hw/arm/virt.h |  1 +
>  2 files changed, 24 insertions(+)
> 
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index f788fe2..9555b8b 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -1823,6 +1823,20 @@ static void virt_set_its(Object *obj, bool value, Error **errp)
>      vms->its = value;
>  }
>  
> +static bool virt_get_ras(Object *obj, Error **errp)
> +{
> +    VirtMachineState *vms = VIRT_MACHINE(obj);
> +
> +    return vms->ras;
> +}
> +
> +static void virt_set_ras(Object *obj, bool value, Error **errp)
> +{
> +    VirtMachineState *vms = VIRT_MACHINE(obj);
> +
> +    vms->ras = value;
> +}
> +
>  static char *virt_get_gic_version(Object *obj, Error **errp)
>  {
>      VirtMachineState *vms = VIRT_MACHINE(obj);
> @@ -2126,6 +2140,15 @@ static void virt_instance_init(Object *obj)
>                                      "Valid values are none and smmuv3",
>                                      NULL);
>  
> +    /* Default disallows RAS instantiation */
> +    vms->ras = false;
> +    object_property_add_bool(obj, "ras", virt_get_ras,
> +                             virt_set_ras, NULL);
> +    object_property_set_description(obj, "ras",
> +                                    "Set on/off to enable/disable reporting host memory errors "
> +                                    "to a KVM guest using ACPI and guest external abort exceptions",
> +                                    NULL);
> +
>      vms->irqmap = a15irqmap;
>  
>      virt_flash_create(vms);
> diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
> index 71508bf..c32b7c7 100644
> --- a/include/hw/arm/virt.h
> +++ b/include/hw/arm/virt.h
> @@ -123,6 +123,7 @@ typedef struct {
>      bool highmem_ecam;
>      bool its;
>      bool virt;
> +    bool ras;
>      int32_t gic_version;
>      VirtIOMMUType iommu;
>      struct arm_boot_info bootinfo;