Re: [PATCH v25 02/10] hw/arm/virt: Introduce a RAS machine option

[Igor Mammedov <imammedo@redhat.com>]

On Fri, 10 Apr 2020 19:46:31 +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.
> 
> 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>

Reviewed-by: Igor Mammedov <imammedo@redhat.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 7dc96ab..20409b9 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -1960,6 +1960,20 @@ static void virt_set_acpi(Object *obj, Visitor *v, const char *name,
>      visit_type_OnOffAuto(v, name, &vms->acpi, errp);
>  }
>  
> +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);
> @@ -2284,6 +2298,15 @@ 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 60b2f52..6401662 100644
> --- a/include/hw/arm/virt.h
> +++ b/include/hw/arm/virt.h
> @@ -131,6 +131,7 @@ typedef struct {
>      bool highmem_ecam;
>      bool its;
>      bool virt;
> +    bool ras;
>      OnOffAuto acpi;
>      VirtGICType gic_version;
>      VirtIOMMUType iommu;