Re: [PATCH] xen: arm: Do not expose PMU to domain 0

[Julien Grall <julien.grall@citrix.com>]

Hi Ian,

On 04/06/2015 17:49, Ian Campbell wrote:
> It uses a PPI which we cannot route to a guest, and will surely need
> more support than just that anyway.
>
> I noticed this on Mustang with UEFI where the built in DTB contains a
> node of this type.
>
> Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
> ---
>   xen/arch/arm/domain_build.c |    1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
> index 1e545fe..8e87315 100644
> --- a/xen/arch/arm/domain_build.c
> +++ b/xen/arch/arm/domain_build.c
> @@ -1105,6 +1105,7 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo,
>           DT_MATCH_COMPATIBLE("multiboot,module"),
>           DT_MATCH_COMPATIBLE("arm,psci"),
>           DT_MATCH_COMPATIBLE("arm,psci-0.2"),
> +        DT_MATCH_COMPATIBLE("arm,armv8-pmuv3"),

Will you are here, can you blacklist at list "arm,cortex-a15-pmu" and 
"arm,cortex-a7-pmu"?

I suspect we would have the same problem with them.

Regards,

-- 
Julien Grall