Re: [Xen-devel] [PATCH] xen/arm: Blacklist PMU with "arm, cortex-a53-pmu"

[Amit Tomer <amittomer25@xxxxxxxxx>]

Hello,

> Could we instead try to automatically blacklist any device using PPI?

Just tested following change:

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index d983677..0c82976 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -1289,6 +1289,10 @@ static int __init handle_device(struct domain
*d, struct dt_device_node *dev,
             return res;
         }

+        /* Don't process device using PPI source */
+        if ( res > 16 && res < 32)
+            return 0;
+
         res = map_irq_to_domain(d, res, need_mapping, dt_node_name(dev));
         if ( res )
             return res;

Would it be Ok ?

Thanks,
-Amit

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