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Re: [PATCH v5 3/3] xen: Expose the PMU to the guests

Hi Michal,

On 12/10/2021 09:13, Michal Orzel wrote:
diff --git a/SUPPORT.md b/SUPPORT.md
index 317392d8f3..2f1f60c49a 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -256,6 +256,15 @@ from dom0.
Status, x86: Tech Preview +### vPMU support

There is already a section vPMU that is meant to be generic. At the moment it mentions the status support for x86 but not Arm. So can you fold the status for Arm there?

+Support for accessing PMU registers from the guests.
+There is no interrupt support and Xen will not save/restore
+the register values on context switches.
+Disabled by default (enable with guest parameter).
+    Status, ARM: Experimental

The rest of the patch looks good to me.


Julien Grall



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