Re: [PATCH v2] ACPI: ARM Performance Monitoring Unit Table (APMT) initial support

Lorenzo Pieralisi
2022-10-14T14:16:15Z

[Please Besar update my email address according to MAINTAINERS - I missed
this thread]

On Fri, Oct 14, 2022 at 11:59:38AM +0100, Sudeep Holla wrote:
> Hi Besar,
>
> On Wed, Sep 28, 2022 at 07:28:34PM -0500, Besar Wicaksono wrote:
> > ARM Performance Monitoring Unit Table describes the properties of PMU
> > support in ARM-based system. The APMT table contains a list of nodes,
> > each represents a PMU in the system that conforms to ARM CoreSight PMU
> > architecture. The properties of each node include information required
> > to access the PMU (e.g. MMIO base address, interrupt number) and also
> > identification. For more detailed information, please refer to the
> > specification below:
> > * APMT: https://developer.arm.com/documentation/den0117/latest
> > * ARM Coresight PMU:
> > https://developer.arm.com/documentation/ihi0091/latest
> >
> > The initial support adds the detection of APMT table and generic
> > infrastructure to create platform devices for ARM CoreSight PMUs.
> > Similar to IORT the root pointer of APMT is preserved during runtime
> > and each PMU platform device is given a pointer to the corresponding
> > APMT node.
> >
>
> This looks good to me know.
>
> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
>
> Hi Lorenzo,
>
> Not sure if there are any other arm specific ACPI changes in the queue
> for v6.2. Can you please add this too ?

We should just ask Catalin/Will to pick it up for the next kernel cycle,
if there is no need to repost we can just remind them in a couple
of weeks.

This also requires Rafael's review - at least to acknowledge the
change.

Thanks,
Lorenzo