linux-kernel - Re: [PATCH 1/4] cxl: Add function to count regblocks of a given type.

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Message-ID: <20230307022852.bhnjvftcl3hffnp4@offworld>
Date:   Mon, 6 Mar 2023 18:28:52 -0800
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Jonathan Cameron <Jonathan.Cameron@...wei.com>
Cc:     linux-cxl@...r.kernel.org, peterz@...radead.org, mingo@...hat.com,
        acme@...nel.org, mark.rutland@....com, will@...nel.org,
        dan.j.williams@...el.com, bwidawsk@...nel.org, ira.weiny@...el.com,
        vishal.l.verma@...el.com, alison.schofield@...el.com,
        linuxarm@...wei.com, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] cxl: Add function to count regblocks of a given type.

On Fri, 03 Mar 2023, Jonathan Cameron wrote:

>Until the recently release CXL 3.0 specification, there
>was only ever one instance of any given register block pointed
>to by the Register Block Locator DVSEC. Now, the specification allows
>for multiple CXL PMU instances, each with their own register block.
>
>To enable this add an index parameter to cxl_find_regblock()
>and use that to implement cxl_count_regblock().
>
>Reviewed-by: Dave Jiang <dave.jiang@...el.com>
>Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

Reviewed-by: Davidlohr Bueso <dave@...olabs.net>