linux-kernel - Re: [RFC PATCH v2 07/10] perf: RISC-V: Move T-Head PMU to CPU feature alternative framework

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Message-ID: <20231123-edge-skinless-3ec70c2958c9@wendy>
Date:   Thu, 23 Nov 2023 14:32:44 +0000
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     Samuel Holland <samuel@...lland.org>
CC:     Conor Dooley <conor@...nel.org>,
        Yu-Chien Peter Lin <peterlin@...estech.com>,
        <mark.rutland@....com>, <heiko@...ech.de>, <atishp@...shpatra.org>,
        <guoren@...nel.org>, <jszhang@...nel.org>,
        <linux-riscv@...ts.infradead.org>, <will@...nel.org>,
        <anup@...infault.org>, <dminus@...estech.com>,
        <dylan@...estech.com>, <ajones@...tanamicro.com>,
        <aou@...s.berkeley.edu>, <prabhakar.mahadev-lad.rj@...renesas.com>,
        <locus84@...estech.com>, <tim609@...estech.com>,
        <paul.walmsley@...ive.com>, <linux-arm-kernel@...ts.infradead.org>,
        <rdunlap@...radead.org>, <linux-kernel@...r.kernel.org>,
        <evan@...osinc.com>, <palmer@...belt.com>,
        Jernej Skrabec <jernej.skrabec@...il.com>
Subject: Re: [RFC PATCH v2 07/10] perf: RISC-V: Move T-Head PMU to CPU
 feature alternative framework

On Wed, Nov 22, 2023 at 07:43:09PM -0600, Samuel Holland wrote:

> PMU support is not required to boot, and it didn't really work correctly anyway
> until OpenSBI commit c9a296d0edc9 ("platform: generic: allwinner: fix OF process
> for T-HEAD c9xx pmu"), which is still not in any released OpenSBI version.
> 
> So I am fine with requiring a devicetree update for continued PMU support.

Okay, would be nice to get an ack on the relevant parts of the most recent
iteration of the series confirming this :)

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