linux-kernel - Re: [PATCH v3] arm64/arm: arm_pmuv3: perf: Don't truncate 64-bit registers

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Message-Id: <169936667592.2397489.15353218323570592668.b4-ty@arm.com>
Date:   Tue,  7 Nov 2023 14:18:16 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Marc Zyngier <maz@...nel.org>, Mark Rutland <mark.rutland@....com>,
        Will Deacon <will@...nel.org>,
        Zaid Al-Bassam <zalbassam@...gle.com>,
        Reiji Watanabe <reijiw@...gle.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Russell King <linux@...linux.org.uk>,
        Ilkka Koskinen <ilkka@...amperecomputing.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] arm64/arm: arm_pmuv3: perf: Don't truncate 64-bit registers

On Thu, 02 Nov 2023 11:30:12 -0700, Ilkka Koskinen wrote:
> The driver used to truncate several 64-bit registers such as PMCEID[n]
> registers used to describe whether architectural and microarchitectural
> events in range 0x4000-0x401f exist. Due to discarding the bits, the
> driver made the events invisible, even if they existed.
> 
> Moreover, PMCCFILTR and PMCR registers have additional bits in the upper
> 32 bits. This patch makes them available although they aren't currently
> used. Finally, functions handling PMXEVCNTR and PMXEVTYPER registers are
> removed as they not being used at all.
> 
> [...]

Applied to arm64 (for-next/core), thanks!

[1/1] arm64/arm: arm_pmuv3: perf: Don't truncate 64-bit registers
      https://git.kernel.org/arm64/c/403edfa43628

-- 
Catalin