linux-kernel - Re: [PATCH] arm_pmu: Validate single/group leader events

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Message-Id: <164984462805.2352727.11754227231341173145.b4-ty@kernel.org>
Date:   Wed, 13 Apr 2022 12:46:13 +0100
From:   Will Deacon <will@...nel.org>
To:     Rob Herring <robh@...nel.org>, Mark Rutland <mark.rutland@....com>
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
        Al Grant <al.grant@....com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm_pmu: Validate single/group leader events

On Fri, 8 Apr 2022 15:33:30 -0500, Rob Herring wrote:
> In the case where there is only a cycle counter available (i.e.
> PMCR_EL0.N is 0) and an event other than CPU cycles is opened, the open
> should fail as the event can never possibly be scheduled. However, the
> event validation when an event is opened is skipped when the group
> leader is opened. Fix this by always validating the group leader events.
> 
> 
> [...]

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

[1/1] arm_pmu: Validate single/group leader events
      https://git.kernel.org/arm64/c/e5c23779f93d

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev