linux-kernel - Re: [PATCH v23 0/4] arm64/perf: Enable branch stack sampling

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Message-Id: <175198748936.383518.12260470313437607576.b4-ty@kernel.org>
Date: Tue,  8 Jul 2025 19:02:59 +0100
From: Will Deacon <will@...nel.org>
To: Mark Rutland <mark.rutland@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Jonathan Corbet <corbet@....net>,
	Marc Zyngier <maz@...nel.org>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Joey Gouly <joey.gouly@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Zenghui Yu <yuzenghui@...wei.com>,
	James Clark <james.clark@...aro.org>,
	Anshuman Khandual <anshuman.khandual@....com>,
	Leo Yan <leo.yan@....com>,
	"Rob Herring (Arm)" <robh@...nel.org>
Cc: kernel-team@...roid.com,
	Will Deacon <will@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	kvmarm@...ts.linux.dev,
	Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH v23 0/4] arm64/perf: Enable branch stack sampling

On Wed, 11 Jun 2025 13:01:10 -0500, Rob Herring (Arm) wrote:
> This series enables perf branch stack sampling support on arm64 via a
> v9.2 arch feature called Branch Record Buffer Extension (BRBE). Details
> on BRBE can be found in the Arm ARM[1] chapter D18.
> 
> I've picked up this series from Anshuman. v19 and later versions have
> been reworked quite a bit by Mark and myself. The bulk of those changes
> are in patch 5.
> 
> [...]

Applied to will (for-next/perf), thanks!

[1/4] arm64/sysreg: Add BRBE registers and fields
      https://git.kernel.org/will/c/52e4a56ab8b8
[2/4] arm64: Handle BRBE booting requirements
      https://git.kernel.org/will/c/ae344bcb0d49
[3/4] KVM: arm64: nvhe: Disable branch generation in nVHE guests
      https://git.kernel.org/will/c/d7567e9b9ba5
[4/4] perf: arm_pmuv3: Add support for the Branch Record Buffer Extension (BRBE)
      https://git.kernel.org/will/c/58074a0fce66

Cheers,
-- 
Will

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