From: Beata Michalska <beata.michalska@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Vladimir.Murzin@arm.com, catalin.marinas@arm.com,
will@kernel.org, suzuki.poulose@arm.com, xuewen.yan94@gmail.com,
linux-kernel@vger.kernel.org
Subject: [PATCH 0/3] arm64: errata: Update AMU workarounds
Date: Wed, 11 Nov 2026 13:39:26 +0100 [thread overview]
Message-ID: <20261111124005.2688820-1-beata.michalska@arm.com> (raw)
Hi All,
This short series updates errata for AMU core & const counters.
The last patch in the series tries to optimize a bit the paired
readings of both counters, so that the workaround checks do not
skew the results. It is also intentionally the last one, as it
will not apply on older stable kernels.
Beata Michalska (3):
arm64: errata: Extend the workaround for broken AMEVCNTR01 counter
arm64: errata: Add Cortex-A715/A720 AMU core counter workaround
arm64: topology: Reduce the skew for AMU feedback counter sampling
Documentation/arch/arm64/silicon-errata.rst | 12 ++++
arch/arm64/Kconfig | 44 ++++++++++++-
arch/arm64/kernel/cpu_errata.c | 29 ++++++++
arch/arm64/kernel/cpufeature.c | 3 +-
arch/arm64/kernel/topology.c | 73 ++++++++++++++-------
arch/arm64/tools/cpucaps | 1 +
6 files changed, 133 insertions(+), 29 deletions(-)
--
2.43.0
next reply other threads:[~2026-11-11 12:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-11 12:39 Beata Michalska [this message]
2026-11-11 12:39 ` [PATCH 1/3] arm64: errata: Extend the workaround for broken AMEVCNTR01 counter Beata Michalska
2026-11-11 12:39 ` [PATCH 2/3] arm64: errata: Add Cortex-A715/A720 AMU core counter workaround Beata Michalska
2026-11-11 12:39 ` [PATCH 3/3] arm64: topology: Reduce the skew for AMU feedback counter sampling Beata Michalska
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