From: Rob Herring <robh@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>
Cc: kvmarm@lists.cs.columbia.edu, James Morse <james.morse@arm.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
linux-arm-kernel@lists.infradead.org,
Suzuki K Poulose <suzuki.poulose@arm.com>
Subject: [PATCH v2 0/3] Cortex-A77 erratum 1508412 work-around
Date: Wed, 1 Jul 2020 15:53:05 -0600 [thread overview]
Message-ID: <20200701215308.3715856-1-robh@kernel.org> (raw)
This series implements the work-around for Cortex-A77 erratum 1508412.
KVM guests which don't implement the work-around can still deadlock the
system. This is also the case with the existing Cortex-A57 erratum 832075,
so we add a warning message if an erratum can cause deadlock.
Rob
v1: https://lore.kernel.org/linux-arm-kernel/20200629213321.2953022-1-robh@kernel.org/
Rob Herring (3):
KVM: arm64: Print warning when cpu erratum can cause guests to
deadlock
arm64: Add part number for Arm Cortex-A77
arm64: Add workaround for Arm Cortex-A77 erratum 1508412
Documentation/arm64/silicon-errata.rst | 2 ++
arch/arm64/Kconfig | 19 +++++++++++++++++++
arch/arm64/include/asm/cpucaps.h | 3 ++-
arch/arm64/include/asm/cputype.h | 2 ++
arch/arm64/kernel/cpu_errata.c | 10 ++++++++++
arch/arm64/kvm/arm.c | 5 +++++
arch/arm64/mm/fault.c | 10 ++++++++++
7 files changed, 50 insertions(+), 1 deletion(-)
--
2.25.1
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next reply other threads:[~2020-07-01 21:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-01 21:53 Rob Herring [this message]
2020-07-01 21:53 ` [PATCH v2 1/3] KVM: arm64: Print warning when cpu erratum can cause guests to deadlock Rob Herring
2020-07-02 11:45 ` Will Deacon
2020-07-02 14:04 ` Rob Herring
2020-07-02 14:42 ` Will Deacon
2020-07-01 21:53 ` [PATCH v2 2/3] arm64: Add part number for Arm Cortex-A77 Rob Herring
2020-07-01 21:53 ` [PATCH v2 3/3] arm64: Add workaround for Arm Cortex-A77 erratum 1508412 Rob Herring
2020-07-02 11:42 ` Will Deacon
2020-07-02 14:56 ` Rob Herring
2020-07-02 15:01 ` Will Deacon
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