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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
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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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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