From: Rob Herring <robh@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
Suzuki K Poulose <suzuki.poulose@arm.com>,
James Morse <james.morse@arm.com>,
Andrew Scull <ascull@google.com>,
kvmarm@lists.cs.columbia.edu,
Julien Thierry <julien.thierry.kdev@gmail.com>
Subject: [PATCH v4 0/3] Cortex-A77 erratum 1508412 workaround
Date: Mon, 3 Aug 2020 13:31:24 -0600 [thread overview]
Message-ID: <20200803193127.3012242-1-robh@kernel.org> (raw)
This series implements the work-around for Cortex-A77 erratum 1508412.
KVM guests which don't implement the workaround 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.
Changes detailed in patches.
Rob
v3: https://lore.kernel.org/linux-arm-kernel/20200717205233.903344-1-robh@kernel.org/
v2: https://lore.kernel.org/linux-arm-kernel/20200701215308.3715856-1-robh@kernel.org/
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 | 20 ++++++++++++++++++++
arch/arm64/include/asm/cpucaps.h | 3 ++-
arch/arm64/include/asm/cputype.h | 2 ++
arch/arm64/include/asm/kvm_hyp.h | 1 -
arch/arm64/include/asm/sysreg.h | 9 +++++++++
arch/arm64/kernel/cpu_errata.c | 10 ++++++++++
arch/arm64/kvm/arm.c | 5 +++++
arch/arm64/kvm/hyp/switch.c | 7 ++++---
arch/arm64/kvm/hyp/sysreg-sr.c | 2 +-
arch/arm64/kvm/sys_regs.c | 2 +-
arch/arm64/mm/fault.c | 2 +-
12 files changed, 57 insertions(+), 8 deletions(-)
--
2.25.1
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next reply other threads:[~2020-08-03 19:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-03 19:31 Rob Herring [this message]
2020-08-03 19:31 ` [PATCH v4 1/3] KVM: arm64: Print warning when cpu erratum can cause guests to deadlock Rob Herring
2020-08-03 19:31 ` [PATCH v4 2/3] arm64: Add part number for Arm Cortex-A77 Rob Herring
2020-08-03 19:31 ` [PATCH v4 3/3] arm64: Add workaround for Arm Cortex-A77 erratum 1508412 Rob Herring
2020-08-21 12:07 ` Catalin Marinas
2020-08-21 12:12 ` Will Deacon
2020-08-21 12:26 ` Catalin Marinas
2020-08-21 12:45 ` Marc Zyngier
2020-08-21 14:05 ` Catalin Marinas
2020-08-21 17:02 ` Marc Zyngier
2020-08-21 17:51 ` Catalin Marinas
2020-09-09 23:06 ` Rob Herring
2020-08-21 10:56 ` [PATCH v4 0/3] Cortex-A77 erratum 1508412 workaround Will Deacon
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