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, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/3] Cortex-A77 erratum 1508412 workaround
Date: Fri, 17 Jul 2020 14:52:30 -0600 [thread overview]
Message-ID: <20200717205233.903344-1-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
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 | 19 +++++++++++++++++++
arch/arm64/include/asm/cpucaps.h | 3 ++-
arch/arm64/include/asm/cputype.h | 2 ++
arch/arm64/include/asm/kvm_hyp.h | 11 +++++++++++
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 | 8 +++++++-
arch/arm64/mm/fault.c | 10 ++++++++++
11 files changed, 73 insertions(+), 6 deletions(-)
--
2.25.1
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next reply other threads:[~2020-07-17 20:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-17 20:52 Rob Herring [this message]
2020-07-17 20:52 ` [PATCH v3 1/3] KVM: arm64: Print warning when cpu erratum can cause guests to deadlock Rob Herring
2020-07-17 20:52 ` [PATCH v3 2/3] arm64: Add part number for Arm Cortex-A77 Rob Herring
2020-07-17 20:52 ` [PATCH v3 3/3] arm64: Add workaround for Arm Cortex-A77 erratum 1508412 Rob Herring
2020-07-27 15:52 ` Andrew Scull
2020-07-29 16:38 ` Catalin Marinas
2020-07-30 8:22 ` Will Deacon
2020-07-31 22:55 ` Rob Herring
2020-08-03 15:03 ` Will Deacon
2020-07-31 23:21 ` Rob Herring
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