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-r...@kernel.org/ v2: https://lore.kernel.org/linux-arm-kernel/20200701215308.3715856-1-r...@kernel.org/ v1: https://lore.kernel.org/linux-arm-kernel/20200629213321.2953022-1-r...@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 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
