On 08/11/16 13:56, Suzuki K Poulose wrote: > This series adds supports to the kernel and KVM hyp to handle > systems without FP/ASIMD properly. At the moment the kernel > doesn't check if the FP unit is available before accessing > the registers (e.g during context switch). Also for KVM, > we trap the FP/ASIMD accesses and handle it by injecting an > undefined instruction into the VM on systems without FP. > > Tested on a FVP_Base-AEM-v8A model by disabling VFP on at > least one CPU ( -C clusterX.cpuY.vfp-present=0 ). > > Changes since V2: > - Dropped cleanup patch for arm64/crypto/aes-ce-ccm-glue.c > - Removed static_key check from cpus_have_cap. All users with > constant caps should use the new API to make use of static_keys. > - Removed a dedicated static_key used in irqchip-gic-v3.c for > Cavium errata with the new API. > > Applies on v4.9-rc4 + [1] (which is pushed for rc5) > > [1] http://marc.info/?l=linux-arm-kernel&m=147819889813214&w=2 > > > Suzuki K Poulose (2): > arm64: Add hypervisor safe helper for checking constant capabilities > arm64: Support systems without FP/ASIMD > > arch/arm64/include/asm/cpucaps.h | 3 ++- > arch/arm64/include/asm/cpufeature.h | 24 +++++++++++++++++------- > arch/arm64/include/asm/neon.h | 3 ++- > arch/arm64/kernel/cpufeature.c | 17 ++++++++++++++++- > arch/arm64/kernel/fpsimd.c | 14 ++++++++++++++ > arch/arm64/kernel/process.c | 2 +- > arch/arm64/kvm/handle_exit.c | 11 +++++++++++ > arch/arm64/kvm/hyp/hyp-entry.S | 9 ++++++++- > arch/arm64/kvm/hyp/switch.c | 5 ++++- > drivers/irqchip/irq-gic-v3.c | 13 +------------ > 10 files changed, 76 insertions(+), 25 deletions(-) > For the series: Reviewed-by: Marc Zyngier <marc.zyngier@xxxxxxx> How do we plan on merging this? Catalin, are you willing to take it all? Thanks, M. -- Jazz is not dead. It just smells funny... _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
