On Fri, Nov 11, 2016 at 01:41:37PM +0000, Marc Zyngier wrote: > 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? Happy to take it all through the arm64 tree. Thanks for the review. -- Catalin _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
