[PATCH v3 0/2] arm64: Support systems without FP/ASIMD

On Tue, Nov 08, 2016 at 01:56:19PM +0000, 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

I queued the patches for 4.10 with a slight modification as I haven't
cherry-picked the patch above. I'll push the for-next/core branch out
once I've done some testing.

Thanks.

-- 
Catalin