linux/arch/arm64
Dave Martin 1bd3f93641 arm64/sve: Preserve SVE registers around kernel-mode NEON use
Kernel-mode NEON will corrupt the SVE vector registers, due to the
way they alias the FPSIMD vector registers in the hardware.

This patch ensures that any live SVE register content for the task
is saved by kernel_neon_begin().  The data will be restored in the
usual way on return to userspace.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-11-03 15:24:18 +00:00
..
boot ARM: arm64: Devicetree updates for v4.14 2017-09-10 20:54:48 -07:00
configs ARM/arm64: SoC platform updates for v4.14 2017-09-10 20:35:46 -07:00
crypto crypto: arm64/aes - avoid expanded lookup tables in the final round 2017-08-04 09:27:26 +08:00
include arm64/sve: Probe SVE capabilities and usable vector lengths 2017-11-03 15:24:17 +00:00
kernel arm64/sve: Preserve SVE registers around kernel-mode NEON use 2017-11-03 15:24:18 +00:00
kvm arm64: KVM: Hide unsupported AArch64 CPU features from guests 2017-11-03 15:24:12 +00:00
lib arm64: use WFE for long delays 2017-10-13 18:56:15 +01:00
mm arm64: explicitly mask all exceptions 2017-11-02 15:55:40 +00:00
net bpf, arm64: implement jiting of BPF_J{LT, LE, SLT, SLE} 2017-08-09 16:53:56 -07:00
xen xen/privcmd: Add IOCTL_PRIVCMD_DM_OP 2017-02-14 15:13:43 -05:00
Kconfig arm64/sve: Kconfig update and conditional compilation support 2017-11-03 15:24:14 +00:00
Kconfig.debug arm64: relocation testing module 2017-04-04 17:03:32 +01:00
Kconfig.platforms ARM: arm64: Devicetree updates for v4.14 2017-09-10 20:54:48 -07:00
Makefile arm64: prevent regressions in compressed kernel image size when upgrading to binutils 2.27 2017-10-30 13:45:12 +00:00