[Minios-devel] [UNIKRAFT RFC PATCH 0/5] Support float point on arm64 kvm plat

[Jia He <justin.he@xxxxxxx>]

This series is to enable the float point support on arm64 kvm plat.

The key point is the patch 01 and 05
patch 01: write the sys regs to enable fp
patch 05: save/restore the q0-q31 during context switch

Tested on a ThundX2
qemu command line:/usr/local/bin/qemu-system-aarch64  \
-machine virt,gic-version=2 -m 1024 -cpu max -no-acpi -smp 1 \
-display none  -nographic -nodefaults -serial stdio \
-kernel build/helloworld_kvm-arm64

I created a app with 2 threads, and then print their local double/float
variables. Looks fine to me.

Jia He (5):
  plat: build: Add a config option to enable fp on arm64
  plat/kvm: arm64: Enable the fp/simd at the starting point
  arch/arm64: Don't pass -mgeneral-regs-only when CONFIG_FLOAT_POINT is
    y
  build: Link libgcc at the end of the link options list
  plat/arm: Support fp/simd save/restore during context switch

 arch/arm/arm64/Makefile.uk          |  6 +++
 plat/Config.uk                      |  7 +++
 plat/common/arm/thread_start64.S    | 83 +++++++++++++++++++++++++++++
 plat/common/include/arm/arm64/cpu.h | 46 +++++++++++++++-
 plat/kvm/Linker.uk                  |  2 +
 plat/kvm/arm/entry64.S              |  8 +++
 6 files changed, 150 insertions(+), 2 deletions(-)

-- 
2.17.1


_______________________________________________
Minios-devel mailing list
Minios-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/minios-devel