On Fri, Apr 12, 2024 at 11:33:53AM GMT, Suzuki K Poulose wrote: > From: Subhasish Ghosh <subhasish.ghosh@xxxxxxx> > > Test that the FPU/SIMD registers are saved and restored correctly when > context switching CPUs. > > In order to test fpu/simd functionality, we need to make sure that > kvm-unit-tests doesn't generate code that uses the fpu registers, as that > might interfere with the test results. Thus make sure we compile the tests > with -mgeneral-regs-only. > > Signed-off-by: Subhasish Ghosh <subhasish.ghosh@xxxxxxx> > [ Added SVE register tests ] > Signed-off-by: Joey Gouly <joey.gouly@xxxxxxx> > Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx> > --- > arm/Makefile.arm64 | 9 + > arm/cstart64.S | 1 + > arm/fpu.c | 424 ++++++++++++++++++++++++++++++++++++++ > arm/unittests.cfg | 8 + > lib/arm64/asm/processor.h | 26 +++ > lib/arm64/asm/sysreg.h | 7 + > 6 files changed, 475 insertions(+) > create mode 100644 arm/fpu.c When I build and run this test with EFI I get an SVE exception. ./configure --arch=arm64 --cross-prefix=aarch64-linux-gnu- --enable-efi --enable-efi-direct qemu-system-aarch64 -nodefaults \ -machine virt -accel tcg -cpu max \ -display none -serial stdio \ -kernel arm/fpu.efi -append fpu.efi \ -bios /usr/share/edk2/aarch64/QEMU_EFI.silent.fd \ -smp 2 -machine acpi=off UEFI firmware (version edk2-20230524-3.fc38 built at 00:00:00 on Jun 26 2023) ... Address of image is: 0x43cfd000 PASS: fpu: FPU/SIMD register save/restore mask: 0xffffffff PASS: fpu: FPU/SIMD register save/restore mask: 0xffffffff Load address: 43cfd000 PC: 43d0b4e4 PC offset: e4e4 Unhandled exception ec=0x19 (SVE) Vector: 4 (el1h_sync) ESR_EL1: 66000000, ec=0x19 (SVE) FAR_EL1: 0000000000000000 (not valid) Exception frame registers: pc : [<0000000043d0b4e4>] lr : [<0000000043d0b4d8>] pstate: 000002c5 sp : 0000000043d2bec0 x29: 0000000043d2bec0 x28: 0000000043d2bf58 x27: 0000000043d2bf60 x26: 0000000043d2bf68 x25: 0000000043d2bf70 x24: 8000000000000002 x23: 0000000043d2bf88 x22: 0000000000000000 x21: 000000004661b898 x20: 0000000043d2bfa8 x19: 0000000043d38e60 x18: 0000000000000000 x17: 00000000ffffa6ab x16: 0000000043d07780 x15: 0000000000000000 x14: 0000000000000010 x13: 0000000043d0d4b0 x12: 000000000000000f x11: 0000000000000004 x10: 0000000000000066 x9 : 0000000000000066 x8 : 0000000043d3abf0 x7 : 0000000000000080 x6 : 0000000000000040 x5 : 0000000000003bce x4 : 0000000000043cfd x3 : 0000000040101000 x2 : 0000000000040105 x1 : 0000000000000040 x0 : 1301001120110022 STACK: @e4e4 752c 1050 EXIT: STATUS=127 Thanks, drew
