This revision switches to a new approach by providing a helper to initialize user FPU states for the driver, which is considerably simpler. This approach could serve as an example for addressing similar situations from a non-critical path. I thought fpu_reset_fpregs() as the helper name. There is already one with this name. Then, I realized the existing one is a bit misaligned, so renamed it first here. Thanks to Dave for the reviews and the suggestion. Thanks, Chang The previous postings: V2: https://lore.kernel.org/all/20240507235344.249103-1-chang.seok.bae@xxxxxxxxx V1: https://lore.kernel.org/all/20240430212508.105117-1-chang.seok.bae@xxxxxxxxx Chang S. Bae (3): x86/fpu: Rename fpu_reset_fpregs() to fpu_reset_fpstate_regs() x86/fpu: Allow FPU users to initialize FPU state platform/x86/intel/ifs: Initialize FPU states for the scan test arch/x86/include/asm/fpu/api.h | 2 ++ arch/x86/kernel/fpu/core.c | 17 ++++++++++++++--- drivers/platform/x86/intel/ifs/ifs.h | 1 + drivers/platform/x86/intel/ifs/runtest.c | 7 +++++++ 4 files changed, 24 insertions(+), 3 deletions(-) base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 -- 2.34.1
