diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index 5b0a04810b23..ce6eebd6c08b 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -169,7 +169,6 @@ struct thread_struct { struct debug_info debug; /* debugging */ struct user_fpsimd_state kernel_fpsimd_state; - unsigned int kernel_fpsimd_cpu; #ifdef CONFIG_ARM64_PTR_AUTH struct ptrauth_keys_user keys_user; #ifdef CONFIG_ARM64_PTR_AUTH_KERNEL diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index f2ef15419b4a..1ec0deb2119d 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -1492,30 +1492,12 @@ void do_fpsimd_exc(unsigned long esr, struct pt_regs *regs) static void fpsimd_load_kernel_state(struct task_struct *task) { - struct cpu_fp_state *last = this_cpu_ptr(&fpsimd_last_state); - - /* - * Elide the load if this CPU holds the most recent kernel mode - * FPSIMD context of the current task. - */ - if (last->st == &task->thread.kernel_fpsimd_state && - task->thread.kernel_fpsimd_cpu == smp_processor_id()) - return; - fpsimd_load_state(&task->thread.kernel_fpsimd_state); } static void fpsimd_save_kernel_state(struct task_struct *task) { - struct cpu_fp_state cpu_fp_state = { - .st = &task->thread.kernel_fpsimd_state, - .to_save = FP_STATE_FPSIMD, - }; - fpsimd_save_state(&task->thread.kernel_fpsimd_state); - fpsimd_bind_state_to_cpu(&cpu_fp_state); - - task->thread.kernel_fpsimd_cpu = smp_processor_id(); } void fpsimd_thread_switch(struct task_struct *next)