summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--arch/arm64/include/asm/processor.h1
-rw-r--r--arch/arm64/kernel/fpsimd.c18
2 files changed, 0 insertions, 19 deletions
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
index f77371232d8c..4f122b932cca 100644
--- a/arch/arm64/include/asm/processor.h
+++ b/arch/arm64/include/asm/processor.h
@@ -171,7 +171,6 @@ 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 ebb0158997ca..e9d70dc91511 100644
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -1509,30 +1509,12 @@ 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)