arm64/fpsimd: Remove unused fpsimd_force_sync_to_sve()

There have been no users of fpsimd_force_sync_to_sve() since commit:

  bbc6172eefdb276b ("arm64/fpsimd: SME no longer requires SVE register state")

Remove fpsimd_force_sync_to_sve().

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20250409164010.3480271-3-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
index 564bc09b3e06d4dd0c20ee1bfdbfee471e775737..9c3e88ec873abdb40601b024ddf2caf53ad16a14 100644 (file)
--- a/arch/arm64/include/asm/fpsimd.h
+++ b/arch/arm64/include/asm/fpsimd.h
@@ -196,7 +196,6 @@ struct vl_info {
 extern void sve_alloc(struct task_struct *task, bool flush);
 extern void fpsimd_release_task(struct task_struct *task);
 extern void fpsimd_sync_to_sve(struct task_struct *task);
-extern void fpsimd_force_sync_to_sve(struct task_struct *task);
 extern void sve_sync_to_fpsimd(struct task_struct *task);
 extern void sve_sync_from_fpsimd_zeropad(struct task_struct *task);
 

diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index 1ee5f330b8ed35b6ab787544e4b9d67f031add22..1391a491f2226a2ced41aa4d5852a8768c452b0a 100644 (file)
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -758,20 +758,6 @@ void sve_alloc(struct task_struct *task, bool flush)
                kzalloc(sve_state_size(task), GFP_KERNEL);
 }
 
-
-/*
- * Force the FPSIMD state shared with SVE to be updated in the SVE state
- * even if the SVE state is the current active state.
- *
- * This should only be called by ptrace.  task must be non-runnable.
- * task->thread.sve_state must point to at least sve_state_size(task)
- * bytes of allocated kernel memory.
- */
-void fpsimd_force_sync_to_sve(struct task_struct *task)
-{
-       fpsimd_to_sve(task);
-}
-
 /*
  * Ensure that task->thread.sve_state is up to date with respect to
  * the user task, irrespective of when SVE is in use or not.