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FROMGIT: arm64/fpsimd: Remove unused fpsimd_force_sync_to_sve()

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

  bbc6172eef ("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>
(cherry picked from commit 61db0e0ba398a3726ca0e6a6399898d3d4c7b0f9
 https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
 for-next/sme-fixes)
Bug: 393087661
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I1f769e9718dcc07a9ee77e7ade132f2715e68207
This commit is contained in:
Mark Rutland
2025-04-09 17:39:59 +01:00
committed by Will Deacon
parent 1e380d1c0e
commit 2ccf10f4a6
2 changed files with 0 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/include/asm/fpsimd.h
View File

@@ -197,7 +197,6 @@ 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);

14
arch/arm64/kernel/fpsimd.c
View File

@@ -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.