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From: Mark Rutland <mark.rutland@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: ardb@kernel.org, broonie@kernel.org, catalin.marinas@arm.com,
	mark.rutland@arm.com, maz@kernel.org, will@kernel.org
Subject: [PATCH v2 02/13] arm64/fpsimd: Remove unused fpsimd_force_sync_to_sve()
Date: Wed,  9 Apr 2025 17:39:59 +0100	[thread overview]
Message-ID: <20250409164010.3480271-3-mark.rutland@arm.com> (raw)
In-Reply-To: <20250409164010.3480271-1-mark.rutland@arm.com>

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: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Will Deacon <will@kernel.org>
---
 arch/arm64/include/asm/fpsimd.h |  1 -
 arch/arm64/kernel/fpsimd.c      | 14 --------------
 2 files changed, 15 deletions(-)

diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
index 564bc09b3e06d..9c3e88ec873ab 100644
--- 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 1ee5f330b8ed3..1391a491f2226 100644
--- 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.
-- 
2.30.2



  parent reply	other threads:[~2025-04-09 16:45 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-09 16:39 [PATCH v2 00/13] arm64: Preparatory FPSIMD/SVE/SME fixes Mark Rutland
2025-04-09 16:39 ` [PATCH v2 01/13] arm64/fpsimd: Avoid RES0 bits in the SME trap handler Mark Rutland
2025-04-09 16:39 ` Mark Rutland [this message]
2025-04-09 17:32   ` [PATCH v2 02/13] arm64/fpsimd: Remove unused fpsimd_force_sync_to_sve() Mark Brown
2025-04-09 16:40 ` [PATCH v2 03/13] arm64/fpsimd: Remove redundant SVE trap manipulation Mark Rutland
2025-04-09 16:40 ` [PATCH v2 04/13] arm64/fpsimd: Remove opportunistic freeing of SME state Mark Rutland
2025-04-09 16:40 ` [PATCH v2 05/13] arm64/fpsimd: Discard stale CPU state when handling SME traps Mark Rutland
2025-04-09 16:40 ` [PATCH v2 06/13] arm64/fpsimd: Don't corrupt FPMR when streaming mode changes Mark Rutland
2025-04-09 16:40 ` [PATCH v2 07/13] arm64/fpsimd: Avoid clobbering kernel FPSIMD state with SMSTOP Mark Rutland
2025-04-09 16:40 ` [PATCH v2 08/13] arm64/fpsimd: Reset FPMR upon exec() Mark Rutland
2025-04-09 16:40 ` [PATCH v2 09/13] arm64/fpsimd: Fix merging of FPSIMD state during signal return Mark Rutland
2025-04-09 16:40 ` [PATCH v2 10/13] arm64/fpsimd: Add fpsimd_save_and_flush_current_state() Mark Rutland
2025-04-09 16:40 ` [PATCH v2 11/13] arm64/fpsimd: signal32: Always save+flush state early Mark Rutland
2025-04-09 16:40 ` [PATCH v2 12/13] arm64/fpsimd: signal: " Mark Rutland
2025-04-09 16:40 ` [PATCH v2 13/13] arm64/fpsimd: signal: Simplify preserve_tpidr2_context() Mark Rutland
2025-04-09 17:17 ` [PATCH v2 00/13] arm64: Preparatory FPSIMD/SVE/SME fixes Catalin Marinas
2025-04-29 19:46   ` Will Deacon
2025-04-30 13:24     ` Mark Rutland

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