From patchwork Wed Apr 9 16:39:59 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Rutland X-Patchwork-Id: 14045131 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B8AB1C36002 for ; Wed, 9 Apr 2025 16:45:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=4tmV8pXYVBz2TEcGvVpi9a87NynlxAMUhsrmvYUuAAU=; b=inV8QgNOHB8N2v7Q98SvfJxvky V/xuShzXKFzA3QPzBg3oDt4v8lCaBi/QaGMbMXXTsusEWCTDZ6LU1srHPOJHev4PqhddbXCxYyGY8 bHV35LbYl11jhtrjwbvNvE3THva7lwVRxXTdJlPgOjd+19D86T7nK/xoJugvzNXJVy4WW2qGJo30y l6f6MaMvNUS6FsceLKwnzNve7/+RZCMa+NVIMHo+PeHpEQEfJk/tnAOmZGM8Ua1xLWFoBtGKJCEWU vB6s+zQdhG5NA1VAACE6UdHsjvO0DvAaH4zT/I9nrb2+1xMQaIMOOnDiPXrj7futGdJOkKw+zUFyM aO8LYulA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u2YYe-00000007veG-0jjF; Wed, 09 Apr 2025 16:45:48 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u2YTX-00000007uuF-1FOC for linux-arm-kernel@lists.infradead.org; Wed, 09 Apr 2025 16:40:32 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 47BC01D6F; Wed, 9 Apr 2025 09:40:31 -0700 (PDT) Received: from lakrids.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 9369C3F59E; Wed, 9 Apr 2025 09:40:29 -0700 (PDT) From: Mark Rutland 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 Message-Id: <20250409164010.3480271-3-mark.rutland@arm.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20250409164010.3480271-1-mark.rutland@arm.com> References: <20250409164010.3480271-1-mark.rutland@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250409_094031_377642_A1AB22D6 X-CRM114-Status: GOOD ( 11.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 Cc: Catalin Marinas Cc: Marc Zyngier Cc: Mark Brown Cc: Will Deacon Reviewed-by: Mark Brown --- 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.