From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A9B65CA1002 for ; Thu, 4 Sep 2025 12:58:29 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 112BD8E0001; Thu, 4 Sep 2025 08:58:29 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0C3068E0013; Thu, 4 Sep 2025 08:58:29 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id ED2988E0001; Thu, 4 Sep 2025 08:58:28 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id D92A78E0001 for ; Thu, 4 Sep 2025 08:58:28 -0400 (EDT) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 80D7056376 for ; Thu, 4 Sep 2025 12:58:28 +0000 (UTC) X-FDA: 83851571496.26.73B2E36 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf16.hostedemail.com (Postfix) with ESMTP id F00E7180011 for ; Thu, 4 Sep 2025 12:58:26 +0000 (UTC) Authentication-Results: imf16.hostedemail.com; dkim=none; spf=pass (imf16.hostedemail.com: domain of kevin.brodsky@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=kevin.brodsky@arm.com; dmarc=pass (policy=none) header.from=arm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1756990707; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=tWQ/OmD9CmpzqUNR8GfFlqWGjLcl1VDbFZ1Nh40eC1w=; b=KcD+9vep/c8pbzfZMulUHfnSl6gPxrCFgLbGccRXaXFVAnw9Xy4n1VhG9NGqBNYLqzhaPn iZdt+bha/iyD4eOY1Jb9xa2VQn7gzx2FMcSO2XDZwmgOLb9Npbb7a7whgTXH/yiBMYPxJK 2nZi2idP7En60gGRsSTCXe6ddru7JeI= ARC-Authentication-Results: i=1; imf16.hostedemail.com; dkim=none; spf=pass (imf16.hostedemail.com: domain of kevin.brodsky@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=kevin.brodsky@arm.com; dmarc=pass (policy=none) header.from=arm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1756990707; a=rsa-sha256; cv=none; b=im80XhUEJ5KJB/fA5/Ruk1PiToWeDwQ/AF9Rz9FuzpkUz6PthpaXwgAy6AJvXNqo3G/7Oq 9d5Vte7DSJZVUo4PW5s73LOOTvcbJCTScUelIGtGmM4fyq5B0cLXyQ/IJR+NPSJ2JD/Kcm tYORtWNhYZ7VCQSoXFlbhxVK130YTSQ= 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 741D025E0; Thu, 4 Sep 2025 05:58:17 -0700 (PDT) Received: from e123572-lin.arm.com (e123572-lin.cambridge.arm.com [10.1.194.54]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 44AD33F6A8; Thu, 4 Sep 2025 05:58:21 -0700 (PDT) From: Kevin Brodsky To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Kevin Brodsky , Alexander Gordeev , Andreas Larsson , Andrew Morton , Boris Ostrovsky , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dave Hansen , David Hildenbrand , "David S. Miller" , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Juergen Gross , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , Peter Zijlstra , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Vlastimil Babka , Will Deacon , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org Subject: [PATCH 1/7] mm: remove arch_flush_lazy_mmu_mode() Date: Thu, 4 Sep 2025 13:57:30 +0100 Message-ID: <20250904125736.3918646-2-kevin.brodsky@arm.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20250904125736.3918646-1-kevin.brodsky@arm.com> References: <20250904125736.3918646-1-kevin.brodsky@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: F00E7180011 X-Stat-Signature: wqsqw5h9b9i14sz69wnroo6jei61q8y3 X-Rspam-User: X-HE-Tag: 1756990706-659308 X-HE-Meta: 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: This function has only ever been used in arch/x86, so there is no need for other architectures to implement it. Remove it from linux/pgtable.h and all architectures besides x86. The arm64 implementation is not empty but it is only called from arch_leave_lazy_mmu_mode(), so we can simply fold it there. Signed-off-by: Kevin Brodsky --- arch/arm64/include/asm/pgtable.h | 9 +-------- arch/powerpc/include/asm/book3s/64/tlbflush-hash.h | 2 -- arch/sparc/include/asm/tlbflush_64.h | 1 - arch/x86/include/asm/pgtable.h | 3 ++- include/linux/pgtable.h | 1 - 5 files changed, 3 insertions(+), 13 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index abd2dee416b3..728d7b6ed20a 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -101,21 +101,14 @@ static inline void arch_enter_lazy_mmu_mode(void) set_thread_flag(TIF_LAZY_MMU); } -static inline void arch_flush_lazy_mmu_mode(void) +static inline void arch_leave_lazy_mmu_mode(void) { if (in_interrupt()) return; if (test_and_clear_thread_flag(TIF_LAZY_MMU_PENDING)) emit_pte_barriers(); -} - -static inline void arch_leave_lazy_mmu_mode(void) -{ - if (in_interrupt()) - return; - arch_flush_lazy_mmu_mode(); clear_thread_flag(TIF_LAZY_MMU); } diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h index 146287d9580f..176d7fd79eeb 100644 --- a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h +++ b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h @@ -55,8 +55,6 @@ static inline void arch_leave_lazy_mmu_mode(void) preempt_enable(); } -#define arch_flush_lazy_mmu_mode() do {} while (0) - extern void hash__tlbiel_all(unsigned int action); extern void flush_hash_page(unsigned long vpn, real_pte_t pte, int psize, diff --git a/arch/sparc/include/asm/tlbflush_64.h b/arch/sparc/include/asm/tlbflush_64.h index 8b8cdaa69272..cd144eb31bdd 100644 --- a/arch/sparc/include/asm/tlbflush_64.h +++ b/arch/sparc/include/asm/tlbflush_64.h @@ -44,7 +44,6 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end); void flush_tlb_pending(void); void arch_enter_lazy_mmu_mode(void); void arch_leave_lazy_mmu_mode(void); -#define arch_flush_lazy_mmu_mode() do {} while (0) /* Local cpu only. */ void __flush_tlb_all(void); diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index e33df3da6980..14fd672bc9b2 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -117,7 +117,8 @@ extern pmdval_t early_pmd_flags; #define pte_val(x) native_pte_val(x) #define __pte(x) native_make_pte(x) -#define arch_end_context_switch(prev) do {} while(0) +#define arch_end_context_switch(prev) do {} while (0) +#define arch_flush_lazy_mmu_mode() do {} while (0) #endif /* CONFIG_PARAVIRT_XXL */ static inline pmd_t pmd_set_flags(pmd_t pmd, pmdval_t set) diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 4c035637eeb7..8848e132a6be 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -234,7 +234,6 @@ static inline int pmd_dirty(pmd_t pmd) #ifndef __HAVE_ARCH_ENTER_LAZY_MMU_MODE #define arch_enter_lazy_mmu_mode() do {} while (0) #define arch_leave_lazy_mmu_mode() do {} while (0) -#define arch_flush_lazy_mmu_mode() do {} while (0) #endif #ifndef pte_batch_hint -- 2.47.0