From nobody Thu Oct 30 22:56:26 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=arm.com Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 176051738918993.34483704352374; Wed, 15 Oct 2025 01:36:29 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.1143280.1477055 (Exim 4.92) (envelope-from ) id 1v8wzX-00032y-RI; Wed, 15 Oct 2025 08:36:15 +0000 Received: by outflank-mailman (output) from mailman id 1143280.1477055; Wed, 15 Oct 2025 08:36:15 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1v8wzX-00031e-MA; Wed, 15 Oct 2025 08:36:15 +0000 Received: by outflank-mailman (input) for mailman id 1143280; Wed, 15 Oct 2025 08:36:14 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1v8wsA-0005tz-3i for xen-devel@lists.xenproject.org; Wed, 15 Oct 2025 08:28:38 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-sth1.inumbo.com (Halon) with ESMTP id f23dbf0d-a9a0-11f0-9d15-b5c5bf9af7f9; Wed, 15 Oct 2025 10:28:37 +0200 (CEST) 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 D57AA2328; Wed, 15 Oct 2025 01:28:28 -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 8251F3F66E; Wed, 15 Oct 2025 01:28:31 -0700 (PDT) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: f23dbf0d-a9a0-11f0-9d15-b5c5bf9af7f9 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 , Yeoreum Yun , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org Subject: [PATCH v3 10/13] sparc/mm: replace batch->active with in_lazy_mmu_mode() Date: Wed, 15 Oct 2025 09:27:24 +0100 Message-ID: <20251015082727.2395128-11-kevin.brodsky@arm.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20251015082727.2395128-1-kevin.brodsky@arm.com> References: <20251015082727.2395128-1-kevin.brodsky@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZM-MESSAGEID: 1760517391468158500 Content-Type: text/plain; charset="utf-8" The generic lazy_mmu layer now tracks whether a task is in lazy MMU mode. As a result we no longer need to track whether the per-CPU TLB batch struct is active - we know it is if in_lazy_mmu_mode() returns true. Signed-off-by: Kevin Brodsky --- arch/sparc/include/asm/tlbflush_64.h | 1 - arch/sparc/mm/tlb.c | 9 +-------- 2 files changed, 1 insertion(+), 9 deletions(-) diff --git a/arch/sparc/include/asm/tlbflush_64.h b/arch/sparc/include/asm/= tlbflush_64.h index 4e1036728e2f..6133306ba59a 100644 --- a/arch/sparc/include/asm/tlbflush_64.h +++ b/arch/sparc/include/asm/tlbflush_64.h @@ -12,7 +12,6 @@ struct tlb_batch { unsigned int hugepage_shift; struct mm_struct *mm; unsigned long tlb_nr; - unsigned long active; unsigned long vaddrs[TLB_BATCH_NR]; }; =20 diff --git a/arch/sparc/mm/tlb.c b/arch/sparc/mm/tlb.c index 7b5dfcdb1243..879e22c86e5c 100644 --- a/arch/sparc/mm/tlb.c +++ b/arch/sparc/mm/tlb.c @@ -52,11 +52,7 @@ void flush_tlb_pending(void) =20 void arch_enter_lazy_mmu_mode(void) { - struct tlb_batch *tb; - preempt_disable(); - tb =3D this_cpu_ptr(&tlb_batch); - tb->active =3D 1; } =20 void arch_flush_lazy_mmu_mode(void) @@ -69,10 +65,7 @@ void arch_flush_lazy_mmu_mode(void) =20 void arch_leave_lazy_mmu_mode(void) { - struct tlb_batch *tb =3D this_cpu_ptr(&tlb_batch); - arch_flush_lazy_mmu_mode(); - tb->active =3D 0; preempt_enable(); } =20 @@ -93,7 +86,7 @@ static void tlb_batch_add_one(struct mm_struct *mm, unsig= ned long vaddr, nr =3D 0; } =20 - if (!tb->active) { + if (!in_lazy_mmu_mode()) { flush_tsb_user_page(mm, vaddr, hugepage_shift); global_flush_tlb_page(mm, vaddr); goto out; --=20 2.47.0