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 C1304CCD18E for ; Wed, 15 Oct 2025 08:28:34 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 135EA8E0016; Wed, 15 Oct 2025 04:28:34 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 10DCB8E0002; Wed, 15 Oct 2025 04:28:34 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0234E8E0016; Wed, 15 Oct 2025 04:28:33 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id E4A8C8E0002 for ; Wed, 15 Oct 2025 04:28:33 -0400 (EDT) Received: from smtpin28.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 8E47F88BAD for ; Wed, 15 Oct 2025 08:28:33 +0000 (UTC) X-FDA: 83999672106.28.22AB362 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf03.hostedemail.com (Postfix) with ESMTP id E056D20008 for ; Wed, 15 Oct 2025 08:28:31 +0000 (UTC) Authentication-Results: imf03.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf03.hostedemail.com: domain of kevin.brodsky@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=kevin.brodsky@arm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1760516912; a=rsa-sha256; cv=none; b=nf4rs5dZcWy+xLdJr3xfbbzDmHiqiQ8GxEqU6mC61OC0seOyEA0wzRGzB8yux72Axn4CGF 2dygNw8gW7v+Xqnp+qpO6xZlOAsA9fdpR0oMgALk+xV9/OF1e53at+eoZ8yEDCKXjDodaT i9EGfCBUgf8+CHdh4V2U5SS2bq2eu3U= ARC-Authentication-Results: i=1; imf03.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf03.hostedemail.com: domain of kevin.brodsky@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=kevin.brodsky@arm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1760516912; 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=95JLeA5pBrLWW08YxeG13d9XW5R7v2ei3BEG6R93cbw=; b=OLnhSkWGXH9Q/G+XvX4kD8+9oGwfmaciHt3v4xiMuyZiYTvx9fs2hX8zR/uxmFor7Tgypj dKOHrtKWPhZahQ+H9SKsNl5ag3H8+oQtqwouh2xK1VafmRbUP+fICGIwAzea8z21+VEumx t1ee10T1B9QhUFilIiSdKTiGn7CkAxg= 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 3C10E2309; Wed, 15 Oct 2025 01:28:23 -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 37F513F66E; Wed, 15 Oct 2025 01:28:26 -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 , 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 09/13] powerpc/mm: replace batch->active with in_lazy_mmu_mode() Date: Wed, 15 Oct 2025 09:27:23 +0100 Message-ID: <20251015082727.2395128-10-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: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: E056D20008 X-Stat-Signature: kkqgt99j4jqnz539i9aqiib6h54myaxm X-HE-Tag: 1760516911-745352 X-HE-Meta: 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 coLgTwjp ks7AKobGQZVKVgA+rxXU8SA3g0r9lTj3HZLGqz8WF1cc4w19K0YMyAQDMZfogxg/2fLjOKBS8fU7rI1bpHwJ/oDsl6QPTfwUEMaPzCP9aEXY3+eVeRiJ1C+3f/RYHGvEpO+tyrdP6CtMgM/ZW7fbx+yl0CHgC161WUNCnPjHjIfgA5MwkLVBbLi6uMXvxOBOiLwVG843iE5c1Q1slMQQM9mqP/kNXVAzMIbS5vC9ETmfw7/Q= 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: 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/powerpc/include/asm/book3s/64/tlbflush-hash.h | 9 --------- arch/powerpc/mm/book3s64/hash_tlb.c | 2 +- 2 files changed, 1 insertion(+), 10 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h index 623a8a8b2d0e..bbc54690d374 100644 --- a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h +++ b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h @@ -12,7 +12,6 @@ #define PPC64_TLB_BATCH_NR 192 struct ppc64_tlb_batch { - int active; unsigned long index; struct mm_struct *mm; real_pte_t pte[PPC64_TLB_BATCH_NR]; @@ -26,8 +25,6 @@ extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch); static inline void arch_enter_lazy_mmu_mode(void) { - struct ppc64_tlb_batch *batch; - if (radix_enabled()) return; /* @@ -35,8 +32,6 @@ static inline void arch_enter_lazy_mmu_mode(void) * operating on kernel page tables. */ preempt_disable(); - batch = this_cpu_ptr(&ppc64_tlb_batch); - batch->active = 1; } static inline void arch_flush_lazy_mmu_mode(void) @@ -51,14 +46,10 @@ static inline void arch_flush_lazy_mmu_mode(void) static inline void arch_leave_lazy_mmu_mode(void) { - struct ppc64_tlb_batch *batch; - if (radix_enabled()) return; - batch = this_cpu_ptr(&ppc64_tlb_batch); arch_flush_lazy_mmu_mode(); - batch->active = 0; preempt_enable(); } diff --git a/arch/powerpc/mm/book3s64/hash_tlb.c b/arch/powerpc/mm/book3s64/hash_tlb.c index 787f7a0e27f0..72b83f582b6d 100644 --- a/arch/powerpc/mm/book3s64/hash_tlb.c +++ b/arch/powerpc/mm/book3s64/hash_tlb.c @@ -100,7 +100,7 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr, * Check if we have an active batch on this CPU. If not, just * flush now and return. */ - if (!batch->active) { + if (!in_lazy_mmu_mode()) { flush_hash_page(vpn, rpte, psize, ssize, mm_is_thread_local(mm)); put_cpu_var(ppc64_tlb_batch); return; -- 2.47.0