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 D4BCFD5B17D for ; Mon, 15 Dec 2025 15:03:57 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 4C75A6B000A; Mon, 15 Dec 2025 10:03:57 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 450656B000C; Mon, 15 Dec 2025 10:03:57 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2CAAD6B000D; Mon, 15 Dec 2025 10:03:57 -0500 (EST) 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 1C9786B000A for ; Mon, 15 Dec 2025 10:03:57 -0500 (EST) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id CE4DA1402AD for ; Mon, 15 Dec 2025 15:03:56 +0000 (UTC) X-FDA: 84222025272.14.ECD5B9B Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf24.hostedemail.com (Postfix) with ESMTP id 12786180016 for ; Mon, 15 Dec 2025 15:03:54 +0000 (UTC) Authentication-Results: imf24.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf24.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=1765811035; a=rsa-sha256; cv=none; b=BvAc6uyz+qejrKgiNyIn2kyh93+Y0RalNdH/eQlvWlUoYoCtrH8L9cLACKmQ/h7Ca+7Yw4 jYsofI8pW1RBBiSiqtS0gEnrfmsogFQx/k4jxMWMVkrfjtSg+OydDHeD3Ji/44q4jHe1kV /wt99KzCkHHZ92YHdTdn2RnWCdAumPk= ARC-Authentication-Results: i=1; imf24.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf24.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=1765811035; 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=0rF0AsidLeOMu7qD5PDF0s/XHOeU6WMx+Baq4lCM4i8=; b=C/rG8lvywnmRTBvlvJqA5q7UmJ68iUGtK7u+/DKtV2Du77qb6hCVlclNxD5yZZv+13/Ev6 27MYTBBNdRdo98N9GMoUQFHOtH+taAtWYiZQJ2WYSILxpm1mIvKYSOn1WL1Mx1zb7APXbC iBIzIb50Uyt43JjkHWzQmqBb/uz+Ee4= 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 1DD31165C; Mon, 15 Dec 2025 07:03:47 -0800 (PST) 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 F099A3F73B; Mon, 15 Dec 2025 07:03:48 -0800 (PST) From: Kevin Brodsky To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Kevin Brodsky , Alexander Gordeev , Andreas Larsson , Andrew Morton , Anshuman Khandual , Boris Ostrovsky , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dave Hansen , David Hildenbrand , "David S. Miller" , David Woodhouse , "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 , "Ritesh Harjani (IBM)" , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Venkat Rao Bagalkote , 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 v6 03/14] powerpc/mm: implement arch_flush_lazy_mmu_mode() Date: Mon, 15 Dec 2025 15:03:12 +0000 Message-ID: <20251215150323.2218608-4-kevin.brodsky@arm.com> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20251215150323.2218608-1-kevin.brodsky@arm.com> References: <20251215150323.2218608-1-kevin.brodsky@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 12786180016 X-Rspamd-Server: rspam10 X-Stat-Signature: 3bo5kjdg4e4wdfpttrpnsa4qk83srwq1 X-HE-Tag: 1765811034-245213 X-HE-Meta: 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 uzBbeFCS tExtstt7uC/IfAEkdHBDWRfrVvw== 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: Upcoming changes to the lazy_mmu API will cause arch_flush_lazy_mmu_mode() to be called when leaving a nested lazy_mmu section. Move the relevant logic from arch_leave_lazy_mmu_mode() to arch_flush_lazy_mmu_mode() and have the former call the latter. The radix_enabled() check is required in both as arch_flush_lazy_mmu_mode() will be called directly from the generic layer in a subsequent patch. Note: the additional this_cpu_ptr() and radix_enabled() calls on the arch_leave_lazy_mmu_mode() path will be removed in a subsequent patch. Acked-by: David Hildenbrand Tested-by: Venkat Rao Bagalkote Signed-off-by: Kevin Brodsky --- .../powerpc/include/asm/book3s/64/tlbflush-hash.h | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h index 146287d9580f..2d45f57df169 100644 --- a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h +++ b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h @@ -41,7 +41,7 @@ static inline void arch_enter_lazy_mmu_mode(void) batch->active = 1; } -static inline void arch_leave_lazy_mmu_mode(void) +static inline void arch_flush_lazy_mmu_mode(void) { struct ppc64_tlb_batch *batch; @@ -51,12 +51,21 @@ static inline void arch_leave_lazy_mmu_mode(void) if (batch->index) __flush_tlb_pending(batch); +} + +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(); } -#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, -- 2.51.2