From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 90BA81865FA; Mon, 24 Nov 2025 13:23:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763990588; cv=none; b=UM7yfSiVV1IfuWPlRRX/OGBKrzaEAc0H/WsZUF8NRIqB9ueDVGgbYES3fxEwgw258iftpA2S+0kZN1Ej1EskwNsz+pXNpPUpTpHig+TiRIozCvIreAcjlEfMMVUAyHLDOlH6mxEXeoIH806Ek/Raca+O/j4xe2+m/rjsq7HcYFY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763990588; c=relaxed/simple; bh=sJHaIRnx36dzxhiGdyM8d4HIhQLew91HQNz728XfFxM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WG11IwUn+HrO9I6sJJOIAcVRZ6iO0wGiI2NHtTHsfOwO82WNOU7L39UvB+Us1yvB6XJVM/S4+jPUMTju+Gwo5chLFI72ZuZLNrGL9EH9izoALtSEIYSvHnPrHZW9uj9IyJ7Kh7BbW0X7pprC4Egp0JYIJ03NXho+DXxDWRXplhQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com 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 282AA1595; Mon, 24 Nov 2025 05:22:57 -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 787003F73B; Mon, 24 Nov 2025 05:22:59 -0800 (PST) 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" , 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 v5 04/12] sparc/mm: implement arch_flush_lazy_mmu_mode() Date: Mon, 24 Nov 2025 13:22:20 +0000 Message-ID: <20251124132228.622678-5-kevin.brodsky@arm.com> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20251124132228.622678-1-kevin.brodsky@arm.com> References: <20251124132228.622678-1-kevin.brodsky@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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. Note: the additional this_cpu_ptr() call on the arch_leave_lazy_mmu_mode() path will be removed in a subsequent patch. Acked-by: David Hildenbrand Signed-off-by: Kevin Brodsky --- arch/sparc/include/asm/tlbflush_64.h | 2 +- arch/sparc/mm/tlb.c | 9 ++++++++- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/arch/sparc/include/asm/tlbflush_64.h b/arch/sparc/include/asm/tlbflush_64.h index 8b8cdaa69272..925bb5d7a4e1 100644 --- a/arch/sparc/include/asm/tlbflush_64.h +++ b/arch/sparc/include/asm/tlbflush_64.h @@ -43,8 +43,8 @@ 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_flush_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/sparc/mm/tlb.c b/arch/sparc/mm/tlb.c index a35ddcca5e76..7b5dfcdb1243 100644 --- a/arch/sparc/mm/tlb.c +++ b/arch/sparc/mm/tlb.c @@ -59,12 +59,19 @@ void arch_enter_lazy_mmu_mode(void) tb->active = 1; } -void arch_leave_lazy_mmu_mode(void) +void arch_flush_lazy_mmu_mode(void) { struct tlb_batch *tb = this_cpu_ptr(&tlb_batch); if (tb->tlb_nr) flush_tlb_pending(); +} + +void arch_leave_lazy_mmu_mode(void) +{ + struct tlb_batch *tb = this_cpu_ptr(&tlb_batch); + + arch_flush_lazy_mmu_mode(); tb->active = 0; preempt_enable(); } -- 2.51.2