From patchwork Fri Feb 2 08:07:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Roberts X-Patchwork-Id: 13542354 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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64665C47258 for ; Fri, 2 Feb 2024 08:09:33 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E4F646B00A7; Fri, 2 Feb 2024 03:09:32 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id DB0196B00A9; Fri, 2 Feb 2024 03:09:32 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C9F336B00AA; Fri, 2 Feb 2024 03:09:32 -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 BB6E46B00A7 for ; Fri, 2 Feb 2024 03:09:32 -0500 (EST) Received: from smtpin21.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 9D8F81A05B2 for ; Fri, 2 Feb 2024 08:09:32 +0000 (UTC) X-FDA: 81746139384.21.0D9EDAB Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf22.hostedemail.com (Postfix) with ESMTP id 09075C0014 for ; Fri, 2 Feb 2024 08:09:30 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=none; spf=pass (imf22.hostedemail.com: domain of ryan.roberts@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=ryan.roberts@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=1706861371; 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=nA5bUrRt6blUgSGh1rucsmmbrNp8un7UcFTvjqqTNjA=; b=AvK2u3cGOWtLLQIKu2hJ+BBwlMNd6bQ1QzTMoxUjGnjDEGlqPRpQM/l015bNxsHEwLXQV3 hPX3RHLq08e0bIjVtbRM8YrKoFom9xJ1+sMJ6/Is7X0BzuIEj/IVX7DT++aCg+5VRiLJe5 u5xvOv2t7PfCpkphVeSCBb4DbF7l4i4= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1706861371; a=rsa-sha256; cv=none; b=lsn1QUvyk38wiP1Lg6kitc9K6eIdMql9R1bQcYyPSBGP9lxyUeJM9NscPKqeAgoLV+p42J nZp/7+XklZZlzna41HNEgGpGB6mAR7ZPXoADXDh12s39XJTiQabousPu/kjwhKdfCIkhSk zYjTWibA23EcqDRLFjzd3PUAwLVH3mk= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=none; spf=pass (imf22.hostedemail.com: domain of ryan.roberts@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=ryan.roberts@arm.com; dmarc=pass (policy=none) header.from=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 704231BC0; Fri, 2 Feb 2024 00:10:12 -0800 (PST) Received: from e125769.cambridge.arm.com (e125769.cambridge.arm.com [10.1.196.26]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 82DE43F5A1; Fri, 2 Feb 2024 00:09:21 -0800 (PST) From: Ryan Roberts To: Catalin Marinas , Will Deacon , Ard Biesheuvel , Marc Zyngier , James Morse , Andrey Ryabinin , Andrew Morton , Matthew Wilcox , Mark Rutland , David Hildenbrand , Kefeng Wang , John Hubbard , Zi Yan , Barry Song <21cnbao@gmail.com>, Alistair Popple , Yang Shi , Nicholas Piggin , Christophe Leroy , "Aneesh Kumar K.V" , "Naveen N. Rao" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Cc: Ryan Roberts , linux-arm-kernel@lists.infradead.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 18/25] arm64/mm: Split __flush_tlb_range() to elide trailing DSB Date: Fri, 2 Feb 2024 08:07:49 +0000 Message-Id: <20240202080756.1453939-19-ryan.roberts@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240202080756.1453939-1-ryan.roberts@arm.com> References: <20240202080756.1453939-1-ryan.roberts@arm.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: 09075C0014 X-Rspam-User: X-Stat-Signature: nagr7gqnxge1dxafeqqepcnty6hq3mhf X-Rspamd-Server: rspam03 X-HE-Tag: 1706861370-488643 X-HE-Meta: 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 TYr/3YRV bN/dgjWNlYn686ZyFfs5vBbHrjuJf2D7cikUG3rYfmaWh3Nu1xTwx1sDweOJEHs5snsxFyCA3OBGzCRqxD2PubXSfPItIdIsmBAeK5qgQRwextMm71dxEOzxeKIMONyH53Lhv4MBI+v2H7tlHw6Kcf2SY3JR+ltpN/jhXpUVAlm9JPlo08GxA74EpEsLqIRh7m+TbrIGf4X8a/kNJnkaiCsnTqchKBbku9Ld8ZiO81cm8XDwCTux3RSYPp7imvD5L0D+mPSMJvEJOf1Gwl4bzvvFesdmcUonK1sILr69sWMtbRIo= 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: Split __flush_tlb_range() into __flush_tlb_range_nosync() + __flush_tlb_range(), in the same way as the existing flush_tlb_page() arrangement. This allows calling __flush_tlb_range_nosync() to elide the trailing DSB. Forthcoming "contpte" code will take advantage of this when clearing the young bit from a contiguous range of ptes. Tested-by: John Hubbard Signed-off-by: Ryan Roberts Reviewed-by: David Hildenbrand --- arch/arm64/include/asm/tlbflush.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h index 79e932a1bdf8..50a765917327 100644 --- a/arch/arm64/include/asm/tlbflush.h +++ b/arch/arm64/include/asm/tlbflush.h @@ -422,7 +422,7 @@ do { \ #define __flush_s2_tlb_range_op(op, start, pages, stride, tlb_level) \ __flush_tlb_range_op(op, start, pages, stride, 0, tlb_level, false, kvm_lpa2_is_enabled()); -static inline void __flush_tlb_range(struct vm_area_struct *vma, +static inline void __flush_tlb_range_nosync(struct vm_area_struct *vma, unsigned long start, unsigned long end, unsigned long stride, bool last_level, int tlb_level) @@ -456,10 +456,19 @@ static inline void __flush_tlb_range(struct vm_area_struct *vma, __flush_tlb_range_op(vae1is, start, pages, stride, asid, tlb_level, true, lpa2_is_enabled()); - dsb(ish); mmu_notifier_arch_invalidate_secondary_tlbs(vma->vm_mm, start, end); } +static inline void __flush_tlb_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end, + unsigned long stride, bool last_level, + int tlb_level) +{ + __flush_tlb_range_nosync(vma, start, end, stride, + last_level, tlb_level); + dsb(ish); +} + static inline void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) {