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 X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5739C433DF for ; Fri, 22 May 2020 15:43:14 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 763962072C for ; Fri, 22 May 2020 15:43:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="sbCQICTT" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 763962072C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ne/zz3mAVxzHObg2YYFzqV7ZfbdbrulLy/9OEhznJHQ=; b=sbCQICTTy8GXpe EBI4g7UWa7fQBwvGLqUyY3ZeKXj3/hpwnye1XLrzq3Gc/fb8tr4vlBKfSeh2/fp+Vd9KhdcAzOXyX +/6rETBJu7pALg87XJVIrbI3na8/2mJ32oj9lA4bhQFaSGdNaTf6qxA6YjsdXBevD8TnJpkkYL5rr 2dp7MThxW+o7/xEMJx19/LjzgjuVKGXZbhTAG/4d0fVHftD84b8g3IFse67deNkEzmv0yAHI5/2E7 RkVX2XNXforQEJhtkWCRiZOSSGA0UJvFCEXu0Vk34lvzBDuuGzu7EqnUefJP95oQUpTCxPlLx//bk kXyKr4fAnSdFhqgrrzNQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jc9pJ-0003JN-HE; Fri, 22 May 2020 15:43:13 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jc9pG-0003In-Bh for linux-arm-kernel@lists.infradead.org; Fri, 22 May 2020 15:43:11 +0000 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 6B4E555D; Fri, 22 May 2020 08:43:08 -0700 (PDT) Received: from gaia (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 901663F305; Fri, 22 May 2020 08:43:00 -0700 (PDT) Date: Fri, 22 May 2020 16:42:55 +0100 From: Catalin Marinas To: Zhenyu Ye Subject: Re: [PATCH v2 5/6] mm: tlb: Provide flush_*_tlb_range wrappers Message-ID: <20200522154254.GD26492@gaia> References: <20200423135656.2712-1-yezhenyu2@huawei.com> <20200423135656.2712-6-yezhenyu2@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200423135656.2712-6-yezhenyu2@huawei.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200522_084310_442723_376F143D X-CRM114-Status: UNSURE ( 9.86 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, peterz@infradead.org, linux-mm@kvack.org, guohanjun@huawei.com, will@kernel.org, linux-arch@vger.kernel.org, yuzhao@google.com, aneesh.kumar@linux.ibm.com, steven.price@arm.com, arm@kernel.org, Dave.Martin@arm.com, arnd@arndb.de, suzuki.poulose@arm.com, npiggin@gmail.com, zhangshaokun@hisilicon.com, broonie@kernel.org, rostedt@goodmis.org, prime.zeng@hisilicon.com, kuhn.chenqun@huawei.com, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, xiexiangyou@huawei.com, linux-kernel@vger.kernel.org, maz@kernel.org, akpm@linux-foundation.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Apr 23, 2020 at 09:56:55PM +0800, Zhenyu Ye wrote: > diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c > index 3d7c01e76efc..3eff199d3507 100644 > --- a/mm/pgtable-generic.c > +++ b/mm/pgtable-generic.c > @@ -101,6 +101,28 @@ pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address, > > #ifdef CONFIG_TRANSPARENT_HUGEPAGE > > +#ifndef __HAVE_ARCH_FLUSH_PMD_TLB_RANGE > + > +#define FLUSH_Pxx_TLB_RANGE(_pxx) \ > +void flush_##_pxx##_tlb_range(struct vm_area_struct *vma, \ > + unsigned long addr, unsigned long end) \ > +{ \ > + struct mmu_gather tlb; \ > + \ > + tlb_gather_mmu(&tlb, vma->vm_mm, addr, end); \ > + tlb_start_vma(&tlb, vma); \ > + tlb_flush_##_pxx##_range(&tlb, addr, end - addr); \ > + tlb_end_vma(&tlb, vma); \ > + tlb_finish_mmu(&tlb, addr, end); \ > +} I may have confused myself (flush_p??_tlb_* vs. tlb_flush_p??_*) but do actually need this whole tlb_gather thing here? IIUC (by grep'ing), flush_p?d_tlb_range() is only called on huge pages, so we should know the level already. -- Catalin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel