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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 AF251C433DF for ; Fri, 15 May 2020 13:03:19 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 88D8D207DA for ; Fri, 15 May 2020 13:03:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 88D8D207DA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3EBE98E0008; Fri, 15 May 2020 09:03:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 39B938E0005; Fri, 15 May 2020 09:03:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2B15C8E0008; Fri, 15 May 2020 09:03:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0161.hostedemail.com [216.40.44.161]) by kanga.kvack.org (Postfix) with ESMTP id 0FABC8E0005 for ; Fri, 15 May 2020 09:03:19 -0400 (EDT) Received: from smtpin13.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id C6B215DFE for ; Fri, 15 May 2020 13:03:18 +0000 (UTC) X-FDA: 76818969276.13.sign29_7430bf4b51f0b X-HE-Tag: sign29_7430bf4b51f0b X-Filterd-Recvd-Size: 2055 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf29.hostedemail.com (Postfix) with ESMTP for ; Fri, 15 May 2020 13:03:18 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 30290ABC7; Fri, 15 May 2020 13:03:19 +0000 (UTC) Date: Fri, 15 May 2020 15:03:13 +0200 From: Joerg Roedel To: Andy Lutomirski Cc: Joerg Roedel , X86 ML , "H. Peter Anvin" , Dave Hansen , Peter Zijlstra , "Rafael J. Wysocki" , Arnd Bergmann , Andrew Morton , Steven Rostedt , Vlastimil Babka , Michal Hocko , Matthew Wilcox , LKML , Linux ACPI , linux-arch , Linux-MM Subject: Re: [PATCH v2 0/7] mm: Get rid of vmalloc_sync_(un)mappings() Message-ID: <20200515130313.GI8135@suse.de> References: <20200513152137.32426-1-joro@8bytes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) 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: On Wed, May 13, 2020 at 09:01:04AM -0700, Andy Lutomirski wrote: > I would love to see a followup patch that preallocates the vmalloc > region on 64-bit and compiles out pgd_list and all of the associated > gunk. Looked a bit into this, with pre-allocation and a few more changes all but one users of pgd_list and pgd_lock can be get rid of on x86-64. But there is the XEN-PV code which also needs to traverse pgd_list, and I am not sure how to get rid of that. Regards, Joerg