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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 34092C3F2D2 for ; Fri, 28 Feb 2020 23:04:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DA914246AE for ; Fri, 28 Feb 2020 23:04:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="ELQ4kFs6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DA914246AE Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=broadcom.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 691226B0005; Fri, 28 Feb 2020 18:04:15 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6423E6B0006; Fri, 28 Feb 2020 18:04:15 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 557566B0007; Fri, 28 Feb 2020 18:04:15 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0148.hostedemail.com [216.40.44.148]) by kanga.kvack.org (Postfix) with ESMTP id 3BFF86B0005 for ; Fri, 28 Feb 2020 18:04:15 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id EF408180AD5DA for ; Fri, 28 Feb 2020 23:04:14 +0000 (UTC) X-FDA: 76541066028.11.lunch03_7f13fc7cb93e X-HE-Tag: lunch03_7f13fc7cb93e X-Filterd-Recvd-Size: 3811 Received: from mail-io1-f50.google.com (mail-io1-f50.google.com [209.85.166.50]) by imf46.hostedemail.com (Postfix) with ESMTP for ; Fri, 28 Feb 2020 23:04:14 +0000 (UTC) Received: by mail-io1-f50.google.com with SMTP id c17so5321572ioc.4 for ; Fri, 28 Feb 2020 15:04:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=cQ+2Pdo45kYJX4JsmwNIM+Nx5baWpWMGHajxnLK5ZDs=; b=ELQ4kFs6JU0+RPYzGlzR4BRUdylOO2JBduiuRepI82OoqacvsMaXSd0TzY9HzPVIde xCTIog8Aus+w1AkOzfluBBVSmavoyVWYx8GxiEV9VX/kLj19mmLyG5N5BcqctXlYv64j 4eHmzOxWRwvoZjugXHfoR+MojQOfx02d38RVU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=cQ+2Pdo45kYJX4JsmwNIM+Nx5baWpWMGHajxnLK5ZDs=; b=PDejm6gg5ovGbQ0FuF1XAzytTIN/Mn3srAgZrN4EGcG0mIijAajFUzCBTst/lrwLIt 2nPHe4oIS9isPB4nlH6F3TkoTsjUvk1ygcAypHE0UukyV+thF/TXBuM8dlEBB9Y++MQK 67qAdAVcHEkvAfcy9YlIAy24R/tWO3lrZJ1MnvFk5S4TXAcFAcKAcmHvjSIaQYQXd33a 9LCbkDfbcqN0H5faoL2dOdJbpt1fwwltY/c6vI60HImIAUl4oTztWOZfEqbv9FyLh+E1 Wady36WQNBnS7twRJqvRV/fDYHgekEkE+TXf3n0ctw52L7y5qAGjAcQcycPaUufWS6dJ Aymg== X-Gm-Message-State: APjAAAVVj9CQB1bS4NM2wDYvyC1jJO0Nd+H+JW81hjPyiXkKBJwT0jQS /kg16tg7TFLV6c+ZqbqplcYdB3xmsKpS2mNLssEJ8Q== X-Google-Smtp-Source: APXvYqxCvdaiNj9AsdAycV4CmQ3WoFjrIzic5+2Rwr8DzsIj8UEgVJ7rumXoxn9krme0/0PWkvmXTsVZXC64Wp73pCQ= X-Received: by 2002:a6b:3742:: with SMTP id e63mr5388713ioa.303.1582931053745; Fri, 28 Feb 2020 15:04:13 -0800 (PST) MIME-Version: 1.0 References: <8f82edf2-7313-eb4c-f68e-ff18f7a5e919@suse.cz> <20200227174838.GI3281767@arrakis.emea.arm.com> <13501c8a45e8fd8d98d727f036e96c54faa8425a.camel@suse.de> In-Reply-To: From: Jonathan Richardson Date: Fri, 28 Feb 2020 15:04:02 -0800 Message-ID: Subject: Re: cma can't activate area on arm64 To: Robin Murphy Cc: Nicolas Saenz Julienne , Catalin Marinas , Vlastimil Babka , linux-mm@kvack.org, akpm@linux-foundation.org, "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="UTF-8" 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: > [ 0.000000] efi: SMBIOS=0x85c90000 SMBIOS 3.0=0x85a20000 ACPI > 2.0=0x85d50000 MEMATTR=0x8945e118 MEMRESERVE=0x85f85018 > [ 0.000000] crashkernel reserved: 0x00000000e0000000 - > 0x0000000100000000 (512 MB) > [ 0.000000] cma: Reserved 1024 MiB at 0x00000000a0000000 > ... > [ 0.000000] Zone ranges: > [ 0.000000] DMA [mem 0x0000000080000000-0x00000000bfffffff] > [ 0.000000] DMA32 [mem 0x00000000c0000000-0x00000000ffffffff] > > Well there's your problem - both zones are only nominally 1GB to begin > with, and both have stuff in them before we even get to placing CMA. To > be honest, even without ZONE_DMA that looks pretty tight. > > Robin. OK I see. I don't get the zone range debugs with my working vs generic defconfig. I'm not sure why. We have quite a bit reserved memory. I understand better what's happening now, thank you. Jon