From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id DB757A04B1; Mon, 23 Nov 2020 18:01:28 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 231EDC8E6; Mon, 23 Nov 2020 18:01:27 +0100 (CET) Received: from mail-pl1-f171.google.com (mail-pl1-f171.google.com [209.85.214.171]) by dpdk.org (Postfix) with ESMTP id A749737AF for ; Mon, 23 Nov 2020 18:01:25 +0100 (CET) Received: by mail-pl1-f171.google.com with SMTP id u2so9124683pls.10 for ; Mon, 23 Nov 2020 09:01:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:subject:message-id:mime-version :content-transfer-encoding; bh=7w5vZ5iKxT1FFiAqGasRTmByiN/d1ABAa/GEiCNYqq8=; b=urdZasdN29y6T9O+dBQPAbeKyKsOChM47NmrXbEce9Mt+wl0ZSY7XGwnmLho2ttj5v xtij/ILXWUar8a3r7+7s2O5HKwnLr437r3chPumuFzTcZ/5AWT6K6uDV/nK0mtNP3OFC WBzKiGLF1JYMmxi6AtFC/juCmF87eOgxuA/NOElg8dV6ZpUhhpUZ2FXprfcaVuxD40Bm l5QJ7fus2pfMZa47eJ4Rvh1vrYfs7HXutLrVwYCUCK+aSyM6bYCE5AE6YDpYdYb9gr1/ bUJyuhTB4B4w5DhVdlFAoSFgPulIKkCWGyD0mwGGwWgpLSh+tXKT0ZiE4i26ElFb8pAF V3mA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:mime-version :content-transfer-encoding; bh=7w5vZ5iKxT1FFiAqGasRTmByiN/d1ABAa/GEiCNYqq8=; b=eBIGsKUuQCMUAuqymhV1gFZD+C+XDWzFX+PzwbK15zJKnDO1NgGQmt7RWsyctfgNfI TsMlYc/s+RspTd2TOpcZTC77Lr6usT1WwYKYBfQl+xTfTQRSUMJKze50cpaRzmnW6lGf Mhzjuoln4hxtLbLaFTuBpw64JY+AWDau3p8o3SVzDNWi9GP6C+WYzWJDn0BLwJHGLNLt fBN5sk1GwtIdjGGFUhXDCjk8ZvVRQh1ySA+NwNTeQQS4RWkTzR9e0F/76bal8vqpH65S 9WzWxA8rv3u2iXTiJ9VJBGnjAIJze8ei2sL1MGoHnu+jXOFWZn32Ssz5vcp62R3qAGtL FzIQ== X-Gm-Message-State: AOAM533OF3heanXRbUvZA6reqozQsjjxqSimxlrWlBQYFLp5EOaFn+1U ZtEUDQ9aKjaAH6pqEQrRRRerHU98UicXiiG+ X-Google-Smtp-Source: ABdhPJw9V8kmbRkwB1ZR7FdwE6iRMm4kNY5IOoaAQM56/IgCX7Y1EEaDqQJmdGRQlnYx3XDSS684+A== X-Received: by 2002:a17:902:aa4b:b029:d8:f87e:1f3c with SMTP id c11-20020a170902aa4bb02900d8f87e1f3cmr424223plr.23.1606150882467; Mon, 23 Nov 2020 09:01:22 -0800 (PST) Received: from hermes.local (204-195-22-127.wavecable.com. [204.195.22.127]) by smtp.gmail.com with ESMTPSA id z10sm4388119pfa.149.2020.11.23.09.01.21 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Nov 2020 09:01:22 -0800 (PST) Date: Mon, 23 Nov 2020 09:01:14 -0800 From: Stephen Hemminger To: dev@dpdk.org Message-ID: <20201123090114.75ea1bb0@hermes.local> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: [dpdk-dev] DPDK hugepages are movable? X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" There is a problem being discussed in the Linux memory management list that maybe of interest to DPDK developers. The DPDK/ VFIO assumes that it can do DMA from hugepaged memory because it is pinned. But in reality the hugepages are still in ZONE_MOVABLE. You can follow the thread here: https://marc.info/?l=linux-mm&m=160590410611711&w=2