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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 8FF6EC43331 for ; Tue, 24 Mar 2020 15:00:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6587B20775 for ; Tue, 24 Mar 2020 15:00:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="RO5hUxKx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727755AbgCXPA0 (ORCPT ); Tue, 24 Mar 2020 11:00:26 -0400 Received: from esa4.hc3370-68.iphmx.com ([216.71.155.144]:31012 "EHLO esa4.hc3370-68.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727065AbgCXPA0 (ORCPT ); Tue, 24 Mar 2020 11:00:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1585062025; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=uz4Sy1jYWR9Vj5L6zBEJzx886dGphqoV9Swq2hMNCsc=; b=RO5hUxKxI2tACwq5lST8VKqqpVvklL25YxYCdaQDPKHJ/aydlmiBdkHb EC8A46QNtbRDi+SvoaRNBkhr2rQGACg/yD69k5k0rJw1r+rUxhTTwEpsx cW0IUrUHK34H4GCBpdf4daXxXYP9/twkDXwGZSGNLNtT2VICvqbOSF5y9 4=; Authentication-Results: esa4.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none; spf=None smtp.pra=roger.pau@citrix.com; spf=Pass smtp.mailfrom=roger.pau@citrix.com; spf=None smtp.helo=postmaster@mail.citrix.com Received-SPF: None (esa4.hc3370-68.iphmx.com: no sender authenticity information available from domain of roger.pau@citrix.com) identity=pra; client-ip=162.221.158.21; receiver=esa4.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="roger.pau@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa4.hc3370-68.iphmx.com: domain of roger.pau@citrix.com designates 162.221.158.21 as permitted sender) identity=mailfrom; client-ip=162.221.158.21; receiver=esa4.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="roger.pau@citrix.com"; x-conformance=sidf_compatible; x-record-type="v=spf1"; x-record-text="v=spf1 ip4:209.167.231.154 ip4:178.63.86.133 ip4:195.66.111.40/30 ip4:85.115.9.32/28 ip4:199.102.83.4 ip4:192.28.146.160 ip4:192.28.146.107 ip4:216.52.6.88 ip4:216.52.6.188 ip4:162.221.158.21 ip4:162.221.156.83 ip4:168.245.78.127 ~all" Received-SPF: None (esa4.hc3370-68.iphmx.com: no sender authenticity information available from domain of postmaster@mail.citrix.com) identity=helo; client-ip=162.221.158.21; receiver=esa4.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: YCwg7q0KwdVY96iyKyprGhvcUpIMhF5ZtrnBAK+bwM9Pfso8az5/0cXLxWjW0rbNRCmPQce0YJ xunPaMFS2oSKdxY5wn1t7mHyGBgWaX59MPoIp0Qzfkdlz5+B3yOzrxelV39hxfGRiZ8/1DuWUB DAR2gmxTdHlMbVOhR2+A2IZSwRt67js3hq2xZTgY9bZG1Bdi93cvBm/7jVXTvJ5G8Ju1JeclXk RYR1FKQkS3y4JvmUfE0PvGnnHY6DbuXqgxw++MAiud9kpB/aqGn0yd/or4ZEjxIbTD1EQlz4hQ J28= X-SBRS: 2.7 X-MesageID: 15193080 X-Ironport-Server: esa4.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.72,300,1580792400"; d="scan'208";a="15193080" From: Roger Pau Monne To: CC: Roger Pau Monne , Ian Jackson , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , Subject: [PATCH 2/2] xen: enable BALLOON_MEMORY_HOTPLUG by default Date: Tue, 24 Mar 2020 16:00:15 +0100 Message-ID: <20200324150015.50496-2-roger.pau@citrix.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200324150015.50496-1-roger.pau@citrix.com> References: <20200324150015.50496-1-roger.pau@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Without it a PVH dom0 is mostly useless, as it would balloon down huge amounts of RAM in order get physical address space to map foreign memory and grants, ultimately leading to an out of memory situation. Such option is also needed for HVM or PVH driver domains, since they also require mapping grants into physical memory regions. Suggested-by: Ian Jackson Signed-off-by: Roger Pau Monné --- Cc: Boris Ostrovsky Cc: Juergen Gross Cc: Stefano Stabellini Cc: xen-devel@lists.xenproject.org --- drivers/xen/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 57ddd6f4b729..c344bcffd89d 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -13,6 +13,7 @@ config XEN_BALLOON config XEN_BALLOON_MEMORY_HOTPLUG bool "Memory hotplug support for Xen balloon driver" depends on XEN_BALLOON && MEMORY_HOTPLUG + default y help Memory hotplug support for Xen balloon driver allows expanding memory available for the system above limit declared at system startup. -- 2.25.0