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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 F0299C433DB for ; Mon, 29 Mar 2021 09:00:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9BFA261919 for ; Mon, 29 Mar 2021 09:00:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236103AbhC2I76 (ORCPT ); Mon, 29 Mar 2021 04:59:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:55206 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234963AbhC2Ihn (ORCPT ); Mon, 29 Mar 2021 04:37:43 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6561661932; Mon, 29 Mar 2021 08:37:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1617007063; bh=K2KqSq9UtR/PafNG3EbL9FiHQwaDnKkzBeQOM8J6bK0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FCkvCHzIxPBBFG08oLDkh6EFAYw8+/cY0bHVA8D/Kkn/caWaTgF5b2tFAcCHB7sXV 6daNchCg5wEzlrCyxoFvGyGhoVyUTTTCuSVw/8iYr2ovULv4Byy1NEyhDyWdf3thov oGChxAeqkkkq/HQbnPQI6jTrkpXQWftqTWqPEsqs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Boris Ostrovsky , Sasha Levin Subject: [PATCH 5.11 208/254] xen/x86: make XEN_BALLOON_MEMORY_HOTPLUG_LIMIT depend on MEMORY_HOTPLUG Date: Mon, 29 Mar 2021 09:58:44 +0200 Message-Id: <20210329075639.930781487@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210329075633.135869143@linuxfoundation.org> References: <20210329075633.135869143@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Roger Pau Monne [ Upstream commit 2b514ec72706a31bea0c3b97e622b81535b5323a ] The Xen memory hotplug limit should depend on the memory hotplug generic option, rather than the Xen balloon configuration. It's possible to have a kernel with generic memory hotplug enabled, but without Xen balloon enabled, at which point memory hotplug won't work correctly due to the size limitation of the p2m. Rename the option to XEN_MEMORY_HOTPLUG_LIMIT since it's no longer tied to ballooning. Fixes: 9e2369c06c8a18 ("xen: add helpers to allocate unpopulated memory") Signed-off-by: Roger Pau Monné Reviewed-by: Boris Ostrovsky Link: https://lore.kernel.org/r/20210324122424.58685-2-roger.pau@citrix.com Signed-off-by: Boris Ostrovsky Signed-off-by: Sasha Levin --- arch/x86/xen/p2m.c | 4 ++-- drivers/xen/Kconfig | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index a3cc33091f46..bee51ac92a18 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -98,8 +98,8 @@ EXPORT_SYMBOL_GPL(xen_p2m_size); unsigned long xen_max_p2m_pfn __read_mostly; EXPORT_SYMBOL_GPL(xen_max_p2m_pfn); -#ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG_LIMIT -#define P2M_LIMIT CONFIG_XEN_BALLOON_MEMORY_HOTPLUG_LIMIT +#ifdef CONFIG_XEN_MEMORY_HOTPLUG_LIMIT +#define P2M_LIMIT CONFIG_XEN_MEMORY_HOTPLUG_LIMIT #else #define P2M_LIMIT 0 #endif diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 41645fe6ad48..ea0efd290c37 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -50,11 +50,11 @@ config XEN_BALLOON_MEMORY_HOTPLUG SUBSYSTEM=="memory", ACTION=="add", RUN+="/bin/sh -c '[ -f /sys$devpath/state ] && echo online > /sys$devpath/state'" -config XEN_BALLOON_MEMORY_HOTPLUG_LIMIT +config XEN_MEMORY_HOTPLUG_LIMIT int "Hotplugged memory limit (in GiB) for a PV guest" default 512 depends on XEN_HAVE_PVMMU - depends on XEN_BALLOON_MEMORY_HOTPLUG + depends on MEMORY_HOTPLUG help Maxmium amount of memory (in GiB) that a PV guest can be expanded to when using memory hotplug. -- 2.30.1