Received: by 2002:a25:6193:0:0:0:0:0 with SMTP id v141csp4951972ybb; Tue, 24 Mar 2020 08:16:19 -0700 (PDT) X-Google-Smtp-Source: ADFU+vuSj0atSALFq6OHzcXiYsWqG1PMMKr0bnNKI1WF8nsZ6qdLn82NzZjjrG2lxL7ej+T6EC6h X-Received: by 2002:aca:d705:: with SMTP id o5mr3535491oig.67.1585062979422; Tue, 24 Mar 2020 08:16:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1585062979; cv=none; d=google.com; s=arc-20160816; b=LlNT0t6YfkerhDHxAvXZIDpza/yxEkIv8X2NhcQFHlZNys/tFgl3LxRV3O377sX1YX KxogPfT4O0sC0d/qsALA6f8LdZ9PvaRqKBuHcK69bz8UjTWzcxehrVZHaLcCUkitP0DL vv/ni81GGMluR8WKWkeX68LHcQC7FMRfAL4nazqT+JpDT3KigtJzxfF8JYaKEKjpYO68 P92uVmuKbHv+BZU1tZxy8kGq6iu4gyTfACBOZxbu3oLraJLXTKbecdK7fPBx9m+IuDBZ Khk+DJVPb2w0kfdK8viS3KUjvTNcgFm5XQ2ZdQ5uKDO4OLRsD1G9zJT/A4jU90KncgJh g+fw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject; bh=SW1z4XPqLqenmiaE7oGpXkH9wdVX5n3a7SGLgsaWWGw=; b=IzKEsr4d4rB68yCiAi21JwwcHy71HtFW6+MsDS4KXE4AH0hMNHyP2+ABzx/kwuIpr9 MNYqAWn/XXswr1Y1nBJPYyv5wAukz0Bx4HGc9T1295/NCDFhhjSAtkwmwLd0mBhE4MUf Cejct8QdHFDGPx8vxU3CroMXQI66bp2r6F5WPcDR/uD5OEbPxx/ef0i1DaOfrQrj0Ngi 4mVMV/cmkkEkJJgfEnP0e4ZpAya8wdLfk+mXwWf2ZqwdPi8+h96OlYVQtVFqrxmMhQLd nYpfIjJR+07rNcPnYVbl8I8M+TuIBanEp8I+Gbnxjf8l6p3cs320+fjNfv++c+nY+xNN ZANg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id r21si5810533otp.320.2020.03.24.08.16.04; Tue, 24 Mar 2020 08:16:19 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727791AbgCXPNu (ORCPT + 99 others); Tue, 24 Mar 2020 11:13:50 -0400 Received: from mx2.suse.de ([195.135.220.15]:49428 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727705AbgCXPNu (ORCPT ); Tue, 24 Mar 2020 11:13:50 -0400 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 1820EAB6D; Tue, 24 Mar 2020 15:13:49 +0000 (UTC) Subject: Re: [PATCH 1/2] xen: expand BALLOON_MEMORY_HOTPLUG description To: Roger Pau Monne , linux-kernel@vger.kernel.org Cc: Boris Ostrovsky , Stefano Stabellini , xen-devel@lists.xenproject.org References: <20200324150015.50496-1-roger.pau@citrix.com> From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: <42a7b408-1ea1-04fa-e70b-cbdaba54c558@suse.com> Date: Tue, 24 Mar 2020 16:13:48 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200324150015.50496-1-roger.pau@citrix.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 24.03.20 16:00, Roger Pau Monne wrote: > To mention it's also useful for PVH or HVM domains that require > mapping foreign memory or grants. > > Signed-off-by: Roger Pau Monné > --- > Cc: Boris Ostrovsky > Cc: Juergen Gross > Cc: Stefano Stabellini > Cc: xen-devel@lists.xenproject.org > --- > drivers/xen/Kconfig | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig > index 61212fc7f0c7..57ddd6f4b729 100644 > --- a/drivers/xen/Kconfig > +++ b/drivers/xen/Kconfig > @@ -19,6 +19,10 @@ config XEN_BALLOON_MEMORY_HOTPLUG > It is very useful on critical systems which require long > run without rebooting. > > + It's also very useful for translated domains (PVH or HVM) to obtain I'd rather say "(non PV)" or "(PVH, HVM or Arm)". > + unpopulated physical memory ranges to use in order to map foreign > + memory or grants. > + > Memory could be hotplugged in following steps: > > 1) target domain: ensure that memory auto online policy is in > With that: Reviewed-by: Juergen Gross Juergen