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 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 26574C00140 for ; Wed, 24 Aug 2022 09:12:26 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.392300.630552 (Exim 4.92) (envelope-from ) id 1oQmQm-0007bk-Tg; Wed, 24 Aug 2022 09:12:12 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 392300.630552; Wed, 24 Aug 2022 09:12:12 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1oQmQm-0007bd-Q7; Wed, 24 Aug 2022 09:12:12 +0000 Received: by outflank-mailman (input) for mailman id 392300; Wed, 24 Aug 2022 09:12:11 +0000 Received: from mail.xenproject.org ([104.130.215.37]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1oQmQl-0007bX-Ed for xen-devel@lists.xenproject.org; Wed, 24 Aug 2022 09:12:11 +0000 Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1oQmQl-0000O9-2O; Wed, 24 Aug 2022 09:12:11 +0000 Received: from [54.239.6.185] (helo=[192.168.29.89]) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1oQmQk-0000eZ-Rg; Wed, 24 Aug 2022 09:12:10 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:Cc:To:Subject:MIME-Version:Date:Message-ID; bh=QiHRl3RIqzXnjebnN1ENkRNyAHOBjxUqBnDH+nC8cbA=; b=jtqvDVQPuVEUeLrmsQrgOnVZfK KsYOel7znTZw/pg2SR7PofLO8v0p7wce9mzElwd/4sqkrvmDPXSvhr8GCjVAy2O9CW+wN5++bEtsL LH43kgCIdsf0OKlXSnPpOeAyn00N9kVqtuoYOUYFVu5aYWoy9BCjkesmcpnTiZEssp6w=; Message-ID: Date: Wed, 24 Aug 2022 10:12:08 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.1.2 Subject: Re: [PATCH v10 6/9] xen: unpopulate memory when domain is static Content-Language: en-US To: Penny Zheng , xen-devel@lists.xenproject.org Cc: wei.chen@arm.com, Andrew Cooper , George Dunlap , Jan Beulich , Stefano Stabellini , Wei Liu References: <20220816023658.3551936-1-Penny.Zheng@arm.com> <20220816023658.3551936-7-Penny.Zheng@arm.com> From: Julien Grall In-Reply-To: <20220816023658.3551936-7-Penny.Zheng@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Penny, On 16/08/2022 03:36, Penny Zheng wrote: > Today when a domain unpopulates the memory on runtime, they will always > hand the memory back to the heap allocator. And it will be a problem if domain > is static. > > Pages as guest RAM for static domain shall be reserved to only this domain > and not be used for any other purposes, so they shall never go back to heap > allocator. > > This commit puts reserved pages on the new list resv_page_list only after > having taken them off the "normal" list, when the last ref dropped. > > Signed-off-by: Penny Zheng Other than Jan's comment: Acked-by: Julien Grall AFAICT, patch #2 needs some tweak. So I assuming this will need a respin. If not, I can possibly handle the change while committing if you provide a new version of the commit message. Cheers, -- Julien Grall