From patchwork Mon Nov 13 15:41:23 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: George Dunlap X-Patchwork-Id: 10056365 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 492BF60365 for ; Mon, 13 Nov 2017 16:00:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 37F792945D for ; Mon, 13 Nov 2017 16:00:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2C71229461; Mon, 13 Nov 2017 16:00:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id BB8882945D for ; Mon, 13 Nov 2017 16:00:53 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eEH7y-0001yr-Dg; Mon, 13 Nov 2017 15:58:26 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eEH7x-0001xk-F7 for xen-devel@lists.xenproject.org; Mon, 13 Nov 2017 15:58:25 +0000 Received: from [193.109.254.147] by server-9.bemta-6.messagelabs.com id 73/27-29052-021C90A5; Mon, 13 Nov 2017 15:58:24 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprGIsWRWlGSWpSXmKPExsXitHSDva7CQc4 og+m/BC2+b5nM5MDocfjDFZYAxijWzLyk/IoE1oyrE7+yFzTzVBw41s3cwNjJ1cXIySEh4C9x 7ctmRhCbTUBPYt7xryxdjBwcIgIqErf3GnQxcnEwC9xhkrhz+TgzSI2wgLfEuY03mUBsFgFVi Z6Fn8F6eQXsJBovNbFDzJSXWPx9JxuIzQkUv/hlJVi9kICtxId1M9khbFWJxQ+OskP0CkqcnP mEBcRmFpCQOPjiBfMERt5ZSFKzkKQWMDKtYlQvTi0qSy3StdRLKspMzyjJTczM0TU0MNPLTS0 uTkxPzUlMKtZLzs/dxAgMHQYg2MF4d1PAIUZJDiYlUV6Vz+xRQnxJ+SmVGYnFGfFFpTmpxYcY ZTg4lCR4p+znjBISLEpNT61Iy8wBBjFMWoKDR0mE1wkkzVtckJhbnJkOkTrFaMzxbObrBmaOa Vdbm5iFWPLy81KlxHmzQUoFQEozSvPgBsGi6xKjrJQwLyPQaUI8BalFuZklqPKvGMU5GJWEeW +ATOHJzCuB2/cK6BQmoFOkQL7gLS5JREhJAeP1d4zDw70bXXel9nm9vN/Jy5/w/XjYC+uPIu+ /OXhcW7J2bsKj8hM+X14by2RkdNVX2W3IicifI3F5Tdusucfn9p9NMDWwTGX8ZKwvfY79+/0r Af4yG/atNDTjeTujQln0wR+xuY/5Dv329Sg+ssXqvHGe/D6m8yV7Z3/Lumyf5ra/6arb3loll uKMREMt5qLiRAD6UqljqQIAAA== X-Env-Sender: prvs=483948db6=George.Dunlap@citrix.com X-Msg-Ref: server-15.tower-27.messagelabs.com!1510588699!63420009!3 X-Originating-IP: [66.165.176.63] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogNjYuMTY1LjE3Ni42MyA9PiAzMDYwNDg=\n, received_headers: No Received headers X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 9883 invoked from network); 13 Nov 2017 15:58:23 -0000 Received: from smtp02.citrix.com (HELO SMTP02.CITRIX.COM) (66.165.176.63) by server-15.tower-27.messagelabs.com with RC4-SHA encrypted SMTP; 13 Nov 2017 15:58:23 -0000 X-IronPort-AV: E=Sophos;i="5.44,389,1505779200"; d="scan'208";a="459182146" From: George Dunlap To: Date: Mon, 13 Nov 2017 15:41:23 +0000 Message-ID: <20171113154126.13038-13-george.dunlap@citrix.com> X-Mailer: git-send-email 2.15.0 In-Reply-To: <20171113154126.13038-1-george.dunlap@citrix.com> References: <20171113154126.13038-1-george.dunlap@citrix.com> MIME-Version: 1.0 Cc: Stefano Stabellini , Wei Liu , Konrad Wilk , Andrew Cooper , Tim Deegan , George Dunlap , Jan Beulich , Tamas K Lengyel , Ian Jackson Subject: [Xen-devel] [PATCH 13/16] SUPPORT.md: Add secondary memory management features X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: George Dunlap Acked-by: Jan Beulich --- CC: Ian Jackson CC: Wei Liu CC: Andrew Cooper CC: Jan Beulich CC: Stefano Stabellini CC: Konrad Wilk CC: Tim Deegan CC: Tamas K Lengyel --- SUPPORT.md | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/SUPPORT.md b/SUPPORT.md index 0f7426593e..3e352198ce 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -187,6 +187,37 @@ Export hypervisor coverage data suitable for analysis by gcov or lcov. Status: Supported +### Memory Sharing + + Status, x86 HVM: Tech Preview + Status, ARM: Tech Preview + +Allow sharing of identical pages between guests + +### Memory Paging + + Status, x86 HVM: Experimenal + +Allow pages belonging to guests to be paged to disk + +### Transcendent Memory + + Status: Experimental + +Transcendent Memory (tmem) allows the creation of hypervisor memory pools +which guests can use to store memory +rather than caching in its own memory or swapping to disk. +Having these in the hypervisor +can allow more efficient aggregate use of memory across VMs. + +### Alternative p2m + + Status, x86 HVM: Tech Preview + Status, ARM: Tech Preview + +Allows external monitoring of hypervisor memory +by maintaining multiple physical to machine (p2m) memory mappings. + ## Resource Management ### CPU Pools