From nobody Sat Feb 7 15:29:36 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=virtuozzo.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1531928647489451.45537557813657; Wed, 18 Jul 2018 08:44:07 -0700 (PDT) Received: from localhost ([::1]:37255 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ffocY-0004WK-Br for importer@patchew.org; Wed, 18 Jul 2018 11:44:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52977) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ffoal-0003Hq-KB for qemu-devel@nongnu.org; Wed, 18 Jul 2018 11:42:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ffoag-0000Hp-JN for qemu-devel@nongnu.org; Wed, 18 Jul 2018 11:42:15 -0400 Received: from relay.sw.ru ([185.231.240.75]:36390) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ffoag-0000FW-3V for qemu-devel@nongnu.org; Wed, 18 Jul 2018 11:42:10 -0400 Received: from vz-out.virtuozzo.com ([185.231.240.5] helo=dptest2.qa.sw.ru) by relay.sw.ru with esmtp (Exim 4.90_1) (envelope-from ) id 1ffoae-0006bu-7O; Wed, 18 Jul 2018 18:42:08 +0300 From: Denis Plotnikov To: dgilbert@redhat.com, quintela@redhat.com, pbonzini@redhat.com Date: Wed, 18 Jul 2018 18:41:52 +0300 Message-Id: <20180718154200.26777-10-dplotnikov@virtuozzo.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180718154200.26777-1-dplotnikov@virtuozzo.com> References: <20180718154200.26777-1-dplotnikov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 Subject: [Qemu-devel] [PATCH v1 09/17] background snapshot: extend RAM request for holding a page copy pointer X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This pointer is going to be used to transfer a memory. Once the memory page is copied the content the snapshot interested in is saved for writing and we can make the page writable again. Signed-off-by: Denis Plotnikov --- migration/ram.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/migration/ram.c b/migration/ram.c index ce3dead932..dc7dfe0726 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -188,6 +188,7 @@ struct RAMSrcPageRequest { RAMBlock *rb; hwaddr offset; hwaddr len; + void *page_copy; =20 QSIMPLEQ_ENTRY(RAMSrcPageRequest) next_req; }; @@ -265,6 +266,8 @@ struct PageSearchStatus { unsigned long page; /* Set once we wrap around */ bool complete_round; + /* Pointer to the cached page */ + void *page_copy; }; typedef struct PageSearchStatus PageSearchStatus; =20 --=20 2.17.0