From nobody Sun Feb 8 21:28:31 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linux.intel.com ARC-Seal: i=1; a=rsa-sha256; t=1573130522; cv=none; d=zoho.com; s=zohoarc; b=LFiH8eE+8nAaD/IO9k9pglgRzyfLFw0iJWrOGKDOhyly52GlA8RvjVrkXzmBvURNswXOIr2bq/2rE8fMa83F7KF01Yw9FldBl59mr+YrEsGK7ZaAf8pHG2FoaXHgmxlql9s7rwtf8W5YRAvldmKpyTsmY74Uv49PkLtK9O8Zif4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1573130522; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=p2YWUbKhWHtdMUAskHidy01h01yZXTKliiAZ7KnwQdM=; b=JMyvSV1Ck4UeyQPjVM7CobDelAvD25dUtHpTvVYcEeRYwpFJrcDa97DDD7GpcfDfSHflecGrj3EJv1UPZXv8A3R7FS0MT5uw8xmZrA/zaE9Cs1xRZLRttrz0htu77TkgLd7HO9mVO/akcgEdM6SVX8oSHLYnepzsEXY5JgQhBpE= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1573130522595957.4303715965789; Thu, 7 Nov 2019 04:42:02 -0800 (PST) Received: from localhost ([::1]:41642 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iSh6v-0005zN-4H for importer@patchew.org; Thu, 07 Nov 2019 07:42:01 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:58935) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iSh4f-00040i-WE for qemu-devel@nongnu.org; Thu, 07 Nov 2019 07:39:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iSh4e-0002rt-W6 for qemu-devel@nongnu.org; Thu, 07 Nov 2019 07:39:41 -0500 Received: from mga06.intel.com ([134.134.136.31]:63431) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iSh4e-0002qi-OF for qemu-devel@nongnu.org; Thu, 07 Nov 2019 07:39:40 -0500 Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 07 Nov 2019 04:39:40 -0800 Received: from richard.sh.intel.com (HELO localhost) ([10.239.159.54]) by orsmga005.jf.intel.com with ESMTP; 07 Nov 2019 04:39:39 -0800 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,278,1569308400"; d="scan'208";a="377408597" From: Wei Yang To: quintela@redhat.com, dgilbert@redhat.com Subject: [Patch v2 4/6] migration/postcopy: set all_zero to true on the first target page Date: Thu, 7 Nov 2019 20:39:05 +0800 Message-Id: <20191107123907.29791-5-richardw.yang@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191107123907.29791-1-richardw.yang@linux.intel.com> References: <20191107123907.29791-1-richardw.yang@linux.intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.31 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org, Wei Yang Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" For the first target page, all_zero is set to true for this round check. After target_pages introduced, we could leverage this variable instead of checking the address offset. Signed-off-by: Wei Yang Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Juan Quintela --- migration/ram.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/migration/ram.c b/migration/ram.c index 5c05376d8d..b5759793a9 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -4067,7 +4067,7 @@ static int ram_load_postcopy(QEMUFile *f) page_buffer =3D postcopy_host_page + ((uintptr_t)host & (block->page_size - 1)); /* If all TP are zero then we can optimise the place */ - if (!((uintptr_t)host & (block->page_size - 1))) { + if (target_pages =3D=3D 1) { all_zero =3D true; } else { /* not the 1st TP within the HP */ --=20 2.17.1