From patchwork Wed Jan 20 11:57:23 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Roger Pau Monne X-Patchwork-Id: 8071401 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 94B4E9F6FA for ; Wed, 20 Jan 2016 11:59:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C109A20434 for ; Wed, 20 Jan 2016 11:59:38 +0000 (UTC) Received: from lists.xen.org (lists.xenproject.org [50.57.142.19]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EA27A203B1 for ; Wed, 20 Jan 2016 11:59:37 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xen.org) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aLrOQ-0001YL-KA; Wed, 20 Jan 2016 11:57:42 +0000 Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aLrOP-0001Wm-CI for xen-devel@lists.xenproject.org; Wed, 20 Jan 2016 11:57:41 +0000 Received: from [193.109.254.147] by server-7.bemta-14.messagelabs.com id A1/F8-28221-4367F965; Wed, 20 Jan 2016 11:57:40 +0000 X-Env-Sender: prvs=820e2e984=roger.pau@citrix.com X-Msg-Ref: server-11.tower-27.messagelabs.com!1453291054!18103577!2 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: 7.35.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 9295 invoked from network); 20 Jan 2016 11:57:40 -0000 Received: from smtp02.citrix.com (HELO SMTP02.CITRIX.COM) (66.165.176.63) by server-11.tower-27.messagelabs.com with RC4-SHA encrypted SMTP; 20 Jan 2016 11:57:40 -0000 X-IronPort-AV: E=Sophos;i="5.22,320,1449532800"; d="scan'208";a="332682801" From: Roger Pau Monne To: Date: Wed, 20 Jan 2016 12:57:23 +0100 Message-ID: <1453291044-83976-5-git-send-email-roger.pau@citrix.com> X-Mailer: git-send-email 1.9.5 (Apple Git-50.3) In-Reply-To: <1453291044-83976-1-git-send-email-roger.pau@citrix.com> References: <1453291044-83976-1-git-send-email-roger.pau@citrix.com> MIME-Version: 1.0 X-DLP: MIA2 Cc: Andrew Cooper , Jan Beulich , Roger Pau Monne Subject: [Xen-devel] [PATCH v3 4/5] x86/PV: allow PV guests to have an emulated PIT X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This fixes the fallout from the HVMlite series, that removed the emulated PIT from PV(H) guests. Also, this patch forces the hardware domain to always have an emulated PIT, regardless of whether the toolstack specified one or not. Signed-off-by: Roger Pau Monné --- Cc: Jan Beulich Cc: Andrew Cooper --- Changes since v2: - Force the emulated PIT to always be enabled for the hardware domain. - Change indentation of the valid set of emulation bitmaps check. --- xen/arch/x86/domain.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c index e70c125..78df5ae 100644 --- a/xen/arch/x86/domain.c +++ b/xen/arch/x86/domain.c @@ -542,8 +542,11 @@ int arch_domain_create(struct domain *d, unsigned int domcr_flags, d->domain_id, config->emulation_flags); return -EINVAL; } - if ( config->emulation_flags != 0 && - (!is_hvm_domain(d) || config->emulation_flags != XEN_X86_EMU_ALL) ) + if ( is_hardware_domain(d) ) + config->emulation_flags |= XEN_X86_EMU_PIT; + if ( !is_hvm_domain(d) ? (config->emulation_flags != XEN_X86_EMU_PIT) : + (config->emulation_flags != XEN_X86_EMU_ALL && + config->emulation_flags != 0)) { printk(XENLOG_G_ERR "d%d: Xen does not allow %s domain creation " "with the current selection of emulators: %#x\n",