From patchwork Mon Sep 11 17:12:28 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?C=C3=A9dric_Le_Goater?= X-Patchwork-Id: 812471 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3xrZYY6DJkz9s81 for ; Tue, 12 Sep 2017 03:24:49 +1000 (AEST) Received: from localhost ([::1]:59327 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drSRz-0001bj-Qe for incoming@patchwork.ozlabs.org; Mon, 11 Sep 2017 13:24:47 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35545) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drSI7-0001eK-AN for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:14:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1drSI2-0004eM-R1 for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:14:35 -0400 Received: from 3.mo2.mail-out.ovh.net ([46.105.58.226]:57314) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1drSI2-0004di-KB for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:14:30 -0400 Received: from player770.ha.ovh.net (b6.ovh.net [213.186.33.56]) by mo2.mail-out.ovh.net (Postfix) with ESMTP id A79E4AB236 for ; Mon, 11 Sep 2017 19:14:29 +0200 (CEST) Received: from zorba.kaod.org.com (LFbn-1-2231-173.w90-76.abo.wanadoo.fr [90.76.52.173]) (Authenticated sender: clg@kaod.org) by player770.ha.ovh.net (Postfix) with ESMTPSA id 7A2F93C006C; Mon, 11 Sep 2017 19:14:22 +0200 (CEST) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: qemu-ppc@nongnu.org, qemu-devel@nongnu.org, David Gibson , Benjamin Herrenschmidt , Alexey Kardashevskiy , Alexander Graf Date: Mon, 11 Sep 2017 19:12:28 +0200 Message-Id: <20170911171235.29331-15-clg@kaod.org> X-Mailer: git-send-email 2.13.5 In-Reply-To: <20170911171235.29331-1-clg@kaod.org> References: <20170911171235.29331-1-clg@kaod.org> MIME-Version: 1.0 X-Ovh-Tracer-Id: 14156221004876188499 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeelledrgedtgdduudehucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddm X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 46.105.58.226 Subject: [Qemu-devel] [RFC PATCH v2 14/21] ppc/xive: add support for the SET_OS_PENDING command 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: =?utf-8?q?C=C3=A9dric_Le_Goater?= Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Adjusting the Interrupt Pending Buffer for the O/S would allow a CPU to process event queues of other priorities during one physical interrupt cycle. This is not currently used by the XIVE support for sPAPR in Linux but it is by the hypervisor. Signed-off-by: Cédric Le Goater --- hw/intc/spapr_xive.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index ad3ff91b13ea..ad3f03e37401 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -162,7 +162,14 @@ static bool spapr_xive_tm_is_readonly(uint8_t index) static void spapr_xive_tm_write_special(ICPState *icp, hwaddr offset, uint64_t value, unsigned size) { - /* TODO: support TM_SPC_SET_OS_PENDING */ + if (offset == TM_SPC_SET_OS_PENDING && size == 1) { + icp->tima_os[TM_IPB] |= priority_to_ipb(value & 0xff); + icp->tima_os[TM_PIPR] = ipb_to_pipr(icp->tima_os[TM_IPB]); + spapr_xive_icp_notify(icp); + } else { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: invalid TIMA write @%" + HWADDR_PRIx" size %d\n", offset, size); + } /* TODO: support TM_SPC_ACK_OS_EL */ }