From nobody Tue Nov 4 07:18:11 2025 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 150515030167936.44653534287295; Mon, 11 Sep 2017 10:18:21 -0700 (PDT) Received: from localhost ([::1]:59287 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drSLk-0004fB-Q0 for importer@patchew.org; Mon, 11 Sep 2017 13:18:20 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34823) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drSH4-0000eE-Pa for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:13:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1drSGz-0003tt-TT for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:13:30 -0400 Received: from 1.mo2.mail-out.ovh.net ([46.105.63.121]:53584) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1drSGz-0003t0-MJ for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:13:25 -0400 Received: from player770.ha.ovh.net (b6.ovh.net [213.186.33.56]) by mo2.mail-out.ovh.net (Postfix) with ESMTP id B9789AB108 for ; Mon, 11 Sep 2017 19:13:24 +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 86D183C006E; Mon, 11 Sep 2017 19:13:17 +0200 (CEST) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-ppc@nongnu.org, qemu-devel@nongnu.org, David Gibson , Benjamin Herrenschmidt , Alexey Kardashevskiy , Alexander Graf Date: Mon, 11 Sep 2017 19:12:19 +0200 Message-Id: <20170911171235.29331-6-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: 14137925131950852947 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeelledrgedtgdduudehucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddm Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 46.105.63.121 Subject: [Qemu-devel] [RFC PATCH v2 05/21] ppc/xive: allocate IRQ numbers for the IPIs 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=20Le=20Goater?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" The number of IPIs is deduced from the max number of CPUs the guest supports and the IRQ numbers for the IPIs are allocated from the top of the IRQ number space to reduce conflict with other IRQ numbers allocated by the devices. Signed-off-by: C=C3=A9dric Le Goater --- hw/intc/spapr_xive.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index 1681affb0848..52c32f588d6d 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -58,6 +58,7 @@ static void spapr_xive_realize(DeviceState *dev, Error **= errp) sPAPRXive *xive =3D SPAPR_XIVE(dev); Object *obj; Error *err =3D NULL; + int i; =20 if (!xive->nr_targets) { error_setg(errp, "Number of interrupt targets needs to be greater = 0"); @@ -80,6 +81,11 @@ static void spapr_xive_realize(DeviceState *dev, Error *= *errp) =20 xive->ics =3D ICS_BASE(obj); =20 + /* Allocate the last IRQ numbers for the IPIs */ + for (i =3D xive->nr_irqs - xive->nr_targets; i < xive->nr_irqs; i++) { + ics_set_irq_type(xive->ics, i, false); + } + /* Allocate SBEs (State Bit Entry). 2 bits, so 4 entries per byte */ xive->sbe_size =3D DIV_ROUND_UP(xive->nr_irqs, 4); xive->sbe =3D g_malloc0(xive->sbe_size); --=20 2.13.5