From nobody Wed Nov 5 22:36:54 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; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1537520298383371.307848966159; Fri, 21 Sep 2018 01:58:18 -0700 (PDT) Received: from localhost ([::1]:54596 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g3HGR-0007Vr-CJ for importer@patchew.org; Fri, 21 Sep 2018 04:58:15 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48803) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g3GhI-00069F-SQ for qemu-devel@nongnu.org; Fri, 21 Sep 2018 04:21:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g3GhI-0000HK-52 for qemu-devel@nongnu.org; Fri, 21 Sep 2018 04:21:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38456) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1g3GhG-000061-6T; Fri, 21 Sep 2018 04:21:54 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 7A38880F88; Fri, 21 Sep 2018 08:21:53 +0000 (UTC) Received: from laptop.redhat.com (ovpn-117-87.ams2.redhat.com [10.36.117.87]) by smtp.corp.redhat.com (Postfix) with ESMTP id 14A567D904; Fri, 21 Sep 2018 08:21:48 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org Date: Fri, 21 Sep 2018 10:18:18 +0200 Message-Id: <20180921081819.9203-28-eric.auger@redhat.com> In-Reply-To: <20180921081819.9203-1-eric.auger@redhat.com> References: <20180921081819.9203-1-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Fri, 21 Sep 2018 08:21:53 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [RFC v2 27/28] hw/arm/smmuv3: Init fault handling 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: yi.l.liu@intel.com, cdall@kernel.org, mst@redhat.com, jean-philippe.brucker@arm.com, peterx@redhat.com, alex.williamson@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RDMRC_1 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" We configure the kernel fault event fifo when the guest sizes the event queue. Signed-off-by: Eric Auger --- At the moment we arbitrarily cap the fifo size to 2^5 events --- hw/arm/smmuv3.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index c6dec63f07..ae27cfdfa0 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -1066,6 +1066,25 @@ static int smmuv3_cmdq_consume(SMMUv3State *s) return 0; } =20 +static int smmuv3_init_fault_queues(SMMUv3State *s) +{ + SMMUState *base =3D &s->smmu_state; + SMMUNotifierNode *node; + IOMMUConfig config; + /* TODO: today we cap the shift to 5 to avoid the kfifo to become too = big*/ + int qs =3D MIN(5, s->eventq.log2size); + + config.fault_cfg.qs =3D qs; + + QLIST_FOREACH(node, &base->notifiers_list, next) { + IOMMUMemoryRegion *iommu_mr =3D &node->sdev->iommu; + + memory_region_config_notify_iommu(iommu_mr, 0, IOMMU_NOTIFIER_INIT= _CFG, + &config); + } + return 0; +} + static MemTxResult smmu_writell(SMMUv3State *s, hwaddr offset, uint64_t data, MemTxAttrs attrs) { @@ -1089,6 +1108,7 @@ static MemTxResult smmu_writell(SMMUv3State *s, hwadd= r offset, if (s->eventq.log2size > SMMU_EVENTQS) { s->eventq.log2size =3D SMMU_EVENTQS; } + smmuv3_init_fault_queues(s); return MEMTX_OK; case A_EVENTQ_IRQ_CFG0: s->eventq_irq_cfg0 =3D data; --=20 2.17.1