From nobody Sun Feb 8 20:12:54 2026 Delivered-To: importer@patchew.org Received-SPF: temperror (zoho.com: Error in retrieving data from DNS) 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=temperror (zoho.com: Error in retrieving data from DNS) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1508773272186978.1105853341531; Mon, 23 Oct 2017 08:41:12 -0700 (PDT) Received: from localhost ([::1]:39286 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e6eqg-0006Au-Cb for importer@patchew.org; Mon, 23 Oct 2017 11:41:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57340) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e6em5-0002rO-3C for qemu-devel@nongnu.org; Mon, 23 Oct 2017 11:36:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e6em4-0004qV-Az for qemu-devel@nongnu.org; Mon, 23 Oct 2017 11:36:21 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43402) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e6elz-0004nZ-RS; Mon, 23 Oct 2017 11:36:15 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CDBF06A7CB; Mon, 23 Oct 2017 15:36:14 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-117-27.ams2.redhat.com [10.36.117.27]) by smtp.corp.redhat.com (Postfix) with ESMTP id F19C1795B0; Mon, 23 Oct 2017 15:36:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com CDBF06A7CB Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=eric.auger@redhat.com From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, peter.maydell@linaro.org, qemu-arm@nongnu.org, qemu-devel@nongnu.org, wanghaibin.wang@huawei.com Date: Mon, 23 Oct 2017 17:35:37 +0200 Message-Id: <1508772937-21054-5-git-send-email-eric.auger@redhat.com> In-Reply-To: <1508772937-21054-1-git-send-email-eric.auger@redhat.com> References: <1508772937-21054-1-git-send-email-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Mon, 23 Oct 2017 15:36:15 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [RFC v2 4/4] hw/intc/arm_gicv3_its: Implement full reset 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: wei@redhat.com, drjones@redhat.com, vijay.kilari@gmail.com, quintela@redhat.com, dgilbert@redhat.com, wu.wubin@huawei.com, christoffer.dall@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_6 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Voiding the ITS caches is not supposed to happen via individual register writes. So we introduced a dedicated ITS KVM device ioctl to perform a cold reset of the ITS: KVM_DEV_ARM_VGIC_GRP_CTRL/KVM_DEV_ARM_ITS_CTRL_RESET. Let's use this latter if the kernel supports it. Signed-off-by: Eric Auger --- hw/intc/arm_gicv3_its_kvm.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/intc/arm_gicv3_its_kvm.c b/hw/intc/arm_gicv3_its_kvm.c index 537cea1..73e2530 100644 --- a/hw/intc/arm_gicv3_its_kvm.c +++ b/hw/intc/arm_gicv3_its_kvm.c @@ -215,9 +215,19 @@ static void kvm_arm_its_post_load(GICv3ITSState *s) =20 static void kvm_arm_its_reset(DeviceState *dev) { + GICv3ITSState *s =3D ARM_GICV3_ITS_COMMON(dev); KVMARMITSClass *c =3D KVM_ARM_ITS_GET_CLASS(s); =20 c->parent_reset(dev); + + if (!kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_ITS_CTRL_RESET)) { + error_report("ITS KVM: reset is not supported by the kernel"); + return; + } + + kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_ITS_CTRL_RESET, NULL, true, &error_abort= ); } =20 static Property kvm_arm_its_props[] =3D { --=20 2.5.5