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[209.51.188.17]) by mx.google.com with ESMTPS id x6si1359381ybt.238.2020.09.01.07.35.50 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 01 Sep 2020 07:35:50 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=fail header.i=@redhat.com header.s=mimecast20190719 header.b=AxCuMe9b; spf=pass (google.com: domain of qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from localhost ([::1]:43626 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kD7O1-00008Y-Rv for alex.bennee@linaro.org; Tue, 01 Sep 2020 10:35:49 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59690) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kD7Fz-0000Qz-Qc for qemu-devel@nongnu.org; Tue, 01 Sep 2020 10:27:32 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:57723 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kD7Fu-00060F-OG for qemu-devel@nongnu.org; Tue, 01 Sep 2020 10:27:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1598970446; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=fQ7gM6y1gcLsHXYqZ+zI+fq6XdIAEyllyqNlYFN3PJ0=; b=AxCuMe9btQGKjl9+PeiMf8bIYKqYZpLJSwZjdlra3sa5cvB47LJaHhFMaZA8zifTaAS6sr NsIYSj39Cpd6cufNPB3m/tb8Yz6z4nkvttoZjROaxQ4SaCvRguNH8iBmtLWGOHY6WkRQNm l1R4vKsiKCTb0TEMCw60ymPE8LA9Ljc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-112-8wRCeS46P0Gsat5eqtHkBA-1; Tue, 01 Sep 2020 10:27:24 -0400 X-MC-Unique: 8wRCeS46P0Gsat5eqtHkBA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6A4718015C5; Tue, 1 Sep 2020 14:27:22 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-114-76.ams2.redhat.com [10.36.114.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id B568961177; Tue, 1 Sep 2020 14:27:12 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: Peter Xu , qemu-devel@nongnu.org Subject: [RFC v8 5/5] memory: Skip bad range assertion if notifier is DEVIOTLB type Date: Tue, 1 Sep 2020 16:26:08 +0200 Message-Id: <20200901142608.24481-6-eperezma@redhat.com> In-Reply-To: <20200901142608.24481-1-eperezma@redhat.com> References: <20200901142608.24481-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=205.139.110.61; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/01 10:16:33 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Aleksandar Rikalo , Yan Zhao , Eduardo Habkost , "Michael S. Tsirkin" , qemu-ppc@nongnu.org, Jason Wang , Juan Quintela , Eric Auger , qemu-arm@nongnu.org, =?UTF-8?q?Herv=C3=A9=20Poussineau?= , Avi Kivity , Paolo Bonzini , Richard Henderson , David Gibson Errors-To: qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org Sender: "Qemu-devel" X-TUID: TixmLlRt+Xve Signed-off-by: Eugenio Pérez --- softmmu/memory.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/softmmu/memory.c b/softmmu/memory.c index 09b3443eac..3ee99b4dc0 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1895,6 +1895,7 @@ void memory_region_notify_iommu_one(IOMMUNotifier *notifier, { IOMMUTLBEntry *entry = &event->entry; hwaddr entry_end = entry->iova + entry->addr_mask; + IOMMUTLBEntry tmp = *entry; /* * Skip the notification if the notification does not overlap @@ -1904,10 +1905,18 @@ void memory_region_notify_iommu_one(IOMMUNotifier *notifier, return; } - assert(entry->iova >= notifier->start && entry_end <= notifier->end); + if (notifier->notifier_flags & IOMMU_NOTIFIER_DEVIOTLB) { + /* Crop (iova, addr_mask) to range */ + tmp.iova = MAX(tmp.iova, notifier->start); + tmp.addr_mask = MIN(entry_end, notifier->end) - tmp.iova; + /* Confirm no underflow */ + assert(MIN(entry_end, notifier->end) >= tmp.iova); + } else { + assert(entry->iova >= notifier->start && entry_end <= notifier->end); + } if (event->type & notifier->notifier_flags) { - notifier->notify(notifier, entry); + notifier->notify(notifier, &tmp); } } -- 2.18.1