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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 8 Jan 2019 17:33:41 -0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x08HXea75374362 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 8 Jan 2019 17:33:40 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E4C8A4C046; Tue, 8 Jan 2019 17:33:39 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 931664C040; Tue, 8 Jan 2019 17:33:39 +0000 (GMT) Received: from morel-ThinkPad-W530.boeblingen.de.ibm.com (unknown [9.152.224.140]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 8 Jan 2019 17:33:39 +0000 (GMT) From: Pierre Morel To: walling@linux.ibm.com Date: Tue, 8 Jan 2019 18:33:39 +0100 X-Mailer: git-send-email 2.7.4 X-TM-AS-GCONF: 00 x-cbid: 19010817-0028-0000-0000-00000336113B X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19010817-0029-0000-0000-000023F31F5F Message-Id: <1546968819-8166-1-git-send-email-pmorel@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-01-08_09:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901080141 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH] s390x/pci: Set the iommu region size as guest wants 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: thuth@redhat.com, david@redhat.com, cohuck@redhat.com, qemu-devel@nongnu.org, pasic@linux.ibm.com, borntraeger@de.ibm.com, qemu-s390x@nongnu.org, rth@twiddle.net Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The size of the accessible iommu memory region in the guest is calculated by the gues as: (PCI Address Limit) - (PCI Base Address) + 1. Let's use this value to limit the IOMMU region size. Signed-off-by: Pierre Morel --- hw/s390x/s390-pci-bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c index 69e0671..e97696a 100644 --- a/hw/s390x/s390-pci-bus.c +++ b/hw/s390x/s390-pci-bus.c @@ -660,7 +660,7 @@ void s390_pci_iommu_enable(S390PCIIOMMU *iommu) char *name =3D g_strdup_printf("iommu-s390-%04x", iommu->pbdev->uid); memory_region_init_iommu(&iommu->iommu_mr, sizeof(iommu->iommu_mr), TYPE_S390_IOMMU_MEMORY_REGION, OBJECT(&iommu-= >mr), - name, iommu->pal + 1); + name, iommu->pal - iommu->pba + 1); iommu->enabled =3D true; memory_region_add_subregion(&iommu->mr, 0, MEMORY_REGION(&iommu->iommu= _mr)); g_free(name); --=20 2.7.4