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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 9 Jan 2019 12:41:58 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x09CfuXv34734272 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 9 Jan 2019 12:41:56 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BAAD0A4053; Wed, 9 Jan 2019 12:41:56 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6E978A4040; Wed, 9 Jan 2019 12:41:56 +0000 (GMT) Received: from morel-ThinkPad-W530.boeblingen.de.ibm.com (unknown [9.152.224.140]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 9 Jan 2019 12:41:56 +0000 (GMT) From: Pierre Morel To: alex.williamson@redhat.com Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, walling@linux.ibm.com, cohuck@redhat.com, david@redhat.com, pasic@linux.ibm.com, thuth@redhat.com Subject: [PATCH v1 1/2] vfio:iommu: Use capabilities do report IOMMU informations Date: Wed, 9 Jan 2019 13:41:53 +0100 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1547037714-21592-1-git-send-email-pmorel@linux.ibm.com> References: <1547037714-21592-1-git-send-email-pmorel@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19010912-0016-0000-0000-000002428078 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19010912-0017-0000-0000-0000329C99AE Message-Id: <1547037714-21592-2-git-send-email-pmorel@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-01-09_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=780 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901090106 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We add a new flag, VFIO_IOMMU_INFO_CAPABILITIES, inside the vfio_iommu_type1_info to specify the support for capabilities. We add a new capability, with id VFIO_IOMMU_INFO_CAP_DMA in the capability list of the VFIO_IOMMU_GET_INFO ioctl. Signed-off-by: Pierre Morel --- include/uapi/linux/vfio.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index 8131028..54c4fcb 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -669,6 +669,15 @@ struct vfio_iommu_type1_info { __u32 flags; #define VFIO_IOMMU_INFO_PGSIZES (1 << 0) /* supported page sizes info */ __u64 iova_pgsizes; /* Bitmap of supported page sizes */ +#define VFIO_IOMMU_INFO_CAPABILITIES (1 << 1) /* support capabilities info */ + __u64 cap_offset; /* Offset within info struct of first cap */ +}; + +#define VFIO_IOMMU_INFO_CAP_DMA 1 +struct vfio_iommu_cap_dma { + struct vfio_info_cap_header header; + __u64 dma_start; + __u64 dma_end; }; #define VFIO_IOMMU_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) -- 2.7.4