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Tsirkin" , Peter Xu , Fabiano Rosas , Philippe Mathieu-Daude , David Hildenbrand , Steve Sistare Subject: [RFC V1 07/12] iommufd: change_process kernel interface Date: Sat, 20 Jul 2024 12:15:32 -0700 Message-Id: <1721502937-87102-8-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1721502937-87102-1-git-send-email-steven.sistare@oracle.com> References: <1721502937-87102-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-20_16,2024-07-18_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 bulkscore=0 phishscore=0 suspectscore=0 adultscore=0 malwarescore=0 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2407110000 definitions=main-2407200140 X-Proofpoint-ORIG-GUID: Mc3aYxEQ_c8TbSfcqTMZxaUfzh2CGVCz X-Proofpoint-GUID: Mc3aYxEQ_c8TbSfcqTMZxaUfzh2CGVCz Received-SPF: pass client-ip=205.220.177.32; envelope-from=steven.sistare@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Define IOMMU_IOAS_CHANGE_PROCESS for use by CPR. This interface is preliminary. Signed-off-by: Steve Sistare --- linux-headers/linux/iommufd.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/linux-headers/linux/iommufd.h b/linux-headers/linux/iommufd.h index 72e8f4b..568029a 100644 --- a/linux-headers/linux/iommufd.h +++ b/linux-headers/linux/iommufd.h @@ -50,6 +50,7 @@ enum { IOMMUFD_CMD_HWPT_SET_DIRTY_TRACKING, IOMMUFD_CMD_HWPT_GET_DIRTY_BITMAP, IOMMUFD_CMD_HWPT_INVALIDATE, + IOMMUFD_CMD_IOAS_CHANGE_PROCESS, }; /** @@ -692,4 +693,22 @@ struct iommu_hwpt_invalidate { __u32 __reserved; }; #define IOMMU_HWPT_INVALIDATE _IO(IOMMUFD_TYPE, IOMMUFD_CMD_HWPT_INVALIDATE) + +struct iommu_ioas_userspace_map { + __u64 addr_old; + __u64 addr_new; + __u64 size; /* bytes */ +}; + +struct iommu_ioas_change_process { + __u32 size; + __u32 flags; /* must be 0 */ + __u32 n_umap; + __u32 __reserved; /* must be 0 */ + __aligned_u64 umap; +}; + +#define IOMMU_IOAS_CHANGE_PROCESS \ + _IO(IOMMUFD_TYPE, IOMMUFD_CMD_IOAS_CHANGE_PROCESS) + #endif