From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id CA78A2BF002; Tue, 12 May 2026 02:03:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778551403; cv=none; b=cMg14dMTtv0KHVF9Q+pJTbmTL6rAPfOC9tRvpQNvT5VCJl7NLVOnhSsKLAH6Zr97KOOekAlqpwrXkfyU1zN3WkoDDe1puzuJyFUtKBSGLqXV/vsfrE91vXgrtZ1Ix1tie/Yiv49Fx7le4nKzCUMlIkVC5DUAaykHMPhB6k0VS8w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778551403; c=relaxed/simple; bh=YHqtXUsWsKUQPUARhKVhjmt+hsoEAkkNEwELJj13R4s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rwBZADYrD7PGNVygoGEACAxDdUx6a9MNP5+OoBSzgOrn/sKmX2xOVhqb8Ix9K6C7Qj/pcwV3BgNyUunCH9/L2df/E/cqzwWbWF1P6//Zt+TcJvYzvdUbfYWIH1itqaiGQKBz4r0fi75RzXMOE1p+JNJlBkHBKY1kSt9ZTg34lzs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=gz1rp8sj; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="gz1rp8sj" Received: from mrdev.corp.microsoft.com (unknown [13.88.17.9]) by linux.microsoft.com (Postfix) with ESMTPSA id 3548E20B717A; Mon, 11 May 2026 19:03:18 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 3548E20B717A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1778551399; bh=sI1uTfyi7YwzdcnjBG4TUNpa5h8tmdGMVODypA3HaLw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gz1rp8sjS0vih/Cy1h28uTb2gKzQOj37xv7arKHVjWwN1anTX8TAcTixcXtXXUll+ GGcpgVx9VSFcfuCvcayXowkqnqYdJSMv1xOqWw1nvFv9AZitG5PbC+WSqffR24aMt4 b/F+oroxSP2yDt3i5vXaQUhjOYbKfldS1HHtE9hU= From: Mukesh R To: hpa@zytor.com, robin.murphy@arm.com, robh@kernel.org, wei.liu@kernel.org, mrathor@linux.microsoft.com, mhklinux@outlook.com, muislam@microsoft.com, namjain@linux.microsoft.com, magnuskulke@linux.microsoft.com, anbelski@linux.microsoft.com, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, iommu@lists.linux.dev, linux-pci@vger.kernel.org, linux-arch@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, decui@microsoft.com, longli@microsoft.com, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, joro@8bytes.org, will@kernel.org, lpieralisi@kernel.org, kwilczynski@kernel.org, bhelgaas@google.com, arnd@arndb.de, jacob.pan@linux.microsoft.com Subject: [PATCH V3 04/11] mshv: Declarations and definitions for VFIO-MSHV bridge device Date: Mon, 11 May 2026 19:02:52 -0700 Message-ID: <20260512020259.1678627-5-mrathor@linux.microsoft.com> X-Mailer: git-send-email 2.51.2.vfs.0.1 In-Reply-To: <20260512020259.1678627-1-mrathor@linux.microsoft.com> References: <20260512020259.1678627-1-mrathor@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add data structs needed by the subsequent patch that introduces a new module to implement VFIO-MSHV pseudo device. Signed-off-by: Mukesh R --- drivers/hv/mshv_root.h | 19 +++++++++++++++++++ include/uapi/linux/mshv.h | 30 ++++++++++++++++++++++++++++++ 2 files changed, 49 insertions(+) diff --git a/drivers/hv/mshv_root.h b/drivers/hv/mshv_root.h index a85c24dcc701..b9880d0bdc4d 100644 --- a/drivers/hv/mshv_root.h +++ b/drivers/hv/mshv_root.h @@ -227,6 +227,25 @@ struct port_table_info { }; }; +struct mshv_device { + const struct mshv_device_ops *device_ops; + struct mshv_partition *device_pt; + void *device_private; + struct hlist_node device_ptnode; +}; + +struct mshv_device_ops { + const char *device_name; + long (*device_create)(struct mshv_device *dev); + void (*device_release)(struct mshv_device *dev); + long (*device_set_attr)(struct mshv_device *dev, + struct mshv_device_attr *attr); + long (*device_has_attr)(struct mshv_device *dev, + struct mshv_device_attr *attr); +}; + +extern struct mshv_device_ops mshv_vfio_device_ops; + int mshv_update_routing_table(struct mshv_partition *partition, const struct mshv_user_irq_entry *entries, unsigned int numents); diff --git a/include/uapi/linux/mshv.h b/include/uapi/linux/mshv.h index 32ff92b6342b..be6fe3ee8707 100644 --- a/include/uapi/linux/mshv.h +++ b/include/uapi/linux/mshv.h @@ -404,4 +404,34 @@ struct mshv_sint_mask { /* hv_hvcall device */ #define MSHV_HVCALL_SETUP _IOW(MSHV_IOCTL, 0x1E, struct mshv_vtl_hvcall_setup) #define MSHV_HVCALL _IOWR(MSHV_IOCTL, 0x1F, struct mshv_vtl_hvcall) + +/* Device passhthru */ +#define MSHV_CREATE_DEVICE_TEST 1 + +enum { + MSHV_DEV_TYPE_VFIO, + MSHV_DEV_TYPE_MAX, +}; + +struct mshv_create_device { + __u32 type; /* in: MSHV_DEV_TYPE_xxx */ + __u32 fd; /* out: device handle */ + __u32 flags; /* in: MSHV_CREATE_DEVICE_xxx */ +}; + +#define MSHV_DEV_VFIO_FILE 1 +#define MSHV_DEV_VFIO_FILE_ADD 1 +#define MSHV_DEV_VFIO_FILE_DEL 2 + +struct mshv_device_attr { + __u32 flags; /* no flags currently defined */ + __u32 group; /* device-defined */ + __u64 attr; /* group-defined */ + __u64 addr; /* userspace address of attr data */ +}; + +/* Device fds created with MSHV_CREATE_DEVICE */ +#define MSHV_SET_DEVICE_ATTR _IOW(MSHV_IOCTL, 0x00, struct mshv_device_attr) +#define MSHV_HAS_DEVICE_ATTR _IOW(MSHV_IOCTL, 0x01, struct mshv_device_attr) + #endif -- 2.51.2.vfs.0.1