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 51C25274B2A; Fri, 1 May 2026 00:42:15 +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=1777596138; cv=none; b=NRrX2vDX7wN+pDS4BAwGAEZEDruxYbpemhnXkCtFuFZet8zFBqMLmKGtkQNvInEpfUCu9xCRj79kKUS4PsnXD/ohDTGmyXv7TPik2EVtfgpp+g+PUjWOkVoPg16r9EX23IlW6sS+WE30LSmBtjN78CpB7UJlRopqhPYQk0mw43E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777596138; c=relaxed/simple; bh=i7TTD4rbc9FHgT/PqRax2hCxSF14mcjnAspWxjiAQFI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Pe7zXjx/5zoj/aU4/Ck4VCKkMj3cMPk3H4wBA+haxQGsPqASDuNCEDSPMotidhkKk7g9EtVqrCX62pfyMINZvZk4aUtQ3f/CJy+mphnNPTgVIxgl4Ph08fr+vha0MkbMrHH4m1YzO9Y3Mwm34UFWJCij3lV8EP3KlO4PfSBb0VI= 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=gZNJ3KIr; 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="gZNJ3KIr" Received: from mrdev.corp.microsoft.com (unknown [40.86.183.173]) by linux.microsoft.com (Postfix) with ESMTPSA id 0B23020B7175; Thu, 30 Apr 2026 17:42:13 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 0B23020B7175 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1777596135; bh=tidzTRCfJneaHjA+fOlX3DgM/7vG+INZY/lk1h6owmY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gZNJ3KIrHIBUNDw3xlzlRd2by6ZLmwHIEgPm19cQF0wcUqS/oWugSnF7NPun4LxIh TTiMPEgr6BWvgZ2jZ/ZF3lEdN9mJsRuSJ6xK4zS9VWC3JRBLSUJTUrzdr2KGG7fH1H 6N7NOsD1XhcBqhmiRkjqjiT5NTP2pdjaOELszUW0= 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 Subject: [PATCH V2 04/11] mshv: Declarations and definitions for VFIO-MSHV bridge device Date: Thu, 30 Apr 2026 17:41:50 -0700 Message-ID: <20260501004157.3108202-5-mrathor@linux.microsoft.com> X-Mailer: git-send-email 2.51.2.vfs.0.1 In-Reply-To: <20260501004157.3108202-1-mrathor@linux.microsoft.com> References: <20260501004157.3108202-1-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..4373a8243951 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