Thank you for your contribution! Sashiko AI review found 1 potential issue(s) 
to consider:
- [Medium] The `MSHV_CREATE_DEVICE` ioctl command definition is completely 
missing from the UAPI header.
--

--- Patch [2]: [PATCH v5 2/9] mshv: Add declarations and definitions for 
VFIO-MSHV bridge device ---
commit e1e53f07045678558c5d600cce2f941f492fd69b
Author: Mukesh R <[email protected]>

mshv: Add declarations and definitions for VFIO-MSHV bridge device

Add data structs needed by the subsequent patch that introduces a new
module to implement VFIO-MSHV pseudo device.

> diff --git a/include/uapi/linux/mshv.h b/include/uapi/linux/mshv.h
> index 32ff92b6342b2..be6fe3ee87078 100644
> --- a/include/uapi/linux/mshv.h
> +++ b/include/uapi/linux/mshv.h
> @@ -404,4 +404,34 @@ struct mshv_sint_mask {

[ ... ]

> +/* 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)

[Severity: Medium]
Is the definition for the MSHV_CREATE_DEVICE ioctl missing here?

The comment right above mentions device fds created with MSHV_CREATE_DEVICE,
and the patch adds struct mshv_create_device, but the actual ioctl macro
is never defined. Would this prevent userspace from compiling against the
header to use the device passthrough feature?

> +
>  #endif

-- 
Sashiko AI review ยท 
https://sashiko.dev/#/patchset/[email protected]?part=2

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