linux-kernel - Re: [PATCH 1/2] misc: Add Nitro Secure Module driver

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Message-ID: <2023092918-sulfide-stonework-f6b7@gregkh>
Date:   Fri, 29 Sep 2023 07:45:02 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Alexander Graf <graf@...zon.com>
Cc:     linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Olivia Mackall <olivia@...enic.com>,
        Petre Eftime <petre.eftime@...il.com>,
        Erdem Meydanlli <meydanli@...zon.nl>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        David Woodhouse <dwmw@...zon.co.uk>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: Re: [PATCH 1/2] misc: Add Nitro Secure Module driver

On Thu, Sep 28, 2023 at 10:46:44PM +0000, Alexander Graf wrote:
> +/* Register this as a misc driver */
> +#define NSM_DEV_NAME          "nsm"
> +#define NSM_IOCTL_MAGIC       0x0A
> +#define NSM_IO_REQUEST        _IOWR(NSM_IOCTL_MAGIC, 0, struct nsm_message)

You have an ioctl for this driver, yet no include/uapi/ file for it?
How is userspace supposed to know about this and use it?

thanks,

greg k-h