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Date:   Wed, 18 Oct 2023 10:31:23 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Saeed Mahameed <saeed@kernel.org>
Cc:     Arnd Bergmann <arnd@arndb.de>, linux-kernel@vger.kernel.org,
        Leon Romanovsky <leonro@nvidia.com>,
        Jason Gunthorpe <jgg@nvidia.com>, Jiri Pirko <jiri@nvidia.com>,
        Saeed Mahameed <saeedm@nvidia.com>
Subject: Re: [PATCH 0/5] mlx5 ConnectX diagnostic misc driver
Message-ID: <2023101858-underwire-donated-3ae9@gregkh>
References: <20231018081941.475277-1-saeed@kernel.org>
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On Wed, Oct 18, 2023 at 01:19:36AM -0700, Saeed Mahameed wrote:
> Historically a userspace program was used that accessed the PCI register
> and config space directly through /sys/bus/pci/.../XXX and could operate
> these debugging interfaces in parallel with the running driver.
> This approach is incompatible with secure boot and kernel lockdown so this
> driver provides a secure and restricted interface to that.

Why not just write a UIO driver for this hardware then?

thanks,

greg k-h