linux-kernel - Re: [PATCH] vfio/pci: Sanity check IGD OpRegion Size

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Message-ID: <YJjO3n6jWYDoYPAo@infradead.org>
Date:   Mon, 10 May 2021 07:12:46 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Alex Williamson <alex.williamson@...hat.com>
Cc:     tkffaul@...look.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] vfio/pci: Sanity check IGD OpRegion Size

On Fri, May 07, 2021 at 12:53:17PM -0600, Alex Williamson wrote:
> +	/*
> +	 * The OpRegion size field is specified as size in KB, but there have been
> +	 * user reports where this field appears to report size in bytes.  If we
> +	 * read 8192, assume this is the case.
> +	 */

Please avoid pointlesly spilling the comment line over 80 chars.


> +	if (size == OPREGION_SIZE)

Shouldn't this be a range tests, i.e. >= ?