On Thu, 2012-07-19 at 09:42 -0500, Seth Jennings wrote:
> This patch adds the driver for interacting with the 842
> compression accelerator on IBM Power7+ systems.
...
> +struct nx842_slentry {
> + unsigned long ptr; /* Absolute address (use virt_to_abs()) */
> /+ unsigned long len;
> +};
These days virt_to_abs() is just __pa() - ie. convert to a real address.
So you should just use __pa().
And you also need to be certain that you only call it on addresses where
that makes sense, ie. not vmalloc etc.
cheers
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