Re: [PATCH] MSI: check for BIOS assigned addresses

From: Ingo Molnar
Date: Fri Mar 06 2009 - 11:24:35 EST



* Daniel Yeisley <dan.yeisley@xxxxxxxxxx> wrote:

> When creating MSI addresses the kernel makes them up and
> writes them to the hardware without first checking for what
> the system BIOS may have assigned. The patch below checks for
> already assigned values, and leaves them alone if they exist.
>
> Signed-off-by: Dan Yeisley <dan.yeisley@xxxxxxxxxx>

What happens without this fix - do you get non-working cards?
Boot hang? Or a suboptimal layout?

Ingo
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