On Sat, Jul 02, 2016 at 09:23:24PM -0300, Aaron Campbell wrote:
> Per VT-d spec Section 10.4.2 ("Capability Register"), the maximum
> number of possible domains is 64K; indeed this is the maximum value
> that the cap_ndoms() macro will expand to. Since the value 65536
> will not fix in a u16, the 'did' variable must be promoted to an
> int, otherwise the test for < 65536 will always be true and the
> loop will never end.
>
> The symptom, in my case, was a hung machine during suspend.
Applied, thanks.
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