Re: [Xen-devel] swiotlb

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 13 Apr 2006, at 21:29, Ky Srinivasan wrote:

> Given that the function __sync_single() can be called in an interrupt
> context, why do we call a   potentially blocking function
> (__copy_to_user) from within this function?
Good point. Would __copy_to_user_inatomic() be safe? It avoids 
might_sleep(). We know that the page fault itself (if any) will not 
block on I/O -- we only use __copy_to_user() to safely catch the fault 
and return.
 -- Keir


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