Re: [Xen-devel] [PATCH v3 03/13] xen: introduce cpumask_from_bitmap

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2013-04-25 at 15:44 +0100, Ian Campbell wrote:
> On Thu, 2013-04-25 at 15:42 +0100, Ian Campbell wrote:
> > And it really wants to act on sets of real physical cpus (hence cpumask_t)?
> 
> Actually, vcpus. Perhaps cpumask_t is the wrong datatype then?

x86 defines for_each_set_bit in terms of find_first_bit and
find_next_bit (both of which we have on ARM). Seems like we should just
carry that over?

> > It's emulating a write to a GICD (read: APIC ;-)) register which causes
> > an SGI (read: IPI) to be sent. The value you write includes an 8 bit
> > mask indicating the target processors.
> > 
> > See "[PATCH v3 04/13] xen/arm: support for guest SGI" in this series.
> > 
> > Ian
> 
> 
> 
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