Messages in this thread | | | Date | Mon, 22 Jun 2009 00:54:14 -0700 | From | "H. Peter Anvin" <> | Subject | Re: RFC: x86: cap iomem_resource to addressable physical memory |
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Pavel Machek wrote: > > Ok... and is there enough locking in there so that it is actually ok > to change mask during hotplug? (Is it okay because it is single long > and all the writers are somehow serialized by hotplug mechanism?) > Pavel
Making it a locked reference probably would be a good idea (although I personally think it will never actually matter in practice). Although on 32 bits (PAE) it can be more than one long, it doesn't matter because only the upper long can actually be modified. It does, however, complicate the actual code somewhat... I'll look at it tomorrow.
-hpa
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