Re: [Xen-devel] [RFC] Disable xen platform device when it is not needed.

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 23/02/2009 09:35, "Ian Jackson" <Ian.Jackson@xxxxxxxxxxxxx> wrote:

> Keir Fraser writes ("Re: [Xen-devel] [RFC] Disable xen platform device when it
> is not needed."):
>> On 23/02/2009 08:43, "Ian Jackson" <Ian.Jackson@xxxxxxxxxxxxx> wrote:
>>> How will this interact with the `disable qemu PCI devices in HVM
>>> domains' feature, which also uses ioport 0x10 ?
>> 
>> That feature implements WORD and DWORD ports at address 0x10, but leaves the
>> BYTE port at that address available for other uses.
> 
> Ah, err, yes.  Ugh.  Maybe a table of uses of ioports 0x10 (and 0x12!)
> would be a sensible addition to xen-unstable.hg/doc/ somewhere.

Well, byte 0x10 is available and is the first one, so it seemed to make
sense to me. ;-) The protocol on the fixed ports is already kind of ugly and
makes use of different meanings for different access sizes, so it's in the
existing spirit also. More documentation is almost always nice, so I can't
disagree with that.

 -- Keir



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