Re: Linux 2.6.31-rc4: strange change in iomem allocation

[David John]

On 07/23/2009 09:59 PM, Linus Torvalds wrote:
> 
> On Thu, 23 Jul 2009, Linus Torvalds wrote:
>> Don't worry about the new warning. 
>>
>> It is in fact _normal_ to see a number of warnings about PnP resources 
>> "could not be reserved"
> 
> In fact, I notice that you had them even before, eg:
> 
> 	system 00:00: iomem range 0x0-0x9ffff could not be reserved
> 	system 00:00: iomem range 0xe0000-0xfffff could not be reserved
> 	system 00:00: iomem range 0x100000-0x7e7fffff could not be reserved
> 
> which are about exactly the same thing - e820 RAM reservations take 
> precedence over the PnP ones.
> 
> So the only new thing is that we claim the APIC thing to that category 
> too.
> 

If the kernel knows that those ranges have already been reserved, can't
the PnP messages be suppressed? I used to think these were errors as
well (because of some BIOS misbehaviour) until I checked the code...
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