Re: [Xen-devel] [PATCHv1] xen: increase default number of PIRQs for hardware domains

[David Vrabel <david.vrabel@xxxxxxxxxx>]

On 03/12/14 20:38, Konrad Rzeszutek Wilk wrote:
> On Wed, Dec 03, 2014 at 04:04:20PM +0000, David Vrabel wrote:
>> The default limit for the number of PIRQs for hardware domains (dom0)
>> is not sufficient for some (x86) systems.
>>
>> Since the pirq structures are individually and dynamically allocated,
>> the limit for hardware domains may be increased to the number of
>> possible IRQs.
> 
> Why not also expand the number for the guest?

Because the default doesn't need to be increased for domUs at this time
and I did not want to audit the code to make sure a guest can't (for
example) repeatedly map PIRQs, using up all pirqs/irqs in Xen.

David

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