Re: [PATCH 2/5] PCI: Try to assign required+option size at first

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On Fri, Jan 13, 2012 at 03:28:29PM -0800, Yinghai Lu wrote:
> On Fri, Jan 13, 2012 at 8:39 AM, Ram Pai <linuxram@xxxxxxxxxx> wrote:
> > On Wed, Dec 07, 2011 at 12:53:01AM -0800, Yinghai Lu wrote:
> >
> >        I am worried that this approach will resurface old bug
> > https://bugzilla.kernel.org/show_bug.cgi?id=15960
> 
> will ask them to test for-pci2 branch.
> 
> >
> >        With your approach; on a system with not enough resources to satisfy
> > all the devices, when you fail to allocate 'required+optional' in the first
> > round and fall back to assigning only the 'required' resources, you can get the
> > reassignment order wrong, thus not allocate resources to devices for which the
> > BIOS had originally allocated resources, and hence end up disabling the device.
> 
> so even required can not be satisfied?

Yes. Even required cannot be satisfied fully.

RP

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