Messages in this thread | | | Date | Wed, 20 Jun 2012 19:37:57 -0700 | Subject | Re: SNB PCI root information | From | Yinghai Lu <> |
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On Wed, Jun 20, 2012 at 12:34 PM, Ingo Molnar <mingo@kernel.org> wrote: >> if the vendor provide _PXM, that _PXM should be right and be >> trusted. >> >> if the vendor does not provide _PXM, we can have command line >> to input it before user can get one updated BIOS from vendor. > > So how about an incorrect _PXM, or a slightly inefficient one? > Why shouldn't it be possible for the user to override it?
Try to keep the code simple.
> > I mean, if we create a parameter space that tweaks data then why > not make it complete and allow *all* firmware data to be > (optionally) modified, from the kernel boot line?
that pxm/node for pci device should be consistent with srat table etc, so better solution is that BIOS keep them consistent.
If BIOS provide _PXM for pci device, the _PXM should have more chance to be right.
Anyway if you insist that it should cover that wrong case, let me check if it could be done simply.
Thanks
Yinghai
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