| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
RE: [Xen-devel] dom0 and apicid not equal to cpuid
> > It appears that the call to GET_APIC_ID() in
> > mp_register_lapic_address() isn't legal for dom0, but the failure
> > to make that call results in an incorrect cpu_to_apicid[] table
> > and that means the acpiid_to_apicid[] table is also wrong.
>
> The code in processor_core.c ultimately wants to convert
> acpiid to cpuid. I think we're going to be in a confusing
> mess if we set up the acpiid-apicid-cpuid relationships for
> anything other than a dom0_vcpu_pin'ed system.
Agreed. That's all I really need it for anyway.
> So perhaps we should expose that configuration option
> to dom0 (so it can tell whether it is pinned or not)...
Good idea.
> In the non-pinned case perhaps we should initialise all those
> arrays to -1 for sanity's sake.
If this had been done initially, I'd think it was a good idea,
but I'm worried about introducing that kind of change now.
> Do you think you could do the Linux side of this in a reasonably clean
> manner? You could provide a Linux kernel command-line option
> to specify pinned/not-pinned for now if you like, and I would do the
> proper plumbing through from Xen.
Sure, I'll try to get something out soon.
-Mark Langsdorf
Operating System Research Center
AMD
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home