Re: [PATCH] Re: [Xen-devel] dom0 boot failure with 256G

[Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>]

Jan Beulich wrote:
> >   Trying to figure the hyp out, I notice phys addr is set as:
> >
> >   d->arch.physaddr_bitsize =
> >           fls((1UL << 32) - HYPERVISOR_COMPAT_VIRT_START(d)) - 1
> >             + (PAGE_SIZE - 2);
> >   which is set to 0x1019, totally baffling me. I'd expect it to be 32,
> >   36, or 64????????
> Of course it should be PAGE_SHIFT in here! c/s 14097 screwed this up
> - sorry, my fault.
Yup, that fixed it. Can you pl explain in couple sentences how we are getting 
at the physaddr_bitsize here?
I still don't understand why 37 is an OK size for a 32-PAE guest (i thought 36 
was max).
Thanks,
Mukesh

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