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

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).


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