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[Xen-devel] Odd start of the day memory layout

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: Mathieu Ropert <mro@xxxxxxxxxx>
  • Date: Mon, 06 Mar 2006 12:59:25 +0100
  • Delivery-date: Mon, 06 Mar 2006 13:07:57 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>


i found myself in presence of an odd start of the day memory layout using Xen 3.0.1 testing on x86-64.

Quoting from <public/xen.h>:
" *  4. This the order of bootstrap elements in the initial virtual region:
*      a. relocated kernel image
*      b. initial ram disk              [mod_start, mod_len]
*      c. list of allocated page frames [mfn_list, nr_pages]
*      d. bootstrap page tables         [pt_base, CR3 (x86)]
*      e. start_info_t structure        [register ESI (x86)]
*      f. bootstrap stack               [register ESP (x86)]"

But when i run my domU kernel (homemade), i found myself with start_info struct BETWEEN pt_base and end of page tables (pt_base + (nr_pt_frames << PAGE_SHIFT).

Is it intended?



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