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Re: RE: [Xen-devel] Different: nr_pages vs. max_pfn

  • To: "Jayaraman, Bhaskar" <Bhaskar.Jayaraman@xxxxxxx>, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, "xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Y. D." <duyuyang@xxxxxxxxx>
  • Date: Wed, 19 Nov 2008 20:22:02 +0800
  • Cc:
  • Delivery-date: Wed, 19 Nov 2008 04:22:34 -0800
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

>The shared_info value is set up by the guest itself during boot. It's larger
>because Linux adds extra space at the end of its p2m map for backend

I tested for various memories, i.e. 64M and 128M, the extra memory is 8M 
Also, I tested the extra 8M memory is dispersed in the p2m map, not at the end 
Can we say the p2m mapping table stays put during dom's lifecycle?

Thanks, keir.


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