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Re: [Xen-devel] about grant table


  • To: "Daniel Stodden" <stodden@xxxxxxxxxx>
  • From: "ää" <yusunn@xxxxxxxxx>
  • Date: Wed, 5 Mar 2008 01:42:09 +0800
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 04 Mar 2008 09:42:34 -0800
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Thanks . I think I got it : guest OS communicates the grant info with
Xen by the "shared" array . When the granted domain wants to access
the shared page , it asks Xen to map into its address space , here is
the "active" array come into being , right ?

2008/3/5, Daniel Stodden <stodden@xxxxxxxxxx>:
>
>  On Wed, 2008-03-05 at 00:37 +0800, ää wrote:
>  > > not sure what you mean. grant transfer? certainly not. control transfer?
>  > >  also not.
>  > I mean grant table transfer hypercall , because there I find the share
>  > entry's frame get updated .
>
>
> For a transfer: yes. After all, the granting domain needs to know the
>  replaced frame number.
>
>
>  --
>  Daniel Stodden
>  LRR     -      Lehrstuhl fÃr Rechnertechnik und Rechnerorganisation
>  Institut fÃr Informatik der TU MÃnchen             D-85748 Garching
>  http://www.lrr.in.tum.de/~stodden         mailto:stodden@xxxxxxxxxx
>  PGP Fingerprint: F5A4 1575 4C56 E26A 0B33  3D80 457E 82AE B0D8 735B
>
>
>
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