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[Xen-devel] MTRR issue introduced by c/s 17404


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Han, Weidong" <weidong.han@xxxxxxxxx>
  • Date: Thu, 10 Apr 2008 16:33:41 +0800
  • Cc: "Su, Disheng" <disheng.su@xxxxxxxxx>
  • Delivery-date: Thu, 10 Apr 2008 01:35:31 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acia5ZUvVTcK+vvBSNK5ac0sZHCJsg==
  • Thread-topic: [Xen-devel] MTRR issue introduced by c/s 17404

Due to c/s 17404 reserves one more special page in build_e820map(), MTRR
can't cover all memory ranges. In order to fix it, need to do relevant
changing in setup_var_mtrrs() which uses magic number to caculate size.
It's the second time this issue occurs. It's better to get rid the magic
number. Thanks!

Randy (Weidong) 

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