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[Xen-devel] expose PSE feature to HVM guests if PAE is turned on in config file


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Li, Xin B" <xin.b.li@xxxxxxxxx>
  • Date: Wed, 5 Jul 2006 16:01:44 +0800
  • Delivery-date: Wed, 05 Jul 2006 01:02:26 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcagCUGCdb8hlVgHRGesfojamh2TXA==
  • Thread-topic: expose PSE feature to HVM guests if PAE is turned on in config file

This patch expose PSE feature to HVM guests if PAE is turned on in
config file, with this change, RHEL4 IA32 SMP guest can boot.
But because we don't support 4Mbytes PSE pages, so x86_32 HVM guest can
NOT use PSE feature. However user may have "pae=1" in config file, which
causes PSE feature seen by x86_32 HVM guest, and it will then use
4Mbytes PSE pages. In this case, we will have to crash x86_32 HVM.
So when running x86_32 HVM guest, user need pay attention not to have
"pae=1" in config file.

Signed-off-by: Xin Li <xin.b.li@xxxxxxxxx>
Signed-off-by: Xiaohui Xin <xiaohui.xin@xxxxxxxxx>

Attachment: pae_pse.patch
Description: pae_pse.patch

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