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[Xen-devel] [RESEND][PATCH 3/5]MTRR/PAT virtualization
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| Subject: | [Xen-devel] [RESEND][PATCH 3/5]MTRR/PAT virtualization |
| From: | "Su, Disheng" <disheng.su@xxxxxxxxx> |
| Date: | Wed, 17 Oct 2007 16:45:22 +0800 |
| Delivery-date: | Wed, 17 Oct 2007 01:49:10 -0700 |
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| Thread-topic: | [RESEND][PATCH 3/5]MTRR/PAT virtualization |
basic MTRR/PAT virtualization.
The basic idea is listed below:
The guest page attribute is virtualized through shadow page
attribute. First, get the effective guest page attribute, by calculating
from the combination of guest MTRR/PAT. Then the shadow page attribute
is calculated from effective guest page attribute and host MTRR. If
conflict occurs(e.g effective guest page attribute is WB, host MTRR of
this range is UC, can't set this page attribute as guest required), set
this range as UC. Some lookup tables are added to accelerate above
procedure.
Signed-off-by: Disheng Su <disheng.su@xxxxxxxxx>
Best Regards,
Disheng, Su
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