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[Xen-devel] Any available page table entry bits in Xen??

To: Xen-devel@xxxxxxxxxxxxxxxxxxx
From: Min Lee <min.lee@xxxxxxxxxx>
Date: Sat, 18 Oct 2008 12:44:06 -0400
Cc:
Delivery-date: Sat, 18 Oct 2008 09:44:31 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Hi, I'm working on Xen 3.2.1 and

I'd like to know if there's any available bit in page table entries, onx86_32 (no pae),especially on L1 page table entry. It seems to me that all bits are usedby Xen.Xen disallows all AVAIL bits and PCD/PWT/PAT bits to their guest and usethem all?I've tried PCD/PWT/AVAIL bits but I couldn't find any availables.(didn't try PAT)

Or it was my mistake?

I'd like to know exactly what bits in page table I can safely andexclusively use in Xen..

Any available bit in page table entry or ideas?
thank you in advance!!

Min

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