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[Xen-devel] [Patch][RFC] Super Page Patch
| To: | <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [Patch][RFC] Super Page Patch |
| From: | "Huang2, Wei" <Wei.Huang2@xxxxxxx> |
| Date: | Mon, 21 Apr 2008 16:11:29 -0500 |
| Delivery-date: | Mon, 21 Apr 2008 14:13:46 -0700 |
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| Thread-index: | Acij9ERBcjkSQDstTzOU5jm6dmp7Ww== |
| Thread-topic: | [Patch][RFC] Super Page Patch |
|
The attached file is the
super page patch which supports both 2MB and 4MB (depending on the paging
modes of hypervisor) under hardware assisted paging. The idea is to allocate
super pages when guests are being created. Whenever such requests cannot be
satisfied, it falls back to normal 4KB allocation. Also it splits large pages
into normal 4KB pages whenever necessary. This patch is applicable on the latest
xen-unstable tree.
Any comment/suggestion is
welcomed! Since it also touches a small portion of IA64 and PowerPC code, I
would appreciate the information of whether this patch breaks IA64 or PowerPC
compilation.
Thanks,
-Wei
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