[Xen-devel][PATCH] patch to support super page (2M) with EPT

["Xin, Xiaohui" <xiaohui.xin@xxxxxxxxx>]

Attached are the patches to support super page with EPT. We only support 2M size. And shadow may still work fine with 4K pages.

The patches can be split into 3 parts. Apply order is as attached.

 

tool.diff

To allocate 2M physical contiguous memory in guest except the first 2M and the last 2M.

The first 2M covers special memory, and Xen use the last few pages in guest memory to do special things.

We let them to be 4K pages as normal.

super_page_common.patch

To modify the p2m interfaces by adding an order parameter, such as guest_physmap_add_page(), p2m_set_entry(), etc.

p2m-ept-file.patch

            To handle the EPT tables to support super page.           

 

 

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

Signed-off-by: Li Xin, B <xin.b.li@xxxxxxxxx>

 

 

 

Attachment: tool.diff
Description: tool.diff

Attachment: super_page_common.patch
Description: super_page_common.patch

Attachment: p2m-ept-file.patch
Description: p2m-ept-file.patch

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