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Re: [Xen-devel] Design question for PV superpage support

To: Dave McCracken <dcm@xxxxxxxx>
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Mon, 02 Mar 2009 17:32:38 -0800
Cc: Xen Developers List <xen-devel@xxxxxxxxxxxxxxxxxxx>, Mick.Jordan@xxxxxxx
Delivery-date: Mon, 02 Mar 2009 17:33:09 -0800
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Dave McCracken wrote:

No, actually, it doesn't do that. The hypervisor allocates 2M pages, thenexpands them into 4K pages for the mfn<->pfn maps, etc.

What happens if you start using MMU_MACHPHYS_UPDATE on pages which arepart of a 2M mapping?


   J

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References:
- [Xen-devel] Design question for PV superpage support
  - From: Dave McCracken
- Re: [Xen-devel] Design question for PV superpage support
  - From: Mick Jordan
- Re: [Xen-devel] Design question for PV superpage support
  - From: Mick Jordan
- Re: [Xen-devel] Design question for PV superpage support
  - From: Dave McCracken

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