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xen-devel
[Xen-devel] Re: [patch 07/26] Xen-paravirt_ops: Allow paravirt backend t
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To: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Subject: |
[Xen-devel] Re: [patch 07/26] Xen-paravirt_ops: Allow paravirt backend to choose kernel PMD sharing |
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From: |
Ingo Molnar <mingo@xxxxxxx> |
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Date: |
Fri, 16 Mar 2007 10:31:19 +0100 |
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Cc: |
Zachary Amsden <zach@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxx, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, William Lee Irwin III <wli@xxxxxxxxxxxxxx>, Chris Wright <chrisw@xxxxxxxxxxxx>, Andi Kleen <ak@xxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> |
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Fri, 16 Mar 2007 02:31:18 -0700 |
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* Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
> Normally when running in PAE mode, the 4th PMD maps the kernel address
> space, which can be shared among all processes (since they all need
> the same kernel mappings.
>
> Xen, however, does not allow guests to have the kernel pmd shared
> between page tables, so parameterize pgtable.c to allow both modes of
> operation.
Acked-by: Ingo Molnar <mingo@xxxxxxx>
Ingo
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