Re: [Xen-devel] [PATCH] linux: Slightly improve single-page cont

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"Jan Beulich" <jbeulich@xxxxxxxxxx>

Subject:

Re: [Xen-devel] [PATCH] linux: Slightly improve single-page contiguous region creation/destruction

From:

Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>

Date:

Thu, 29 Jun 2006 14:57:14 +0100

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Thu, 29 Jun 2006 06:57:46 -0700

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On 29 Jun 2006, at 14:47, Jan Beulich wrote:

Combine TLB flush with page table update, avoiding an extra hypercall.
Especially on 32-bit PAE single page requests are quite frequent.

Signed-off-by: jbeulich@xxxxxxxxxx

Only on old Xen -- xen-unstable supports pgdirs above 4gb. So it'sunclear this is a worthwhile optimisation there.


 -- Keir


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