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Re: [Xen-ia64-devel] PATCH resend: performance enhancements for BS2000 d

from [Alex Williamson]

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To:	Juergen Gross <juergen.gross@xxxxxxxxxxxxxxxxxxx>
Subject:	Re: [Xen-ia64-devel] PATCH resend: performance enhancements for BS2000 domU
From:	Alex Williamson <alex.williamson@xxxxxx>
Date:	Mon, 17 Sep 2007 14:59:55 -0600
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On Mon, 2007-09-17 at 08:43 +0200, Juergen Gross wrote:
> Hi,
> 
> the first version of this patch contained an error (wrong mask in vhpt flush).
> Please ignore the previous patch, this one should be okay!
> 
> This is a patch to enhance performance of BS2000 domu. I've changed the
> following:
> - enable some fast_reflects for big-endian guests
> - even in case of 4k-vhpt use page-size up to PAGE_SIZE in entries, if guest
>   inserts larger TC-entries
> - added KEY_PERMISSION_VECTOR support (reflect to guest)
> 
> BS2000 boot was about 10% faster with these changes.

   Applied.  I also added a followup patch that makes use of PAGE_MASK
and PAGE_ALIGN as Isaku suggested.  Thanks,

        Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.


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