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RE: [Xen-ia64-devel] [PATCH] translate_domain_pte must handle ED bit

To: "Magenheimer, Dan \(HP Labs Fort Collins\)" <dan.magenheimer@xxxxxx>, "Isaku Yamahata" <yamahata@xxxxxxxxxxxxx>, "Tian, Kevin" <kevin.tian@xxxxxxxxx>
Subject: RE: [Xen-ia64-devel] [PATCH] translate_domain_pte must handle ED bit
From: "Xu, Anthony" <anthony.xu@xxxxxxxxx>
Date: Thu, 23 Feb 2006 10:17:00 +0800
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Thread-topic: [Xen-ia64-devel] [PATCH] translate_domain_pte must handle ED bit
>FYI, I was hoping that some day we might be able to use some ignored
>bits to indicate the contiguous block size that the page belongs
>to.  E.g. even if the page is 16K, if it is part of an aligned
>contiguous block of 64K where phys==machine, the larger block size
>could be put into the TLB.  This obviously was never implemented
>(and could cause extra flushing overhead if the p2m mapping changed
>for any of the "sub pages" so may not even be advantageous).
>
>Dan

Dan,
"Contiguous" is a very interesting topic. Could you share more your
thought about this?

Thanks,
-Anthony

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