Re: [Xen-devel] [PATCH RFC] libxl: set 1GB MMIO hole for PVH

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, May 09, 2018 at 05:07:12PM +0100, Roger Pau Monne wrote:
> This prevents page-shattering, by being able to populate the RAM
> regions below 4GB using 1GB pages, provided the guest memory size is
> set to a multiple of a GB.
> 
> Note that there are some special and ACPI pages in the MMIO hole that
> will be populated using smaller order pages, but those shouldn't be
> accessed as often as RAM regions.
> 
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

This idea sounds fine to me.

Wei.

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