[Xen-devel] Re: [PATCH][1/4] Enable 1GB for Xen HVM host page

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

What's the performance gain from 1GB mappings in HAP tables like? What about
just the (possible) extra 1GB mapping from this particular patch? Is it
worth making guest-visible efforts like this (admittedly small) one? After
all, the probably most frequently accessed 1GB starting at address 0x0
cannot be done with a 1GB mapping and we live with it.

 -- Keir

On 22/02/2010 17:17, "Wei Huang" <wei.huang2@xxxxxxx> wrote:

> To support 1GB host page, this patch changes the MMIO starting address
> to 1GB boundary.
> 
> Signed-off-by: Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
> Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>
> 



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