Re: [Xen-devel] 32/64-bit hypercall interface

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 3 Oct 2005, at 22:11, Hollis Blanchard wrote:

> However, doesn't that same argument apply to correcting the ABI in the 
> first
> place? Shadow page tables will overshadow the performance impact of 
> making
> the ABI 32/64-bit clean.
The cost must also be paid by domains that don't require shadow page 
tables (32-bit on 32-bit, in particular).
The 64-bit dom0_op patch you posted misses 64-bit-ifying the page-frame 
arrays of GETMEMLIST and GETPAGEFRAMEINFO2. I had a go at 64-bit-ifying 
the dom0_op interface myself, and gave up at those two because they are 
particularly invasive to change.
 -- Keir


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