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Re: [Xen-devel] [PATCH RFC 1/2] xen: refactor physical address space compression support into common code

>>> On 31.07.14 at 13:01, <ian.campbell@xxxxxxxxxx> wrote:
> The "pdx compression" functionality will be useful on ARM as well.
> Move the code to common code+header and introduce HAS_PDX to control when it 
> is
> built. L2_PAGETABLE_SHIFT is x86 specific, so introduce PDX_GROUP_SHIFT to
> abstract it out.
> ARM has no need for superpage compression (yet?) and lacks SUPERPAGE_SHIFT so
> those functions (spage_to_mfn et al) are not moved.
> No affect on x86 and no change for ARM (yet).
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

On the basis this is, as it looks to be, pure code motion except for the
few obvious places where other adjustments are needed:
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>

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