[Xen-devel] [PATCH] fix rounding issue in init_boot_pages

[Matt Chapman <matthewc@xxxxxx>]

Hi,

The following patch fixes an issue in init_boot_pages that
we hit on certain ia64 machines.  If the supplied range lies
within a single page, pe - ps becomes negative, because pe
is rounded downwards and ps upwards.

(One alternative might be to mandate that callers of
init_boot_pages pass page-aligned addresses, but in that
case the rounding done in this function is redundant.)

Signed-off-by: Matthew Chapman <matthewc@xxxxxx>

Thanks,
Matt

Attachment: page_alloc.diff
Description: Text document

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