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xen: switch extra memory accounting to use pfns

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Instead of using physical addresses for accounting of extra memory
areas available for ballooning switch to pfns as this is much less
error prone regarding partial pages.

Reported-by: Roger Pau Monné <roger.pau@citrix.com>
Tested-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
This commit is contained in:
Juergen Gross
2015-09-04 14:05:51 +02:00
committed by David Vrabel
parent cb9e444b5a
commit 626d750866
3 changed files with 49 additions and 41 deletions
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4
include/xen/page.h
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@@ -9,8 +9,8 @@ static inline unsigned long page_to_mfn(struct page *page)
}
struct xen_memory_region {
phys_addr_t start;
phys_addr_t size;
unsigned long start_pfn;
unsigned long n_pfns;
};
#define XEN_EXTRA_MEM_MAX_REGIONS 128 /* == E820MAX */