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xen: fix the check of e_pfn in xen_find_pfn_range 

On some NUMA system, after dom0 up, we see below warning even if there are
enough pfn ranges that could be used for remapping:
"Unable to find available pfn range, not remapping identity pages"

Fix it to avoid getting a memory region of zero size in xen_find_pfn_range.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
This commit is contained in:
Zhenzhong Duan 2015-10-27 15:19:52 -04:00 committed by David Vrabel
parent 914beb9fc2
commit abed7d0710
1 changed files with 1 additions and 1 deletions
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2
arch/x86/xen/setup.c
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@ -212,7 +212,7 @@ static unsigned long __init xen_find_pfn_range(unsigned long *min_pfn)
e_pfn = PFN_DOWN(entry->addr + entry->size);
/* We only care about E820 after this */
if (e_pfn < *min_pfn)
if (e_pfn <= *min_pfn)
continue;
s_pfn = PFN_UP(entry->addr);