Commit abed7d07 authored Oct 27, 2015 by Zhenzhong Duan Committed by David Vrabel Nov 02, 2015

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>

parent 914beb9f

arch/x86/xen/setup.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);