From abed7d0710e8f892c267932a9492ccf447674fb8 Mon Sep 17 00:00:00 2001 From: Zhenzhong Duan Date: Tue, 27 Oct 2015 15:19:52 -0400 Subject: [PATCH] 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 Reviewed-by: Juergen Gross Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: David Vrabel --- arch/x86/xen/setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 387b60d9bd0e..d1fac0e53d57 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -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);