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authorZhenzhong Duan <zhenzhong.duan@oracle.com>2015-10-27 20:19:52 +0100
committerDavid Vrabel <david.vrabel@citrix.com>2015-11-02 18:47:38 +0100
commitabed7d0710e8f892c267932a9492ccf447674fb8 (patch)
treef245cd24450ec88d959407014d06b18761e005aa
parentx86/xen: add reschedule point when mapping foreign GFNs (diff)
downloadlinux-abed7d0710e8f892c267932a9492ccf447674fb8.tar.xz
linux-abed7d0710e8f892c267932a9492ccf447674fb8.zip
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>
-rw-r--r--arch/x86/xen/setup.c2
1 files changed, 1 insertions, 1 deletions
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);