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-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 fa0269a..90bac0a 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -227,7 +227,7 @@ char * __init xen_memory_setup(void)
memcpy(map_raw, map, sizeof(map));
e820.nr_map = 0;
- xen_extra_mem_start = mem_end;
+ xen_extra_mem_start = max((1ULL << 32), mem_end);
for (i = 0; i < memmap.nr_entries; i++) {
unsigned long long end;
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