Panic if Xen provides a memory map with 0 entries. Although this is
unlikely, it is better to catch the error at the point of seeing the map
than later on as a symptom of some other crash.
Signed-off-by: Martin Kelly <martk...@amazon.com>
---
arch/x86/xen/setup.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index af72161..29834b3 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -595,6 +595,7 @@ char * __init xen_memory_setup(void)
rc = 0;
}
BUG_ON(rc);
+ BUG_ON(memmap.nr_entries == 0);
/*
* Xen won't allow a 1:1 mapping to be created to UNUSABLE
--
2.1.1
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