Commit 1ea644c8 authored Oct 16, 2014 by Martin Kelly Committed by David Vrabel Oct 23, 2014

x86/xen: panic on bad Xen-provided memory map



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 <martkell@amazon.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>

parent 3251f20b

arch/x86/xen/setup.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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