xen: make sure xen_max_p2m_pfn is up to date
Keep xen_max_p2m_pfn up to date with the end of the extra memory
we're adding. It is possible that it will be too high since memory
may be truncated by a "mem=" option on the kernel command line, but
that won't matter.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 6c9039e..cad2fcd 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -64,6 +64,8 @@
"XEN EXTRA");
xen_extra_mem_size += size;
+
+ xen_max_p2m_pfn = PFN_DOWN(xen_extra_mem_start + xen_extra_mem_size);
}
static unsigned long __init xen_release_chunk(phys_addr_t start_addr,