xen/mmu: Fix for linker errors when CONFIG_SMP is not defined.

Simple enough - we use an extern defined symbol which is not
defined when CONFIG_SMP is not defined. This fixes the linker
dying.

CC: stable@kernel.org
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 673e968df3cfd6c67a1b8a9dc3885fcaad15249f..0ccccb67a99300d3cd6277cb427382bdbe3ce3a5 100644 (file)
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1232,7 +1232,11 @@ static void xen_flush_tlb_others(const struct cpumask *cpus,
 {
        struct {
                struct mmuext_op op;
+#ifdef CONFIG_SMP
                DECLARE_BITMAP(mask, num_processors);
+#else
+               DECLARE_BITMAP(mask, NR_CPUS);
+#endif
        } *args;
        struct multicall_space mcs;