X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86%2Fxen%2Fmmu.c;h=2579e70cdd088f565b4c666edf673e3b073eadf1;hb=ce87b3d326de733c72b47662f106ee6cd699a20f;hp=d0976b87cd2cc5c554112c1a5bfa12eda24d6590;hpb=f5d36de069f4b343f64e858e7377cfc9c772c4fb;p=pandora-kernel.git

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index d0976b87cd2c..2579e70cdd08 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -805,8 +805,15 @@ void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm)
 static void drop_other_mm_ref(void *info)
 {
 	struct mm_struct *mm = info;
+	struct mm_struct *active_mm;
 
-	if (__get_cpu_var(cpu_tlbstate).active_mm == mm)
+#ifdef CONFIG_X86_64
+	active_mm = read_pda(active_mm);
+#else
+	active_mm = __get_cpu_var(cpu_tlbstate).active_mm;
+#endif
+
+	if (active_mm == mm)
 		leave_mm(smp_processor_id());
 
 	/* If this cpu still has a stale cr3 reference, then make sure