[S390] noexec protection

[safe/jmp/linux-2.6] / include / asm-s390 / tlbflush.h

diff --git a/include/asm-s390/tlbflush.h b/include/asm-s390/tlbflush.h
index fa4dc91..66793f5 100644 (file)
--- a/include/asm-s390/tlbflush.h
+++ b/include/asm-s390/tlbflush.h
@@ -3,6 +3,7 @@
 
 #include <linux/mm.h>
 #include <asm/processor.h>
+#include <asm/pgalloc.h>
 
 /*
  * TLB flushing:
@@ -102,6 +103,14 @@ static inline void __flush_tlb_mm(struct mm_struct * mm)
        if (unlikely(cpus_empty(mm->cpu_vm_mask)))
                return;
        if (MACHINE_HAS_IDTE) {
+               pgd_t *shadow_pgd = get_shadow_pgd(mm->pgd);
+
+               if (shadow_pgd) {
+                       asm volatile(
+                               "       .insn   rrf,0xb98e0000,0,%0,%1,0"
+                               : : "a" (2048),
+                               "a" (__pa(shadow_pgd) & PAGE_MASK) : "cc" );
+               }
                asm volatile(
                        "       .insn   rrf,0xb98e0000,0,%0,%1,0"
                        : : "a" (2048), "a" (__pa(mm->pgd)&PAGE_MASK) : "cc");