Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 9 insertions, 2 deletions

diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c
index 5ffb5622f793..863f8753ab0a 100644
--- a/arch/x86/kernel/vm86_32.c
+++ b/arch/x86/kernel/vm86_32.c
@@ -179,6 +179,7 @@ static void mark_screen_rdonly(struct mm_struct *mm)
         if (pud_none_or_clear_bad(pud))
                 goto out;
         pmd = pmd_offset(pud, 0xA0000);
+        split_huge_page_pmd(mm, pmd);
         if (pmd_none_or_clear_bad(pmd))
                 goto out;
         pte = pte_offset_map_lock(mm, pmd, 0xA0000, &ptl);
@@ -551,8 +552,14 @@ cannot_handle:
 int handle_vm86_trap(struct kernel_vm86_regs *regs, long error_code, int trapno)
 {
         if (VMPI.is_vm86pus) {
-                if ((trapno == 3) || (trapno == 1))
-                        return_to_32bit(regs, VM86_TRAP + (trapno << 8));
+                if ((trapno == 3) || (trapno == 1)) {
+                        KVM86->regs32->ax = VM86_TRAP + (trapno << 8);
+                        /* setting this flag forces the code in entry_32.S to
+                           call save_v86_state() and change the stack pointer
+                           to KVM86->regs32 */
+                        set_thread_flag(TIF_IRET);
+                        return 0;
+                }
                 do_int(regs, trapno, (unsigned char __user *) (regs->pt.ss << 4), SP(regs));
                 return 0;
         }