Fix iopl flag when sysenter/exit are used

Change-Id: If8c12f987c3adb8f329ae163da6b2f1cb8cc772f
2014-10-31 22:40:23 +01:00 · 2014-10-31 22:40:23 +01:00 · 9393439a20
commit 9393439a20
parent 521fa314e2
1 changed files with 6 additions and 1 deletions
--- a/minix/kernel/arch/i386/mpx.S
+++ b/minix/kernel/arch/i386/mpx.S
@ -402,7 +402,12 @@ ENTRY(restore_user_context_sysenter)
 	mov	SPREG(%ebp), %ecx	/* sysexit restores ESP using ECX */
 	mov	AXREG(%ebp), %eax	/* trap return value */
 	mov	BXREG(%ebp), %ebx	/* secondary return value */
+
+        /* restore PSW */
        movl    PSWREG(%ebp), %edi      /* load desired PSW to EDI */
+        push    %edi
+        popf
+
 	sti				/* enable interrupts */
 	sysexit				/* jump to EIP in user */