svn commit: r217587 - head/sys/i386/i386

[Jung-uk Kim]

Author: jkim
Date: Wed Jan 19 17:09:07 2011
New Revision: 217587
URL: http://svn.freebsd.org/changeset/base/217587

Log:
  Fix yet another fallout from r208833.  VM86 BIOS call may cause page fault
  when FPU is in use.
  
  Reported by:	Marc UBM Bocklet (ubm dot freebsd at googlemail dot com)
  Tested by:	b. f. (bf1783 at googlemail dot com)
  MFC after:	3 days

Modified:
  head/sys/i386/i386/vm86bios.s

Modified: head/sys/i386/i386/vm86bios.s
==============================================================================
--- head/sys/i386/i386/vm86bios.s	Wed Jan 19 17:04:07 2011	(r217586)
+++ head/sys/i386/i386/vm86bios.s	Wed Jan 19 17:09:07 2011	(r217587)
@@ -73,10 +73,9 @@ ENTRY(vm86_bioscall)
 	je 	1f			/* no curproc/npxproc */
 	pushl	%edx
 	movl	TD_PCB(%ecx),%ecx
-	addl	$PCB_SAVEFPU,%ecx
-	pushl	%ecx
+	pushl	PCB_SAVEFPU(%ecx)
 	call	npxsave
-	popl	%ecx
+	addl	$4,%esp
 	popl	%edx			/* recover our pcb */
 1:
 	popfl