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
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