diff options
| author | Gordon Willem Klok <gwk@cvs.openbsd.org> | 2006-12-11 23:45:14 +0000 |
|---|---|---|
| committer | Gordon Willem Klok <gwk@cvs.openbsd.org> | 2006-12-11 23:45:14 +0000 |
| commit | f04168c480f134c1923cf8f1b9eb7613880b49b6 (patch) | |
| tree | 595829b7ed0da68f4547b6b57edb89a4c44cbba1 | |
| parent | cf929c02811af8d243e0c74b977fa23bef9c0449 (diff) | |
Ensure kvm86_call actually saves the curpcb instead of junk. Error
introduced by myself at h2k6, thanks mickey@ and toby@ for turning me in
the direction of a corrupt PCB.
| -rw-r--r-- | sys/arch/i386/i386/kvm86call.S | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sys/arch/i386/i386/kvm86call.S b/sys/arch/i386/i386/kvm86call.S index 0f022e852e5..de48f15ef8a 100644 --- a/sys/arch/i386/i386/kvm86call.S +++ b/sys/arch/i386/i386/kvm86call.S @@ -1,4 +1,4 @@ -/* $OpenBSD: kvm86call.S,v 1.3 2006/11/30 00:05:40 gwk Exp $ */ +/* $OpenBSD: kvm86call.S,v 1.4 2006/12/11 23:45:13 gwk Exp $ */ /* $NetBSD: kvm86call.S,v 1.7 2006/04/11 17:14:07 drochner Exp $ */ /*- @@ -88,9 +88,11 @@ ENTRY(kvm86_call) leal _C_LABEL(cpu_info_primary),%ecx #endif - pushl %eax - movl vm86pcb,%eax - movl %eax,CPU_INFO_CURPCB(%ecx) + movl CPU_INFO_CURPCB(%ecx),%eax + pushl %eax /* save curpcb */ + + movl vm86pcb,%eax + movl %eax,CPU_INFO_CURPCB(%ecx) /* set curpcb to vm86pcb */ movl CPU_INFO_CURPROC(%ecx),%ecx movl P_MD_TSS_SEL(%ecx),%edi |