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Code Issues Releases Activity

Extend cpl workaround so that it applies when we are returning to

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user-mode as well as vm86 mode.
This commit is contained in:
Jonathan Lemon 1998-07-27 16:51:33 +00:00
parent f80a0a922c
commit a69546de82
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=37890
1 changed files with 5 additions and 3 deletions
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8
sys/i386/isa/ipl.s
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@ -36,7 +36,7 @@
*
* @(#)ipl.s
*
* $Id: ipl.s,v 1.20 1998/03/03 22:56:29 tegge Exp $
* $Id: ipl.s,v 1.21 1998/03/23 19:52:59 jlemon Exp $
*/
@ -169,9 +169,11 @@ doreti_exit:
* When the cpl problem is solved, this code can disappear.
*/
ICPL_LOCK
cmpl $0,_cpl
cmpl $0,_cpl /* cpl == 0, skip it */
je 1f
testl $PSL_VM,TF_EFLAGS(%esp)
testl $PSL_VM,TF_EFLAGS(%esp) /* going to VM86 mode? */
jne doreti_stop
testb $SEL_RPL_MASK,TRAPF_CS_OFF(%esp) /* to user mode? */
je 1f
doreti_stop:
movl $0,_cpl