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[S390] load user asce on sie_fault

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On sie_fault we need to switch back to user ASCE. Otherwise we get
interresting effects when exiting to "userspace" while the guest
space is still active.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Carsten Otte 2011-10-30 15:16:59 +01:00 committed by Martin Schwidefsky
parent d98e19ccef
commit 69ba974366
1 changed files with 1 additions and 0 deletions
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arch/s390/kernel/entry64.S
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@ -1081,6 +1081,7 @@ sie_exit:
lghi %r2,0
br %r14
sie_fault:
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
lg %r14,__LC_THREAD_INFO # pointer thread_info struct
ni __TI_flags+6(%r14),255-(_TIF_SIE>>8)
lg %r14,__SF_EMPTY+8(%r15) # load guest register save area