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[PATCH] s390: cpu timer reset in machine check handler 

Fix wrong move direction of timer values for cpu accounting in case of a
machine check that indicates a broken cpu timer.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Heiko Carstens 2005-07-27 11:45:06 -07:00 committed by Linus Torvalds
parent f878e43675
commit 8ffa7405af
2 changed files with 6 additions and 6 deletions
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6
arch/s390/kernel/entry.S
View File

@ -690,9 +690,9 @@ mcck_int_handler:
bo BASED(0f)
spt __LC_LAST_UPDATE_TIMER # revalidate cpu timer
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
mvc __LC_LAST_UPDATE_TIMER(8),__LC_EXIT_TIMER
mvc __LC_ASYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
mvc __LC_SYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
mvc __LC_EXIT_TIMER(8),__LC_LAST_UPDATE_TIMER
0: tm __LC_MCCK_CODE+2,0x08 # mwp of old psw valid?
bno BASED(mcck_no_vtime) # no -> skip cleanup critical
tm __LC_MCK_OLD_PSW+1,0x01 # interrupting from user ?

6
arch/s390/kernel/entry64.S
View File

@ -727,9 +727,9 @@ mcck_int_handler:
jo 0f
spt __LC_LAST_UPDATE_TIMER
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
mvc __LC_LAST_UPDATE_TIMER(8),__LC_EXIT_TIMER
mvc __LC_ASYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
mvc __LC_SYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
mvc __LC_EXIT_TIMER(8),__LC_LAST_UPDATE_TIMER
0: tm __LC_MCCK_CODE+2,0x08 # mwp of old psw valid?
jno mcck_no_vtime # no -> no timer update
tm __LC_MCK_OLD_PSW+1,0x01 # interrupting from user ?