From: Heiko Carstens <heiko.carstens@de.ibm.com> Date: Wed, 27 Jul 2005 18:45:06 +0000 (-0700) Subject: [PATCH] s390: cpu timer reset in machine check handler X-Git-Tag: firefly_0821_release~42584^2~79 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8ffa7405afe0eaf34db6254160b734f084601f68;p=firefly-linux-kernel-4.4.55.git [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> --- diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 5b262b5d869f..1a271b16cb5c 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -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 ? diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 57ca75d0ad7f..d9f22915008c 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -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 ?