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-rw-r--r--arch/s390/kernel/entry64.S9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 384e609b4711..e09dbe5f2901 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -48,6 +48,7 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
48 _TIF_MCCK_PENDING) 48 _TIF_MCCK_PENDING)
49_TIF_TRACE = (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \ 49_TIF_TRACE = (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
50 _TIF_SYSCALL_TRACEPOINT) 50 _TIF_SYSCALL_TRACEPOINT)
51_TIF_TRANSFER = (_TIF_MCCK_PENDING | _TIF_TLB_WAIT)
51 52
52#define BASED(name) name-system_call(%r13) 53#define BASED(name) name-system_call(%r13)
53 54
@@ -189,10 +190,12 @@ ENTRY(__switch_to)
189 lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4 190 lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
190 mvc __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next 191 mvc __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next
191 lg %r15,__THREAD_ksp(%r3) # load kernel stack of next 192 lg %r15,__THREAD_ksp(%r3) # load kernel stack of next
192 tm __TI_flags+7(%r4),_TIF_MCCK_PENDING # machine check pending? 193 llill %r6,_TIF_TRANSFER # transfer TIF bits
194 ng %r6,__TI_flags(%r4) # isolate TIF bits
193 jz 0f 195 jz 0f
194 ni __TI_flags+7(%r4),255-_TIF_MCCK_PENDING # clear flag in prev 196 og %r6,__TI_flags(%r5) # set TIF bits of next
195 oi __TI_flags+7(%r5),_TIF_MCCK_PENDING # set it in next 197 stg %r6,__TI_flags(%r5)
198 ni __TI_flags+7(%r4),255-_TIF_TRANSFER # clear TIF bits of prev
1960: lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task 1990: lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
197 br %r14 200 br %r14
198 201