[S390] cleanup lowcore access from external interrupts
Read external interrupts parameters from the lowcore in the first
level interrupt handler in entry[64].S.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 2d205e4..e4038ea 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -727,8 +727,11 @@
ext_no_vtime:
HANDLE_SIE_INTERCEPT
TRACE_IRQS_OFF
+ lghi %r1,4096
la %r2,SP_PTREGS(%r15) # address of register-save area
- llgh %r3,__LC_EXT_INT_CODE # get interruption code
+ llgf %r3,__LC_CPU_ADDRESS # get cpu address + interruption code
+ llgf %r4,__LC_EXT_PARAMS # get external parameter
+ lg %r5,__LC_EXT_PARAMS2-4096(%r1) # get 64 bit external parameter
brasl %r14,do_extint
j io_return