1 files changed, 8 insertions, 4 deletions

diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index f525c0c21250..9a8263a153cb 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -345,6 +345,13 @@ iplstart:
         la    %r2,.Lreset              
         lhi   %r3,26
         diag  %r2,%r3,8
+        la    %r5,.Lirb
+        stsch 0(%r5)                           # check if irq is pending
+        tm    30(%r5),0x0f                     # by verifying if any of the
+        bnz   .Lwaitforirq                     # activity or status control
+        tm    31(%r5),0xff                     # bits is set in the schib
+        bz    .Lnoreset
+.Lwaitforirq:
         mvc   0x78(8),.Lrdrnewpsw              # set up IO interrupt psw
 .Lwaitrdrirq:
         lpsw  .Lrdrwaitpsw
@@ -658,10 +665,8 @@ startup:basr  %r13,0                     # get base
 #
         la     %r1,0f-.LPG1(%r13)       # set program check address
         stg    %r1,__LC_PGM_NEW_PSW+8
-        mvc    __LC_DIAG44_OPCODE(8),.Lnop-.LPG1(%r13)
         diag   0,0,0x44                 # test diag 0x44
         oi     7(%r12),32               # set diag44 flag
-        mvc    __LC_DIAG44_OPCODE(8),.Ldiag44-.LPG1(%r13)
 0:      
 
 #
@@ -702,7 +707,6 @@ startup:basr  %r13,0                     # get base
 .L4malign:.quad 0xffffffffffc00000
 .Lscan2g:.quad 0x80000000 + 0x20000 - 8 # 2GB + 128K - 8
 .Lnop:  .long  0x07000700
-.Ldiag44:.long 0x83000044
 
         .org PARMAREA-64
 .Lduct: .long 0,0,0,0,0,0,0,0
@@ -765,7 +769,7 @@ _stext:	basr  %r13,0                    # get base
 
 # check control registers
         stctg  %c0,%c15,0(%r15)
-        oi     6(%r15),0x20             # enable sigp external interrupts
+        oi     6(%r15),0x40             # enable sigp emergency signal
         oi     4(%r15),0x10             # switch on low address proctection
         lctlg  %c0,%c15,0(%r15)