7 files changed, 29 insertions, 29 deletions

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 ?
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index fc8bf5e285f6..d12cff11b4bc 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -535,8 +535,13 @@ startup:basr  %r13,0                     # get base
         lhi   %r1,0
         icm   %r1,3,.Lscpincr1-PARMAREA(%r4) # use this one if != 0
         jnz   .Lscnd
-        l     %r1,.Lscpincr2-PARMAREA+4(%r4) # otherwise use this one
+        lhi   %r1,0x800                 # otherwise report 2GB
 .Lscnd:
+        lhi   %r3,0x800                 # limit reported memory size to 2GB
+        cr    %r1,%r3
+        jl    .Lno2gb
+        lr    %r1,%r3
+.Lno2gb:
         xr    %r3,%r3                   # same logic
         ic    %r3,.Lscpa1-PARMAREA(%r4)
         chi   %r3,0x00
@@ -765,7 +770,7 @@ _stext:	basr  %r13,0                    # get base
 
 # check control registers
         stctl  %c0,%c15,0(%r15)
-        oi     2(%r15),0x20             # enable sigp external interrupts
+        oi     2(%r15),0x40             # enable sigp emergency signal
         oi     0(%r15),0x10             # switch on low address protection
         lctl   %c0,%c15,0(%r15)
 
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index f525c0c21250..10bc592c3637 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -658,10 +658,8 @@ 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 +700,6 @@ 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 +762,7 @@ _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)
 
diff --git a/arch/s390/kernel/s390_ext.c b/arch/s390/kernel/s390_ext.c
index 3bdd38ec71da..207bc511a6e3 100644
--- a/arch/s390/kernel/s390_ext.c
+++ b/arch/s390/kernel/s390_ext.c
@@ -19,7 +19,6 @@
 #include <asm/irq.h>
 
 /*
- * Simple hash strategy: index = code & 0xff;
  * ext_int_hash[index] is the start of the list for all external interrupts
  * that hash to this index. With the current set of external interrupts 
  * (0x1202 external call, 0x1004 cpu timer, 0x2401 hwc console, 0x4000
@@ -27,6 +26,11 @@
  */
 ext_int_info_t *ext_int_hash[256] = { 0, };
 
+static inline int ext_hash(__u16 code)
+{
+        return (code + (code >> 9)) & 0xff;
+}
+
 int register_external_interrupt(__u16 code, ext_int_handler_t handler)
 {
         ext_int_info_t *p;
@@ -37,7 +41,7 @@ int register_external_interrupt(__u16 code, ext_int_handler_t handler)
                 return -ENOMEM;
         p->code = code;
         p->handler = handler;
-        index = code & 0xff;
+        index = ext_hash(code);
         p->next = ext_int_hash[index];
         ext_int_hash[index] = p;
         return 0;
@@ -52,7 +56,7 @@ int register_early_external_interrupt(__u16 code, ext_int_handler_t handler,
                 return -EINVAL;
         p->code = code;
         p->handler = handler;
-        index = code & 0xff;
+        index = ext_hash(code);
         p->next = ext_int_hash[index];
         ext_int_hash[index] = p;
         return 0;
@@ -63,7 +67,7 @@ int unregister_external_interrupt(__u16 code, ext_int_handler_t handler)
         ext_int_info_t *p, *q;
         int index;
 
-        index = code & 0xff;
+        index = ext_hash(code);
         q = NULL;
         p = ext_int_hash[index];
         while (p != NULL) {
@@ -90,7 +94,7 @@ int unregister_early_external_interrupt(__u16 code, ext_int_handler_t handler,
 
         if (p == NULL || p->code != code || p->handler != handler)
                 return -EINVAL;
-        index = code & 0xff;
+        index = ext_hash(code);
         q = ext_int_hash[index];
         if (p != q) {
                 while (q != NULL) {
@@ -120,7 +124,7 @@ void do_extint(struct pt_regs *regs, unsigned short code)
                  */
                 account_ticks(regs);
         kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
-        index = code & 0xff;
+        index = ext_hash(code);
         for (p = ext_int_hash[index]; p; p = p->next) {
                 if (likely(p->code == code)) {
                         if (likely(p->handler))
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index a12183989a79..5ba5a5485da9 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -431,12 +431,6 @@ setup_lowcore(void)
                 ctl_set_bit(14, 29);
         }
 #endif
-#ifdef CONFIG_ARCH_S390X
-        if (MACHINE_HAS_DIAG44)
-                lc->diag44_opcode = 0x83000044;
-        else
-                lc->diag44_opcode = 0x07000700;
-#endif /* CONFIG_ARCH_S390X */
         set_prefix((u32)(unsigned long) lc);
 }
 
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 642572a8e334..da77f001af8d 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -375,7 +375,7 @@ static void smp_ext_bitcall(int cpu, ec_bit_sig sig)
          * Set signaling bit in lowcore of target cpu and kick it
          */
         set_bit(sig, (unsigned long *) &lowcore_ptr[cpu]->ext_call_fast);
-        while(signal_processor(cpu, sigp_external_call) == sigp_busy)
+        while(signal_processor(cpu, sigp_emergency_signal) == sigp_busy)
                 udelay(10);
 }
 
@@ -394,7 +394,7 @@ static void smp_ext_bitcall_others(ec_bit_sig sig)
                  * Set signaling bit in lowcore of target cpu and kick it
                  */
                 set_bit(sig, (unsigned long *) &lowcore_ptr[cpu]->ext_call_fast);
-                while (signal_processor(cpu, sigp_external_call) == sigp_busy)
+                while (signal_processor(cpu, sigp_emergency_signal) == sigp_busy)
                         udelay(10);
         }
 }
@@ -751,9 +751,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         unsigned int cpu;
         int i;
 
-        /* request the 0x1202 external interrupt */
-        if (register_external_interrupt(0x1202, do_ext_call_interrupt) != 0)
-                panic("Couldn't request external interrupt 0x1202");
+        /* request the 0x1201 emergency signal external interrupt */
+        if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0)
+                panic("Couldn't request external interrupt 0x1201");
         smp_check_cpus(max_cpus);
         memset(lowcore_ptr,0,sizeof(lowcore_ptr));  
         /*