[S390] eliminate ipl_device from lowcore

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

5 files changed, 2 insertions, 10 deletions

diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index ad543c11826d..5b18035c1dc7 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -80,7 +80,6 @@
 #define __LC_USER_ASCE                  0xC50
 #define __LC_PANIC_STACK                0xC54
 #define __LC_CPUID                      0xC60
-#define __LC_IPLDEV                     0xC7C
 #define __LC_CURRENT                    0xC90
 #define __LC_INT_CLOCK                  0xC98
 #else /* __s390x__ */
@@ -101,7 +100,6 @@
 #define __LC_USER_ASCE                  0xD60
 #define __LC_PANIC_STACK                0xD68
 #define __LC_CPUID                      0xD80
-#define __LC_IPLDEV                     0xDB8
 #define __LC_CURRENT                    0xDD8
 #define __LC_INT_CLOCK                  0xDE8
 #define __LC_VDSO_PER_CPU               0xE38
@@ -273,8 +271,7 @@ struct _lowcore
         /* entry.S sensitive area start */
         cpuid_t      cpu_id;                   /* 0xc60 */
         __u32        cpu_nr;                   /* 0xc68 */
-        __u32        ipl_device;               /* 0xc6c */
-        __u8         pad_0xc70[0xc80-0xc70];   /* 0xc70 */
+        __u8         pad_0xc6c[0xc80-0xc6c];   /* 0xc6c */
         /* entry.S sensitive area end */
 
         /* SMP info area: defined by DJB */
@@ -368,8 +365,7 @@ struct _lowcore
         /* entry.S sensitive area start */
         cpuid_t      cpu_id;                   /* 0xd80 */
         __u32        cpu_nr;                   /* 0xd88 */
-        __u32        ipl_device;               /* 0xd8c */
-        __u8         pad_0xd90[0xdc0-0xd90];   /* 0xd90 */
+        __u8         pad_0xd8c[0xdc0-0xd8c];   /* 0xd8c */
         /* entry.S sensitive area end */
 
         /* SMP info area: defined by DJB */
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index db476d114caa..2ced846065b7 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -20,7 +20,6 @@ startup_continue:
         lctl    %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
         l       %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
                                         # move IPL device to lowcore
-        mvc     __LC_IPLDEV(4),IPL_DEVICE-PARMAREA(%r12)
 #
 # Setup stack
 #
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index f9f70aa15244..65667b2e65ce 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -86,7 +86,6 @@ startup_continue:
         lctlg   %c0,%c15,.Lctl-.LPG1(%r13)      # load control registers
         lg      %r12,.Lparmaddr-.LPG1(%r13)     # pointer to parameter area
                                         # move IPL device to lowcore
-        mvc     __LC_IPLDEV(4),IPL_DEVICE+4-PARMAREA(%r12)
         lghi    %r0,__LC_PASTE
         stg     %r0,__LC_VDSO_PER_CPU
 #
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 9c8853f21bb2..91551ef1d67e 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -419,7 +419,6 @@ setup_lowcore(void)
                 PSW_ADDR_AMODE | (unsigned long) mcck_int_handler;
         lc->io_new_psw.mask = psw_kernel_bits;
         lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler;
-        lc->ipl_device = S390_lowcore.ipl_device;
         lc->clock_comparator = -1ULL;
         lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE;
         lc->async_stack = (unsigned long)
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index b167f74d94cd..775885772ff1 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -566,7 +566,6 @@ int __cpuinit __cpu_up(unsigned int cpu)
         cpu_lowcore->current_task = (unsigned long) idle;
         cpu_lowcore->cpu_nr = cpu;
         cpu_lowcore->kernel_asce = S390_lowcore.kernel_asce;
-        cpu_lowcore->ipl_device = S390_lowcore.ipl_device;
         eieio();
 
         while (signal_processor(cpu, sigp_restart) == sigp_busy)