[GIT PULL] s390 patches for 2.6.28-rc6

From: Martin Schwidefsky
Date: Thu Nov 27 2008 - 05:17:18 EST

Hi Linus,

please pull from 'for-linus' branch of

git://git390.osdl.marist.edu/pub/scm/linux-2.6.git for-linus

to receive the presumably last set of updates for 2.6.28:

Christian Borntraeger (2):
[S390] fix/cleanup sched_clock
[S390] pgtable.h: Fix oops in unmap_vmas for KVM processes

Heiko Carstens (1):
[S390] Fix alignment of initial kernel stack.

Martin Schwidefsky (2):
[S390] fix system call parameter functions.
[S390] Update default configuration.

arch/s390/defconfig | 74 ++++++++++++++++++++++++++------------
arch/s390/include/asm/pgtable.h | 2 -
arch/s390/include/asm/ptrace.h | 2 +-
arch/s390/include/asm/syscall.h | 28 ++++++++------
arch/s390/kernel/asm-offsets.c | 2 +-
arch/s390/kernel/compat_signal.c | 2 +-
arch/s390/kernel/entry.S | 21 ++++++-----
arch/s390/kernel/entry64.S | 23 +++++-------
arch/s390/kernel/init_task.c | 2 +-
arch/s390/kernel/ptrace.c | 2 +-
arch/s390/kernel/signal.c | 6 ++--
arch/s390/kernel/time.c | 13 +++----
arch/s390/kernel/vmlinux.lds.S | 3 +-
13 files changed, 103 insertions(+), 77 deletions(-)

diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index 9b0bc2c..a0e748d 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.27-rc4
-# Thu Aug 21 19:43:29 2008
+# Linux kernel version: 2.6.28-rc6
+# Thu Nov 27 11:00:49 2008
#
CONFIG_SCHED_MC=y
CONFIG_MMU=y
@@ -45,6 +45,7 @@ CONFIG_LOG_BUF_SHIFT=17
CONFIG_CGROUPS=y
# CONFIG_CGROUP_DEBUG is not set
CONFIG_CGROUP_NS=y
+# CONFIG_CGROUP_FREEZER is not set
# CONFIG_CGROUP_DEVICE is not set
# CONFIG_CPUSETS is not set
CONFIG_GROUP_SCHED=y
@@ -84,6 +85,7 @@ CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
+CONFIG_AIO=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLAB=y
# CONFIG_SLUB is not set
@@ -92,16 +94,10 @@ CONFIG_SLAB=y
# CONFIG_MARKERS is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_KPROBES=y
-# CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is not set
CONFIG_KRETPROBES=y
-# CONFIG_HAVE_IOREMAP_PROT is not set
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
-# CONFIG_HAVE_ARCH_TRACEHOOK is not set
-# CONFIG_HAVE_DMA_ATTRS is not set
-# CONFIG_USE_GENERIC_SMP_HELPERS is not set
-# CONFIG_HAVE_CLK is not set
-CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
@@ -135,6 +131,7 @@ CONFIG_DEFAULT_DEADLINE=y
CONFIG_DEFAULT_IOSCHED="deadline"
CONFIG_PREEMPT_NOTIFIERS=y
CONFIG_CLASSIC_RCU=y
+# CONFIG_FREEZER is not set

#
# Base setup
@@ -189,7 +186,6 @@ CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
-# CONFIG_SPARSEMEM_STATIC is not set
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_VMEMMAP=y
@@ -200,9 +196,11 @@ CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_MIGRATION=y
CONFIG_RESOURCES_64BIT=y
+CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
+CONFIG_UNEVICTABLE_LRU=y

#
# I/O subsystem configuration
@@ -220,6 +218,8 @@ CONFIG_IPL=y
CONFIG_IPL_VM=y
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_HAVE_AOUT is not set
CONFIG_BINFMT_MISC=m
CONFIG_FORCE_MAX_ZONEORDER=9
# CONFIG_PROCESS_DEBUG is not set
@@ -255,7 +255,7 @@ CONFIG_XFRM=y
# CONFIG_XFRM_STATISTICS is not set
CONFIG_NET_KEY=y
# CONFIG_NET_KEY_MIGRATE is not set
-CONFIG_IUCV=m
+CONFIG_IUCV=y
CONFIG_AFIUCV=m
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
@@ -282,7 +282,6 @@ CONFIG_INET_TCP_DIAG=y
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
-# CONFIG_IP_VS is not set
CONFIG_IPV6=y
# CONFIG_IPV6_PRIVACY is not set
# CONFIG_IPV6_ROUTER_PREF is not set
@@ -331,10 +330,12 @@ CONFIG_NF_CONNTRACK=m
# CONFIG_NF_CONNTRACK_TFTP is not set
# CONFIG_NF_CT_NETLINK is not set
# CONFIG_NETFILTER_XTABLES is not set
+# CONFIG_IP_VS is not set

#
# IP: Netfilter Configuration
#
+# CONFIG_NF_DEFRAG_IPV4 is not set
# CONFIG_NF_CONNTRACK_IPV4 is not set
# CONFIG_IP_NF_QUEUE is not set
# CONFIG_IP_NF_IPTABLES is not set
@@ -374,6 +375,7 @@ CONFIG_NET_SCH_CBQ=m
# CONFIG_NET_SCH_HTB is not set
# CONFIG_NET_SCH_HFSC is not set
CONFIG_NET_SCH_PRIO=m
+CONFIG_NET_SCH_MULTIQ=y
CONFIG_NET_SCH_RED=m
CONFIG_NET_SCH_SFQ=m
CONFIG_NET_SCH_TEQL=m
@@ -406,6 +408,7 @@ CONFIG_NET_ACT_POLICE=y
CONFIG_NET_ACT_NAT=m
# CONFIG_NET_ACT_PEDIT is not set
# CONFIG_NET_ACT_SIMP is not set
+# CONFIG_NET_ACT_SKBEDIT is not set
# CONFIG_NET_CLS_IND is not set
CONFIG_NET_SCH_FIFO=y

@@ -424,6 +427,7 @@ CONFIG_CAN_BCM=m
CONFIG_CAN_VCAN=m
# CONFIG_CAN_DEBUG_DEVICES is not set
# CONFIG_AF_RXRPC is not set
+# CONFIG_PHONET is not set
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
# CONFIG_PCMCIA is not set
@@ -473,7 +477,7 @@ CONFIG_VIRTIO_BLK=m
CONFIG_MISC_DEVICES=y
# CONFIG_EEPROM_93CX6 is not set
# CONFIG_ENCLOSURE_SERVICES is not set
-# CONFIG_HAVE_IDE is not set
+# CONFIG_C2PORT is not set

#
# SCSI device support
@@ -525,6 +529,7 @@ CONFIG_SCSI_DH_EMC=m
CONFIG_SCSI_DH_ALUA=m
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
+CONFIG_MD_AUTODETECT=y
CONFIG_MD_LINEAR=m
CONFIG_MD_RAID0=m
CONFIG_MD_RAID1=m
@@ -555,6 +560,9 @@ CONFIG_NET_ETHERNET=y
# CONFIG_IBM_NEW_EMAC_RGMII is not set
# CONFIG_IBM_NEW_EMAC_TAH is not set
# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
+# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
+# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
CONFIG_NETDEV_1000=y
CONFIG_NETDEV_10000=y
# CONFIG_TR is not set
@@ -632,13 +640,12 @@ CONFIG_S390_VMUR=m
# CONFIG_THERMAL is not set
# CONFIG_THERMAL_HWMON is not set
# CONFIG_WATCHDOG is not set
-
-#
-# Sonics Silicon Backplane
-#
+# CONFIG_REGULATOR is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
CONFIG_ACCESSIBILITY=y
+# CONFIG_STAGING is not set
+CONFIG_STAGING_EXCLUDE_BUILD=y

#
# File systems
@@ -650,13 +657,14 @@ CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_XATTR=y
# CONFIG_EXT3_FS_POSIX_ACL is not set
# CONFIG_EXT3_FS_SECURITY is not set
-# CONFIG_EXT4DEV_FS is not set
+# CONFIG_EXT4_FS is not set
CONFIG_JBD=y
# CONFIG_JBD_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
+CONFIG_FILE_LOCKING=y
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
@@ -688,6 +696,7 @@ CONFIG_GENERIC_ACL=y
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
+CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
@@ -728,6 +737,7 @@ CONFIG_LOCKD_V4=y
CONFIG_EXPORTFS=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
+# CONFIG_SUNRPC_REGISTER_V4 is not set
# CONFIG_RPCSEC_GSS_KRB5 is not set
# CONFIG_RPCSEC_GSS_SPKM3 is not set
# CONFIG_SMB_FS is not set
@@ -800,12 +810,24 @@ CONFIG_DEBUG_MEMORY_INIT=y
# CONFIG_DEBUG_SG is not set
# CONFIG_FRAME_POINTER is not set
# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_RCU_CPU_STALL_DETECTOR is not set
# CONFIG_KPROBES_SANITY_TEST is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_LKDTM is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_SYSCTL_SYSCALL_CHECK=y
+
+#
+# Tracers
+#
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_PREEMPT_TRACER is not set
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_CONTEXT_SWITCH_TRACER is not set
+# CONFIG_BOOT_TRACER is not set
+# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
CONFIG_SAMPLES=y
# CONFIG_SAMPLE_KOBJECT is not set
# CONFIG_SAMPLE_KPROBES is not set
@@ -816,16 +838,19 @@ CONFIG_SAMPLES=y
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set
+# CONFIG_SECURITYFS is not set
# CONFIG_SECURITY_FILE_CAPABILITIES is not set
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
+CONFIG_CRYPTO_FIPS=y
CONFIG_CRYPTO_ALGAPI=y
-CONFIG_CRYPTO_AEAD=m
+CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_BLKCIPHER=y
-CONFIG_CRYPTO_HASH=m
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_GF128MUL=m
# CONFIG_CRYPTO_NULL is not set
@@ -877,7 +902,7 @@ CONFIG_CRYPTO_SHA1=m
#
# Ciphers
#
-# CONFIG_CRYPTO_AES is not set
+CONFIG_CRYPTO_AES=m
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_ARC4 is not set
# CONFIG_CRYPTO_BLOWFISH is not set
@@ -898,6 +923,11 @@ CONFIG_CRYPTO_SEED=m
#
# CONFIG_CRYPTO_DEFLATE is not set
CONFIG_CRYPTO_LZO=m
+
+#
+# Random Number Generation
+#
+CONFIG_CRYPTO_ANSI_CPRNG=m
CONFIG_CRYPTO_HW=y
CONFIG_ZCRYPT=m
# CONFIG_ZCRYPT_MONOLITHIC is not set
@@ -912,8 +942,6 @@ CONFIG_S390_PRNG=m
# Library routines
#
CONFIG_BITREVERSE=m
-# CONFIG_GENERIC_FIND_FIRST_BIT is not set
-# CONFIG_GENERIC_FIND_NEXT_BIT is not set
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
CONFIG_CRC_T10DIF=y
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 7fc7613..5caddd4 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -679,8 +679,6 @@ static inline void pmd_clear(pmd_t *pmd)

static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
- if (mm->context.has_pgste)
- ptep_rcp_copy(ptep);
pte_val(*ptep) = _PAGE_TYPE_EMPTY;
if (mm->context.noexec)
pte_val(ptep[PTRS_PER_PTE]) = _PAGE_TYPE_EMPTY;
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index a7226f8..fb0ca47 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -321,8 +321,8 @@ struct pt_regs
psw_t psw;
unsigned long gprs[NUM_GPRS];
unsigned long orig_gpr2;
+ unsigned short svcnr;
unsigned short ilc;
- unsigned short trap;
};
#endif

diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 6e62397..2429b87 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -17,9 +17,7 @@
static inline long syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
- if (regs->trap != __LC_SVC_OLD_PSW)
- return -1;
- return regs->gprs[2];
+ return regs->svcnr ? regs->svcnr : -1;
}

static inline void syscall_rollback(struct task_struct *task,
@@ -52,18 +50,20 @@ static inline void syscall_get_arguments(struct task_struct *task,
unsigned int i, unsigned int n,
unsigned long *args)
{
+ unsigned long mask = -1UL;
+
BUG_ON(i + n > 6);
#ifdef CONFIG_COMPAT
- if (test_tsk_thread_flag(task, TIF_31BIT)) {
- if (i + n == 6)
- args[--n] = (u32) regs->args[0];
- while (n-- > 0)
- args[n] = (u32) regs->gprs[2 + i + n];
- }
+ if (test_tsk_thread_flag(task, TIF_31BIT))
+ mask = 0xffffffff;
#endif
if (i + n == 6)
- args[--n] = regs->args[0];
- memcpy(args, &regs->gprs[2 + i], n * sizeof(args[0]));
+ args[--n] = regs->args[0] & mask;
+ while (n-- > 0)
+ if (i + n > 0)
+ args[n] = regs->gprs[2 + i + n] & mask;
+ if (i == 0)
+ args[0] = regs->orig_gpr2 & mask;
}

static inline void syscall_set_arguments(struct task_struct *task,
@@ -74,7 +74,11 @@ static inline void syscall_set_arguments(struct task_struct *task,
BUG_ON(i + n > 6);
if (i + n == 6)
regs->args[0] = args[--n];
- memcpy(&regs->gprs[2 + i], args, n * sizeof(args[0]));
+ while (n-- > 0)
+ if (i + n > 0)
+ regs->gprs[2 + i + n] = args[n];
+ if (i == 0)
+ regs->orig_gpr2 = args[0];
}

#endif /* _ASM_SYSCALL_H */
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index fa28eca..3d144e6 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -32,7 +32,7 @@ int main(void)
DEFINE(__PT_GPRS, offsetof(struct pt_regs, gprs));
DEFINE(__PT_ORIG_GPR2, offsetof(struct pt_regs, orig_gpr2));
DEFINE(__PT_ILC, offsetof(struct pt_regs, ilc));
- DEFINE(__PT_TRAP, offsetof(struct pt_regs, trap));
+ DEFINE(__PT_SVCNR, offsetof(struct pt_regs, svcnr));
DEFINE(__PT_SIZE, sizeof(struct pt_regs));
BLANK();
DEFINE(__SF_BACKCHAIN, offsetof(struct stack_frame, back_chain));
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index c7f02e7..b537cb0 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -340,7 +340,7 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs)
return err;

restore_fp_regs(&current->thread.fp_regs);
- regs->trap = -1; /* disable syscall checks */
+ regs->svcnr = 0; /* disable syscall checks */
return 0;
}

diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 08844fc..198ea18 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -46,7 +46,7 @@ SP_R14 = STACK_FRAME_OVERHEAD + __PT_GPRS + 56
SP_R15 = STACK_FRAME_OVERHEAD + __PT_GPRS + 60
SP_ORIG_R2 = STACK_FRAME_OVERHEAD + __PT_ORIG_GPR2
SP_ILC = STACK_FRAME_OVERHEAD + __PT_ILC
-SP_TRAP = STACK_FRAME_OVERHEAD + __PT_TRAP
+SP_SVCNR = STACK_FRAME_OVERHEAD + __PT_SVCNR
SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE

_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
@@ -183,11 +183,10 @@ STACK_SIZE = 1 << STACK_SHIFT
.macro CREATE_STACK_FRAME psworg,savearea
s %r15,BASED(.Lc_spsize) # make room for registers & psw
mvc SP_PSW(8,%r15),0(%r12) # move user PSW to stack
- la %r12,\psworg
st %r2,SP_ORIG_R2(%r15) # store original content of gpr 2
- icm %r12,12,__LC_SVC_ILC
+ icm %r12,3,__LC_SVC_ILC
stm %r0,%r11,SP_R0(%r15) # store gprs %r0-%r11 to kernel stack
- st %r12,SP_ILC(%r15)
+ st %r12,SP_SVCNR(%r15)
mvc SP_R12(16,%r15),\savearea # move %r12-%r15 to stack
la %r12,0
st %r12,__SF_BACKCHAIN(%r15) # clear back chain
@@ -264,16 +263,17 @@ sysc_update:
#endif
sysc_do_svc:
l %r9,__LC_THREAD_INFO # load pointer to thread_info struct
- sla %r7,2 # *4 and test for svc 0
+ ltr %r7,%r7 # test for svc 0
bnz BASED(sysc_nr_ok) # svc number > 0
# svc 0: system call number in %r1
cl %r1,BASED(.Lnr_syscalls)
bnl BASED(sysc_nr_ok)
lr %r7,%r1 # copy svc number to %r7
- sla %r7,2 # *4
sysc_nr_ok:
mvc SP_ARGS(4,%r15),SP_R7(%r15)
sysc_do_restart:
+ sth %r7,SP_SVCNR(%r15)
+ sll %r7,2 # svc number *4
l %r8,BASED(.Lsysc_table)
tm __TI_flags+3(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)
l %r8,0(%r7,%r8) # get system call addr.
@@ -376,7 +376,6 @@ sysc_notify_resume:
sysc_restart:
ni __TI_flags+3(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC
l %r7,SP_R2(%r15) # load new svc number
- sla %r7,2
mvc SP_R2(4,%r15),SP_ORIG_R2(%r15) # restore first argument
lm %r2,%r6,SP_R2(%r15) # load svc arguments
b BASED(sysc_do_restart) # restart svc
@@ -386,7 +385,8 @@ sysc_restart:
#
sysc_singlestep:
ni __TI_flags+3(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP
- mvi SP_TRAP+1(%r15),0x28 # set trap indication to pgm check
+ mvi SP_SVCNR(%r15),0xff # set trap indication to pgm check
+ mvi SP_SVCNR+1(%r15),0xff
la %r2,SP_PTREGS(%r15) # address of register-save area
l %r1,BASED(.Lhandle_per) # load adr. of per handler
la %r14,BASED(sysc_return) # load adr. of system return
@@ -407,7 +407,7 @@ sysc_tracesys:
bnl BASED(sysc_tracenogo)
l %r8,BASED(.Lsysc_table)
lr %r7,%r2
- sll %r7,2 # *4
+ sll %r7,2 # svc number *4
l %r8,0(%r7,%r8)
sysc_tracego:
lm %r3,%r6,SP_R3(%r15)
@@ -586,7 +586,8 @@ pgm_svcper:
# per was called from kernel, must be kprobes
#
kernel_per:
- mvi SP_TRAP+1(%r15),0x28 # set trap indication to pgm check
+ mvi SP_SVCNR(%r15),0xff # set trap indication to pgm check
+ mvi SP_SVCNR+1(%r15),0xff
la %r2,SP_PTREGS(%r15) # address of register-save area
l %r1,BASED(.Lhandle_per) # load adr. of per handler
la %r14,BASED(sysc_restore)# load adr. of system return
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 41aca06..89c121a 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -46,7 +46,7 @@ SP_R14 = STACK_FRAME_OVERHEAD + __PT_GPRS + 112
SP_R15 = STACK_FRAME_OVERHEAD + __PT_GPRS + 120
SP_ORIG_R2 = STACK_FRAME_OVERHEAD + __PT_ORIG_GPR2
SP_ILC = STACK_FRAME_OVERHEAD + __PT_ILC
-SP_TRAP = STACK_FRAME_OVERHEAD + __PT_TRAP
+SP_SVCNR = STACK_FRAME_OVERHEAD + __PT_SVCNR
SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE

STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
@@ -171,11 +171,10 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
.macro CREATE_STACK_FRAME psworg,savearea
aghi %r15,-SP_SIZE # make room for registers & psw
mvc SP_PSW(16,%r15),0(%r12) # move user PSW to stack
- la %r12,\psworg
stg %r2,SP_ORIG_R2(%r15) # store original content of gpr 2
- icm %r12,12,__LC_SVC_ILC
+ icm %r12,3,__LC_SVC_ILC
stmg %r0,%r11,SP_R0(%r15) # store gprs %r0-%r11 to kernel stack
- st %r12,SP_ILC(%r15)
+ st %r12,SP_SVCNR(%r15)
mvc SP_R12(32,%r15),\savearea # move %r12-%r15 to stack
la %r12,0
stg %r12,__SF_BACKCHAIN(%r15)
@@ -250,16 +249,17 @@ sysc_update:
#endif
sysc_do_svc:
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
- slag %r7,%r7,2 # *4 and test for svc 0
+ ltgr %r7,%r7 # test for svc 0
jnz sysc_nr_ok
# svc 0: system call number in %r1
cl %r1,BASED(.Lnr_syscalls)
jnl sysc_nr_ok
lgfr %r7,%r1 # clear high word in r1
- slag %r7,%r7,2 # svc 0: system call number in %r1
sysc_nr_ok:
mvc SP_ARGS(8,%r15),SP_R7(%r15)
sysc_do_restart:
+ sth %r7,SP_SVCNR(%r15)
+ sllg %r7,%r7,2 # svc number * 4
larl %r10,sys_call_table
#ifdef CONFIG_COMPAT
tm __TI_flags+5(%r9),(_TIF_31BIT>>16) # running in 31 bit mode ?
@@ -363,7 +363,6 @@ sysc_notify_resume:
sysc_restart:
ni __TI_flags+7(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC
lg %r7,SP_R2(%r15) # load new svc number
- slag %r7,%r7,2 # *4
mvc SP_R2(8,%r15),SP_ORIG_R2(%r15) # restore first argument
lmg %r2,%r6,SP_R2(%r15) # load svc arguments
j sysc_do_restart # restart svc
@@ -372,9 +371,8 @@ sysc_restart:
# _TIF_SINGLE_STEP is set, call do_single_step
#
sysc_singlestep:
- ni __TI_flags+7(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP
- lhi %r0,__LC_PGM_OLD_PSW
- sth %r0,SP_TRAP(%r15) # set trap indication to pgm check
+ ni __TI_flags+7(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP
+ xc SP_SVCNR(2,%r15),SP_SVCNR(%r15) # clear svc number
la %r2,SP_PTREGS(%r15) # address of register-save area
larl %r14,sysc_return # load adr. of system return
jg do_single_step # branch to do_sigtrap
@@ -392,7 +390,7 @@ sysc_tracesys:
lghi %r0,NR_syscalls
clgr %r0,%r2
jnh sysc_tracenogo
- slag %r7,%r2,2 # *4
+ sllg %r7,%r2,2 # svc number *4
lgf %r8,0(%r7,%r10)
sysc_tracego:
lmg %r3,%r6,SP_R3(%r15)
@@ -567,8 +565,7 @@ pgm_svcper:
# per was called from kernel, must be kprobes
#
kernel_per:
- lhi %r0,__LC_PGM_OLD_PSW
- sth %r0,SP_TRAP(%r15) # set trap indication to pgm check
+ xc SP_SVCNR(2,%r15),SP_SVCNR(%r15) # clear svc number
la %r2,SP_PTREGS(%r15) # address of register-save area
larl %r14,sysc_restore # load adr. of system ret, no work
jg do_single_step # branch to do_single_step
diff --git a/arch/s390/kernel/init_task.c b/arch/s390/kernel/init_task.c
index 7ad0039..e807168 100644
--- a/arch/s390/kernel/init_task.c
+++ b/arch/s390/kernel/init_task.c
@@ -26,7 +26,7 @@ EXPORT_SYMBOL(init_mm);
/*
* Initial thread structure.
*
- * We need to make sure that this is 8192-byte aligned due to the
+ * We need to make sure that this is THREAD_SIZE aligned due to the
* way process stacks are handled. This is done by having a special
* "init_task" linker map entry..
*/
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 1f31be1..38ff2bc 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -657,7 +657,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
* debugger stored an invalid system call number. Skip
* the system call and the system call restart handling.
*/
- regs->trap = -1;
+ regs->svcnr = 0;
ret = -1;
}

diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 4f7fc30..8e6812a 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -160,7 +160,7 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
current->thread.fp_regs.fpc &= FPC_VALID_MASK;

restore_fp_regs(&current->thread.fp_regs);
- regs->trap = -1; /* disable syscall checks */
+ regs->svcnr = 0; /* disable syscall checks */
return 0;
}

@@ -445,7 +445,7 @@ void do_signal(struct pt_regs *regs)
oldset = &current->blocked;

/* Are we from a system call? */
- if (regs->trap == __LC_SVC_OLD_PSW) {
+ if (regs->svcnr) {
continue_addr = regs->psw.addr;
restart_addr = continue_addr - regs->ilc;
retval = regs->gprs[2];
@@ -462,7 +462,7 @@ void do_signal(struct pt_regs *regs)
case -ERESTART_RESTARTBLOCK:
regs->gprs[2] = -EINTR;
}
- regs->trap = -1; /* Don't deal with this again. */
+ regs->svcnr = 0; /* Don't deal with this again. */
}

/* Get signal to deliver. When running under ptrace, at this point
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index b94e9e3..eccefbb 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -59,7 +59,7 @@

static ext_int_info_t ext_int_info_cc;
static ext_int_info_t ext_int_etr_cc;
-static u64 jiffies_timer_cc;
+static u64 sched_clock_base_cc;

static DEFINE_PER_CPU(struct clock_event_device, comparators);

@@ -68,7 +68,7 @@ static DEFINE_PER_CPU(struct clock_event_device, comparators);
*/
unsigned long long sched_clock(void)
{
- return ((get_clock_xt() - jiffies_timer_cc) * 125) >> 9;
+ return ((get_clock_xt() - sched_clock_base_cc) * 125) >> 9;
}

/*
@@ -229,13 +229,10 @@ static struct clocksource clocksource_tod = {
*/
void __init time_init(void)
{
- u64 init_timer_cc;
-
- init_timer_cc = reset_tod_clock();
- jiffies_timer_cc = init_timer_cc - jiffies_64 * CLK_TICKS_PER_JIFFY;
+ sched_clock_base_cc = reset_tod_clock();

/* set xtime */
- tod_to_timeval(init_timer_cc - TOD_UNIX_EPOCH, &xtime);
+ tod_to_timeval(sched_clock_base_cc - TOD_UNIX_EPOCH, &xtime);
set_normalized_timespec(&wall_to_monotonic,
-xtime.tv_sec, -xtime.tv_nsec);

@@ -289,7 +286,7 @@ static unsigned long long adjust_time(unsigned long long old,
delta = -delta;
adjust.offset = -ticks * (1000000 / HZ);
}
- jiffies_timer_cc += delta;
+ sched_clock_base_cc += delta;
if (adjust.offset != 0) {
printk(KERN_NOTICE "etr: time adjusted by %li micro-seconds\n",
adjust.offset);
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 607bd67..d796d05 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -2,6 +2,7 @@
* Written by Martin Schwidefsky (schwidefsky@xxxxxxxxxx)
*/

+#include <asm/thread_info.h>
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>

@@ -86,7 +87,7 @@ SECTIONS
}
_edata = .; /* End of data section */

- . = ALIGN(2 * PAGE_SIZE); /* init_task */
+ . = ALIGN(THREAD_SIZE); /* init_task */
.data.init_task : {
*(.data.init_task)
}


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