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-rw-r--r--arch/s390/kernel/compat_linux.c38
-rw-r--r--arch/s390/kernel/compat_signal.c11
-rw-r--r--arch/s390/kernel/compat_wrapper.S30
-rw-r--r--arch/s390/kernel/cpcmd.c8
-rw-r--r--arch/s390/kernel/debug.c52
-rw-r--r--arch/s390/kernel/entry.S122
-rw-r--r--arch/s390/kernel/entry64.S123
-rw-r--r--arch/s390/kernel/head.S16
-rw-r--r--arch/s390/kernel/head64.S12
-rw-r--r--arch/s390/kernel/machine_kexec.c7
-rw-r--r--arch/s390/kernel/relocate_kernel.S41
-rw-r--r--arch/s390/kernel/relocate_kernel64.S45
-rw-r--r--arch/s390/kernel/s390_ext.c16
-rw-r--r--arch/s390/kernel/setup.c12
-rw-r--r--arch/s390/kernel/signal.c11
-rw-r--r--arch/s390/kernel/smp.c16
-rw-r--r--arch/s390/kernel/syscalls.S5
-rw-r--r--arch/s390/kernel/traps.c15
18 files changed, 445 insertions, 135 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 614056222875..18610cea03a2 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -58,6 +58,7 @@
#include <linux/compat.h>
#include <linux/vfs.h>
#include <linux/ptrace.h>
+#include <linux/fadvise.h>
#include <asm/types.h>
#include <asm/ipc.h>
@@ -1043,3 +1044,40 @@ sys32_timer_create(clockid_t which_clock, struct compat_sigevent *se32,
return ret;
}
+
+/*
+ * 31 bit emulation wrapper functions for sys_fadvise64/fadvise64_64.
+ * These need to rewrite the advise values for POSIX_FADV_{DONTNEED,NOREUSE}
+ * because the 31 bit values differ from the 64 bit values.
+ */
+
+asmlinkage long
+sys32_fadvise64(int fd, loff_t offset, size_t len, int advise)
+{
+ if (advise == 4)
+ advise = POSIX_FADV_DONTNEED;
+ else if (advise == 5)
+ advise = POSIX_FADV_NOREUSE;
+ return sys_fadvise64(fd, offset, len, advise);
+}
+
+struct fadvise64_64_args {
+ int fd;
+ long long offset;
+ long long len;
+ int advice;
+};
+
+asmlinkage long
+sys32_fadvise64_64(struct fadvise64_64_args __user *args)
+{
+ struct fadvise64_64_args a;
+
+ if ( copy_from_user(&a, args, sizeof(a)) )
+ return -EFAULT;
+ if (a.advice == 4)
+ a.advice = POSIX_FADV_DONTNEED;
+ else if (a.advice == 5)
+ a.advice = POSIX_FADV_NOREUSE;
+ return sys_fadvise64_64(a.fd, a.offset, a.len, a.advice);
+}
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index d05d65ac9694..7358cdb8441f 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -637,12 +637,11 @@ handle_signal32(unsigned long sig, struct k_sigaction *ka,
else
setup_frame32(sig, ka, oldset, regs);
- if (!(ka->sa.sa_flags & SA_NODEFER)) {
- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+ spin_lock_irq(&current->sighand->siglock);
+ sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+ if (!(ka->sa.sa_flags & SA_NODEFER))
sigaddset(&current->blocked,sig);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
- }
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
}
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index bf529739c8ab..23fe94e58688 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1251,12 +1251,12 @@ sys32_fadvise64_wrapper:
or %r3,%r4 # get low word of 64bit loff_t
llgfr %r4,%r5 # size_t (unsigned long)
lgfr %r5,%r6 # int
- jg sys_fadvise64
+ jg sys32_fadvise64
.globl sys32_fadvise64_64_wrapper
sys32_fadvise64_64_wrapper:
llgtr %r2,%r2 # struct fadvise64_64_args *
- jg s390_fadvise64_64
+ jg sys32_fadvise64_64
.globl sys32_clock_settime_wrapper
sys32_clock_settime_wrapper:
@@ -1449,3 +1449,29 @@ compat_sys_kexec_load_wrapper:
llgtr %r4,%r4 # struct kexec_segment *
llgfr %r5,%r5 # unsigned long
jg compat_sys_kexec_load
+
+ .globl sys_ioprio_set_wrapper
+sys_ioprio_set_wrapper:
+ lgfr %r2,%r2 # int
+ lgfr %r3,%r3 # int
+ lgfr %r4,%r4 # int
+ jg sys_ioprio_set
+
+ .globl sys_ioprio_get_wrapper
+sys_ioprio_get_wrapper:
+ lgfr %r2,%r2 # int
+ lgfr %r3,%r3 # int
+ jg sys_ioprio_get
+
+ .globl sys_inotify_add_watch_wrapper
+sys_inotify_add_watch_wrapper:
+ lgfr %r2,%r2 # int
+ llgtr %r3,%r3 # const char *
+ llgfr %r4,%r4 # u32
+ jg sys_inotify_add_watch
+
+ .globl sys_inotify_rm_watch_wrapper
+sys_inotify_rm_watch_wrapper:
+ lgfr %r2,%r2 # int
+ llgfr %r3,%r3 # u32
+ jg sys_inotify_rm_watch
diff --git a/arch/s390/kernel/cpcmd.c b/arch/s390/kernel/cpcmd.c
index 20062145e84e..d47fecb42cc5 100644
--- a/arch/s390/kernel/cpcmd.c
+++ b/arch/s390/kernel/cpcmd.c
@@ -46,9 +46,9 @@ int __cpcmd(const char *cmd, char *response, int rlen, int *response_code)
"lra 3,0(%4)\n"
"lr 5,%5\n"
"diag 2,4,0x8\n"
- "brc 8, .Litfits\n"
+ "brc 8, 1f\n"
"ar 5, %5\n"
- ".Litfits: \n"
+ "1: \n"
"lr %0,4\n"
"lr %1,5\n"
: "=d" (return_code), "=d" (return_len)
@@ -64,9 +64,9 @@ int __cpcmd(const char *cmd, char *response, int rlen, int *response_code)
"sam31\n"
"diag 2,4,0x8\n"
"sam64\n"
- "brc 8, .Litfits\n"
+ "brc 8, 1f\n"
"agr 5, %5\n"
- ".Litfits: \n"
+ "1: \n"
"lgr %0,4\n"
"lgr %1,5\n"
: "=d" (return_code), "=d" (return_len)
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index 960ba6029c3a..bc59282da762 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -62,7 +62,7 @@ typedef struct
} debug_sprintf_entry_t;
-extern void tod_to_timeval(uint64_t todval, struct timeval *xtime);
+extern void tod_to_timeval(uint64_t todval, struct timespec *xtime);
/* internal function prototyes */
@@ -374,9 +374,24 @@ debug_info_copy(debug_info_t* in, int mode)
{
int i,j;
debug_info_t* rc;
+ unsigned long flags;
+
+ /* get a consistent copy of the debug areas */
+ do {
+ rc = debug_info_alloc(in->name, in->pages_per_area,
+ in->nr_areas, in->buf_size, in->level, mode);
+ spin_lock_irqsave(&in->lock, flags);
+ if(!rc)
+ goto out;
+ /* has something changed in the meantime ? */
+ if((rc->pages_per_area == in->pages_per_area) &&
+ (rc->nr_areas == in->nr_areas)) {
+ break;
+ }
+ spin_unlock_irqrestore(&in->lock, flags);
+ debug_info_free(rc);
+ } while (1);
- rc = debug_info_alloc(in->name, in->pages_per_area, in->nr_areas,
- in->buf_size, in->level, mode);
if(!rc || (mode == NO_AREAS))
goto out;
@@ -386,6 +401,7 @@ debug_info_copy(debug_info_t* in, int mode)
}
}
out:
+ spin_unlock_irqrestore(&in->lock, flags);
return rc;
}
@@ -593,19 +609,15 @@ debug_open(struct inode *inode, struct file *file)
debug_info_t *debug_info, *debug_info_snapshot;
down(&debug_lock);
-
- /* find debug log and view */
- debug_info = debug_area_first;
- while(debug_info != NULL){
- for (i = 0; i < DEBUG_MAX_VIEWS; i++) {
- if (!debug_info->views[i])
- continue;
- else if (debug_info->debugfs_entries[i] ==
- file->f_dentry) {
- goto found; /* found view ! */
- }
+ debug_info = (struct debug_info*)file->f_dentry->d_inode->u.generic_ip;
+ /* find debug view */
+ for (i = 0; i < DEBUG_MAX_VIEWS; i++) {
+ if (!debug_info->views[i])
+ continue;
+ else if (debug_info->debugfs_entries[i] ==
+ file->f_dentry) {
+ goto found; /* found view ! */
}
- debug_info = debug_info->next;
}
/* no entry found */
rc = -EINVAL;
@@ -833,7 +845,7 @@ extern inline void
debug_finish_entry(debug_info_t * id, debug_entry_t* active, int level,
int exception)
{
- STCK(active->id.stck);
+ active->id.stck = get_clock();
active->id.fields.cpuid = smp_processor_id();
active->caller = __builtin_return_address(0);
active->id.fields.exception = exception;
@@ -1078,7 +1090,7 @@ debug_register_view(debug_info_t * id, struct debug_view *view)
if (view->input_proc)
mode |= S_IWUSR;
pde = debugfs_create_file(view->name, mode, id->debugfs_root_entry,
- NULL, &debug_file_ops);
+ id , &debug_file_ops);
if (!pde){
printk(KERN_WARNING "debug: debugfs_create_file() failed!"\
" Cannot register view %s/%s\n", id->name,view->name);
@@ -1432,7 +1444,7 @@ int
debug_dflt_header_fn(debug_info_t * id, struct debug_view *view,
int area, debug_entry_t * entry, char *out_buf)
{
- struct timeval time_val;
+ struct timespec time_spec;
unsigned long long time;
char *except_str;
unsigned long caller;
@@ -1443,7 +1455,7 @@ debug_dflt_header_fn(debug_info_t * id, struct debug_view *view,
time = entry->id.stck;
/* adjust todclock to 1970 */
time -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
- tod_to_timeval(time, &time_val);
+ tod_to_timeval(time, &time_spec);
if (entry->id.fields.exception)
except_str = "*";
@@ -1451,7 +1463,7 @@ debug_dflt_header_fn(debug_info_t * id, struct debug_view *view,
except_str = "-";
caller = ((unsigned long) entry->caller) & PSW_ADDR_INSN;
rc += sprintf(out_buf, "%02i %011lu:%06lu %1u %1s %02i %p ",
- area, time_val.tv_sec, time_val.tv_usec, level,
+ area, time_spec.tv_sec, time_spec.tv_nsec / 1000, level,
except_str, entry->id.fields.cpuid, (void *) caller);
return rc;
}
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 5b262b5d869f..cbe7d6a2d02c 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -138,14 +138,14 @@ STACK_SIZE = 1 << STACK_SHIFT
st %r12,__SF_BACKCHAIN(%r15) # clear back chain
.endm
- .macro RESTORE_ALL sync
- mvc __LC_RETURN_PSW(8),SP_PSW(%r15) # move user PSW to lowcore
+ .macro RESTORE_ALL psworg,sync
+ mvc \psworg(8),SP_PSW(%r15) # move user PSW to lowcore
.if !\sync
- ni __LC_RETURN_PSW+1,0xfd # clear wait state bit
+ ni \psworg+1,0xfd # clear wait state bit
.endif
lm %r0,%r15,SP_R0(%r15) # load gprs 0-15 of user
STORE_TIMER __LC_EXIT_TIMER
- lpsw __LC_RETURN_PSW # back to caller
+ lpsw \psworg # back to caller
.endm
/*
@@ -235,7 +235,7 @@ sysc_return:
tm __TI_flags+3(%r9),_TIF_WORK_SVC
bnz BASED(sysc_work) # there is work to do (signals etc.)
sysc_leave:
- RESTORE_ALL 1
+ RESTORE_ALL __LC_RETURN_PSW,1
#
# recheck if there is more work to do
@@ -312,8 +312,6 @@ sysc_singlestep:
la %r14,BASED(sysc_return) # load adr. of system return
br %r1 # branch to do_single_step
-__critical_end:
-
#
# call trace before and after sys_call
#
@@ -571,7 +569,8 @@ io_return:
tm __TI_flags+3(%r9),_TIF_WORK_INT
bnz BASED(io_work) # there is work to do (signals etc.)
io_leave:
- RESTORE_ALL 0
+ RESTORE_ALL __LC_RETURN_PSW,0
+io_done:
#ifdef CONFIG_PREEMPT
io_preempt:
@@ -621,7 +620,7 @@ io_work_loop:
#
io_mcck_pending:
l %r1,BASED(.Ls390_handle_mcck)
- l %r14,BASED(io_work_loop)
+ la %r14,BASED(io_work_loop)
br %r1 # TIF bit will be cleared by handler
#
@@ -674,6 +673,8 @@ ext_no_vtime:
basr %r14,%r1
b BASED(io_return)
+__critical_end:
+
/*
* Machine check handler routines
*/
@@ -681,6 +682,7 @@ ext_no_vtime:
.globl mcck_int_handler
mcck_int_handler:
spt __LC_CPU_TIMER_SAVE_AREA # revalidate cpu timer
+ mvc __LC_ASYNC_ENTER_TIMER(8),__LC_CPU_TIMER_SAVE_AREA
lm %r0,%r15,__LC_GPREGS_SAVE_AREA # revalidate gprs
SAVE_ALL_BASE __LC_SAVE_AREA+32
la %r12,__LC_MCK_OLD_PSW
@@ -690,20 +692,11 @@ 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
-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 ?
- bz BASED(mcck_no_vtime)
- UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
- UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
-mcck_no_vtime:
+ 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
#endif
-0:
- tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
+0: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
bno BASED(mcck_int_main) # no -> skip cleanup critical
tm __LC_MCK_OLD_PSW+1,0x01 # test problem state bit
bnz BASED(mcck_int_main) # from user -> load async stack
@@ -720,6 +713,16 @@ mcck_int_main:
be BASED(0f)
l %r15,__LC_PANIC_STACK # load panic stack
0: CREATE_STACK_FRAME __LC_MCK_OLD_PSW,__LC_SAVE_AREA+32
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ 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 ?
+ bz BASED(mcck_no_vtime)
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
+mcck_no_vtime:
+#endif
l %r9,__LC_THREAD_INFO # load pointer to thread_info struct
la %r2,SP_PTREGS(%r15) # load pt_regs
l %r1,BASED(.Ls390_mcck)
@@ -737,7 +740,7 @@ mcck_int_main:
l %r1,BASED(.Ls390_handle_mcck)
basr %r14,%r1 # call machine check handler
mcck_return:
- RESTORE_ALL 0
+ RESTORE_ALL __LC_RETURN_MCCK_PSW,0
#ifdef CONFIG_SMP
/*
@@ -803,6 +806,10 @@ cleanup_table_sysc_leave:
.long sysc_leave + 0x80000000, sysc_work_loop + 0x80000000
cleanup_table_sysc_work_loop:
.long sysc_work_loop + 0x80000000, sysc_reschedule + 0x80000000
+cleanup_table_io_leave:
+ .long io_leave + 0x80000000, io_done + 0x80000000
+cleanup_table_io_work_loop:
+ .long io_work_loop + 0x80000000, io_mcck_pending + 0x80000000
cleanup_critical:
clc 4(4,%r12),BASED(cleanup_table_system_call)
@@ -825,10 +832,26 @@ cleanup_critical:
clc 4(4,%r12),BASED(cleanup_table_sysc_work_loop+4)
bl BASED(cleanup_sysc_return)
0:
+ clc 4(4,%r12),BASED(cleanup_table_io_leave)
+ bl BASED(0f)
+ clc 4(4,%r12),BASED(cleanup_table_io_leave+4)
+ bl BASED(cleanup_io_leave)
+0:
+ clc 4(4,%r12),BASED(cleanup_table_io_work_loop)
+ bl BASED(0f)
+ clc 4(4,%r12),BASED(cleanup_table_io_work_loop+4)
+ bl BASED(cleanup_io_return)
+0:
br %r14
cleanup_system_call:
mvc __LC_RETURN_PSW(8),0(%r12)
+ c %r12,BASED(.Lmck_old_psw)
+ be BASED(0f)
+ la %r12,__LC_SAVE_AREA+16
+ b BASED(1f)
+0: la %r12,__LC_SAVE_AREA+32
+1:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
clc __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn+4)
bh BASED(0f)
@@ -838,11 +861,13 @@ cleanup_system_call:
#endif
clc __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn)
bh BASED(0f)
- mvc __LC_SAVE_AREA(16),__LC_SAVE_AREA+16
-0: st %r13,__LC_SAVE_AREA+20
+ mvc __LC_SAVE_AREA(16),0(%r12)
+0: st %r13,4(%r12)
+ st %r12,__LC_SAVE_AREA+48 # argh
SAVE_ALL __LC_SVC_OLD_PSW,__LC_SAVE_AREA,1
CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
- st %r15,__LC_SAVE_AREA+28
+ l %r12,__LC_SAVE_AREA+48 # argh
+ st %r15,12(%r12)
lh %r7,0x8a
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
cleanup_vtime:
@@ -879,17 +904,21 @@ cleanup_sysc_return:
cleanup_sysc_leave:
clc 4(4,%r12),BASED(cleanup_sysc_leave_insn)
- be BASED(0f)
+ be BASED(2f)
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
clc 4(4,%r12),BASED(cleanup_sysc_leave_insn+4)
- be BASED(0f)
+ be BASED(2f)
#endif
mvc __LC_RETURN_PSW(8),SP_PSW(%r15)
- mvc __LC_SAVE_AREA+16(16),SP_R12(%r15)
- lm %r0,%r11,SP_R0(%r15)
+ c %r12,BASED(.Lmck_old_psw)
+ bne BASED(0f)
+ mvc __LC_SAVE_AREA+32(16),SP_R12(%r15)
+ b BASED(1f)
+0: mvc __LC_SAVE_AREA+16(16),SP_R12(%r15)
+1: lm %r0,%r11,SP_R0(%r15)
l %r15,SP_R15(%r15)
-0: la %r12,__LC_RETURN_PSW
+2: la %r12,__LC_RETURN_PSW
br %r14
cleanup_sysc_leave_insn:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
@@ -897,6 +926,36 @@ cleanup_sysc_leave_insn:
#endif
.long sysc_leave + 10 + 0x80000000
+cleanup_io_return:
+ mvc __LC_RETURN_PSW(4),0(%r12)
+ mvc __LC_RETURN_PSW+4(4),BASED(cleanup_table_io_work_loop)
+ la %r12,__LC_RETURN_PSW
+ br %r14
+
+cleanup_io_leave:
+ clc 4(4,%r12),BASED(cleanup_io_leave_insn)
+ be BASED(2f)
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
+ clc 4(4,%r12),BASED(cleanup_io_leave_insn+4)
+ be BASED(2f)
+#endif
+ mvc __LC_RETURN_PSW(8),SP_PSW(%r15)
+ c %r12,BASED(.Lmck_old_psw)
+ bne BASED(0f)
+ mvc __LC_SAVE_AREA+32(16),SP_R12(%r15)
+ b BASED(1f)
+0: mvc __LC_SAVE_AREA+16(16),SP_R12(%r15)
+1: lm %r0,%r11,SP_R0(%r15)
+ l %r15,SP_R15(%r15)
+2: la %r12,__LC_RETURN_PSW
+ br %r14
+cleanup_io_leave_insn:
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ .long io_leave + 18 + 0x80000000
+#endif
+ .long io_leave + 14 + 0x80000000
+
/*
* Integer constants
*/
@@ -918,6 +977,7 @@ cleanup_sysc_leave_insn:
.Ls390_mcck: .long s390_do_machine_check
.Ls390_handle_mcck:
.long s390_handle_mcck
+.Lmck_old_psw: .long __LC_MCK_OLD_PSW
.Ldo_IRQ: .long do_IRQ
.Ldo_extint: .long do_extint
.Ldo_signal: .long do_signal
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 57ca75d0ad7f..fb77b72ab262 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -131,14 +131,14 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_MCCK_PENDING)
stg %r12,__SF_BACKCHAIN(%r15)
.endm
- .macro RESTORE_ALL sync
- mvc __LC_RETURN_PSW(16),SP_PSW(%r15) # move user PSW to lowcore
+ .macro RESTORE_ALL psworg,sync
+ mvc \psworg(16),SP_PSW(%r15) # move user PSW to lowcore
.if !\sync
- ni __LC_RETURN_PSW+1,0xfd # clear wait state bit
+ ni \psworg+1,0xfd # clear wait state bit
.endif
lmg %r0,%r15,SP_R0(%r15) # load gprs 0-15 of user
STORE_TIMER __LC_EXIT_TIMER
- lpswe __LC_RETURN_PSW # back to caller
+ lpswe \psworg # back to caller
.endm
/*
@@ -214,8 +214,8 @@ sysc_nr_ok:
sysc_do_restart:
larl %r10,sys_call_table
#ifdef CONFIG_S390_SUPPORT
- tm SP_PSW+3(%r15),0x01 # are we running in 31 bit mode ?
- jo sysc_noemu
+ tm __TI_flags+5(%r9),(_TIF_31BIT>>16) # running in 31 bit mode ?
+ jno sysc_noemu
larl %r10,sys_call_table_emu # use 31 bit emulation system calls
sysc_noemu:
#endif
@@ -233,7 +233,7 @@ sysc_return:
tm __TI_flags+7(%r9),_TIF_WORK_SVC
jnz sysc_work # there is work to do (signals etc.)
sysc_leave:
- RESTORE_ALL 1
+ RESTORE_ALL __LC_RETURN_PSW,1
#
# recheck if there is more work to do
@@ -308,8 +308,6 @@ sysc_singlestep:
jg do_single_step # branch to do_sigtrap
-__critical_end:
-
#
# call syscall_trace before and after system call
# special linkage: %r12 contains the return address for trace_svc
@@ -612,7 +610,8 @@ io_return:
tm __TI_flags+7(%r9),_TIF_WORK_INT
jnz io_work # there is work to do (signals etc.)
io_leave:
- RESTORE_ALL 0
+ RESTORE_ALL __LC_RETURN_PSW,0
+io_done:
#ifdef CONFIG_PREEMPT
io_preempt:
@@ -711,6 +710,8 @@ ext_no_vtime:
brasl %r14,do_extint
j io_return
+__critical_end:
+
/*
* Machine check handler routines
*/
@@ -718,6 +719,7 @@ ext_no_vtime:
mcck_int_handler:
la %r1,4095 # revalidate r1
spt __LC_CPU_TIMER_SAVE_AREA-4095(%r1) # revalidate cpu timer
+ mvc __LC_ASYNC_ENTER_TIMER(8),__LC_CPU_TIMER_SAVE_AREA-4095(%r1)
lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)# revalidate gprs
SAVE_ALL_BASE __LC_SAVE_AREA+64
la %r12,__LC_MCK_OLD_PSW
@@ -727,20 +729,11 @@ 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
-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 ?
- jz mcck_no_vtime
- UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
- UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
-mcck_no_vtime:
+ 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
#endif
-0:
- tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
+0: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
jno mcck_int_main # no -> skip cleanup critical
tm __LC_MCK_OLD_PSW+1,0x01 # test problem state bit
jnz mcck_int_main # from user -> load kernel stack
@@ -756,6 +749,16 @@ mcck_int_main:
jz 0f
lg %r15,__LC_PANIC_STACK # load panic stack
0: CREATE_STACK_FRAME __LC_MCK_OLD_PSW,__LC_SAVE_AREA+64
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ 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 ?
+ jz mcck_no_vtime
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
+mcck_no_vtime:
+#endif
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
la %r2,SP_PTREGS(%r15) # load pt_regs
brasl %r14,s390_do_machine_check
@@ -771,7 +774,7 @@ mcck_int_main:
jno mcck_return
brasl %r14,s390_handle_mcck
mcck_return:
- RESTORE_ALL 0
+ RESTORE_ALL __LC_RETURN_MCCK_PSW,0
#ifdef CONFIG_SMP
/*
@@ -833,6 +836,10 @@ cleanup_table_sysc_leave:
.quad sysc_leave, sysc_work_loop
cleanup_table_sysc_work_loop:
.quad sysc_work_loop, sysc_reschedule
+cleanup_table_io_leave:
+ .quad io_leave, io_done
+cleanup_table_io_work_loop:
+ .quad io_work_loop, io_mcck_pending
cleanup_critical:
clc 8(8,%r12),BASED(cleanup_table_system_call)
@@ -855,10 +862,26 @@ cleanup_critical:
clc 8(8,%r12),BASED(cleanup_table_sysc_work_loop+8)
jl cleanup_sysc_return
0:
+ clc 8(8,%r12),BASED(cleanup_table_io_leave)
+ jl 0f
+ clc 8(8,%r12),BASED(cleanup_table_io_leave+8)
+ jl cleanup_io_leave
+0:
+ clc 8(8,%r12),BASED(cleanup_table_io_work_loop)
+ jl 0f
+ clc 8(8,%r12),BASED(cleanup_table_io_work_loop+8)
+ jl cleanup_io_return
+0:
br %r14
cleanup_system_call:
mvc __LC_RETURN_PSW(16),0(%r12)
+ cghi %r12,__LC_MCK_OLD_PSW
+ je 0f
+ la %r12,__LC_SAVE_AREA+32
+ j 1f
+0: la %r12,__LC_SAVE_AREA+64
+1:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+8)
jh 0f
@@ -868,11 +891,13 @@ cleanup_system_call:
#endif
clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn)
jh 0f
- mvc __LC_SAVE_AREA(32),__LC_SAVE_AREA+32
-0: stg %r13,__LC_SAVE_AREA+40
+ mvc __LC_SAVE_AREA(32),0(%r12)
+0: stg %r13,8(%r12)
+ stg %r12,__LC_SAVE_AREA+96 # argh
SAVE_ALL __LC_SVC_OLD_PSW,__LC_SAVE_AREA,1
CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
- stg %r15,__LC_SAVE_AREA+56
+ lg %r12,__LC_SAVE_AREA+96 # argh
+ stg %r15,24(%r12)
llgh %r7,__LC_SVC_INT_CODE
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
cleanup_vtime:
@@ -909,17 +934,21 @@ cleanup_sysc_return:
cleanup_sysc_leave:
clc 8(8,%r12),BASED(cleanup_sysc_leave_insn)
- je 0f
+ je 2f
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
clc 8(8,%r12),BASED(cleanup_sysc_leave_insn+8)
- je 0f
+ je 2f
#endif
mvc __LC_RETURN_PSW(16),SP_PSW(%r15)
- mvc __LC_SAVE_AREA+32(32),SP_R12(%r15)
- lmg %r0,%r11,SP_R0(%r15)
+ cghi %r12,__LC_MCK_OLD_PSW
+ jne 0f
+ mvc __LC_SAVE_AREA+64(32),SP_R12(%r15)
+ j 1f
+0: mvc __LC_SAVE_AREA+32(32),SP_R12(%r15)
+1: lmg %r0,%r11,SP_R0(%r15)
lg %r15,SP_R15(%r15)
-0: la %r12,__LC_RETURN_PSW
+2: la %r12,__LC_RETURN_PSW
br %r14
cleanup_sysc_leave_insn:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
@@ -927,6 +956,36 @@ cleanup_sysc_leave_insn:
#endif
.quad sysc_leave + 12
+cleanup_io_return:
+ mvc __LC_RETURN_PSW(8),0(%r12)
+ mvc __LC_RETURN_PSW+8(8),BASED(cleanup_table_io_work_loop)
+ la %r12,__LC_RETURN_PSW
+ br %r14
+
+cleanup_io_leave:
+ clc 8(8,%r12),BASED(cleanup_io_leave_insn)
+ je 2f
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
+ clc 8(8,%r12),BASED(cleanup_io_leave_insn+8)
+ je 2f
+#endif
+ mvc __LC_RETURN_PSW(16),SP_PSW(%r15)
+ cghi %r12,__LC_MCK_OLD_PSW
+ jne 0f
+ mvc __LC_SAVE_AREA+64(32),SP_R12(%r15)
+ j 1f
+0: mvc __LC_SAVE_AREA+32(32),SP_R12(%r15)
+1: lmg %r0,%r11,SP_R0(%r15)
+ lg %r15,SP_R15(%r15)
+2: la %r12,__LC_RETURN_PSW
+ br %r14
+cleanup_io_leave_insn:
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ .quad io_leave + 20
+#endif
+ .quad io_leave + 16
+
/*
* Integer constants
*/
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index fc8bf5e285f6..2710e66fefba 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -346,6 +346,13 @@ 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
@@ -535,8 +542,13 @@ 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 +777,7 @@ _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..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)
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index 2721c3a32b84..5aa71b05b8ae 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -70,6 +70,8 @@ machine_kexec(struct kimage *image)
for (;;);
}
+extern void pfault_fini(void);
+
static void
kexec_halt_all_cpus(void *kernel_image)
{
@@ -78,6 +80,11 @@ kexec_halt_all_cpus(void *kernel_image)
struct kimage *image;
relocate_kernel_t data_mover;
+#ifdef CONFIG_PFAULT
+ if (MACHINE_IS_VM)
+ pfault_fini();
+#endif
+
if (atomic_compare_and_swap(-1, smp_processor_id(), &cpuid))
signal_processor(smp_processor_id(), sigp_stop);
diff --git a/arch/s390/kernel/relocate_kernel.S b/arch/s390/kernel/relocate_kernel.S
index d5e4a62fbb79..2a25ec7147ff 100644
--- a/arch/s390/kernel/relocate_kernel.S
+++ b/arch/s390/kernel/relocate_kernel.S
@@ -4,6 +4,7 @@
* (C) Copyright IBM Corp. 2005
*
* Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
+ * Heiko Carstens <heiko.carstens@de.ibm.com>
*
*/
@@ -25,8 +26,31 @@
relocate_kernel:
basr %r13,0 #base address
.base:
- spx zero64-.base(%r13) #absolute addressing mode
stnsm sys_msk-.base(%r13),0xf8 #disable DAT and IRQ (external)
+ spx zero64-.base(%r13) #absolute addressing mode
+ stctl %c0,%c15,ctlregs-.base(%r13)
+ stm %r0,%r15,gprregs-.base(%r13)
+ la %r1,load_psw-.base(%r13)
+ mvc 0(8,%r0),0(%r1)
+ la %r0,.back-.base(%r13)
+ st %r0,4(%r0)
+ oi 4(%r0),0x80
+ mvc 0x68(8,%r0),0(%r1)
+ la %r0,.back_pgm-.base(%r13)
+ st %r0,0x6c(%r0)
+ oi 0x6c(%r0),0x80
+ lhi %r0,0
+ diag %r0,%r0,0x308
+ .back:
+ basr %r13,0
+ .back_base:
+ oi have_diag308-.back_base(%r13),0x01
+ lctl %c0,%c15,ctlregs-.back_base(%r13)
+ lm %r0,%r15,gprregs-.back_base(%r13)
+ j .start_reloc
+ .back_pgm:
+ lm %r0,%r15,gprregs-.base(%r13)
+ .start_reloc:
lhi %r10,-1 #preparing the mask
sll %r10,12 #shift it such that it becomes 0xf000
.top:
@@ -63,6 +87,10 @@
o %r3,4(%r4) #or load address into psw
st %r3,4(%r4)
mvc 0(8,%r0),0(%r4) #copy psw to absolute address 0
+ tm have_diag308-.base(%r13),0x01
+ jno .no_diag308
+ diag %r0,%r0,0x308
+ .no_diag308:
sr %r1,%r1 #clear %r1
sr %r2,%r2 #clear %r2
sigp %r1,%r2,0x12 #set cpuid to zero
@@ -75,6 +103,17 @@
.long 0x00080000,0x80000000
sys_msk:
.quad 0
+ ctlregs:
+ .rept 16
+ .long 0
+ .endr
+ gprregs:
+ .rept 16
+ .long 0
+ .endr
+ have_diag308:
+ .byte 0
+ .align 8
relocate_kernel_end:
.globl relocate_kernel_len
relocate_kernel_len:
diff --git a/arch/s390/kernel/relocate_kernel64.S b/arch/s390/kernel/relocate_kernel64.S
index 96290cc4eb3c..8cdb86e8911f 100644
--- a/arch/s390/kernel/relocate_kernel64.S
+++ b/arch/s390/kernel/relocate_kernel64.S
@@ -4,6 +4,7 @@
* (C) Copyright IBM Corp. 2005
*
* Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
+ * Heiko Carstens <heiko.carstens@de.ibm.com>
*
*/
@@ -26,8 +27,34 @@
relocate_kernel:
basr %r13,0 #base address
.base:
+ stnsm sys_msk-.base(%r13),0xf8 #disable DAT and IRQs
spx zero64-.base(%r13) #absolute addressing mode
- stnsm sys_msk-.base(%r13),0xf8 #disable DAT and IRQ (external)
+ stctg %c0,%c15,ctlregs-.base(%r13)
+ stmg %r0,%r15,gprregs-.base(%r13)
+ lghi %r0,3
+ sllg %r0,%r0,31
+ stg %r0,0x1d0(%r0)
+ la %r0,.back_pgm-.base(%r13)
+ stg %r0,0x1d8(%r0)
+ la %r1,load_psw-.base(%r13)
+ mvc 0(8,%r0),0(%r1)
+ la %r0,.back-.base(%r13)
+ st %r0,4(%r0)
+ oi 4(%r0),0x80
+ lghi %r0,0
+ diag %r0,%r0,0x308
+ .back:
+ lhi %r1,1 #mode 1 = esame
+ sigp %r1,%r0,0x12 #switch to esame mode
+ sam64 #switch to 64 bit addressing mode
+ basr %r13,0
+ .back_base:
+ oi have_diag308-.back_base(%r13),0x01
+ lctlg %c0,%c15,ctlregs-.back_base(%r13)
+ lmg %r0,%r15,gprregs-.back_base(%r13)
+ j .top
+ .back_pgm:
+ lmg %r0,%r15,gprregs-.base(%r13)
.top:
lghi %r7,4096 #load PAGE_SIZE in r7
lghi %r9,4096 #load PAGE_SIZE in r9
@@ -62,6 +89,10 @@
o %r3,4(%r4) #or load address into psw
st %r3,4(%r4)
mvc 0(8,%r0),0(%r4) #copy psw to absolute address 0
+ tm have_diag308-.base(%r13),0x01
+ jno .no_diag308
+ diag %r0,%r0,0x308
+ .no_diag308:
sam31 #31 bit mode
sr %r1,%r1 #erase register r1
sr %r2,%r2 #erase register r2
@@ -75,8 +106,18 @@
.long 0x00080000,0x80000000
sys_msk:
.quad 0
+ ctlregs:
+ .rept 16
+ .quad 0
+ .endr
+ gprregs:
+ .rept 16
+ .quad 0
+ .endr
+ have_diag308:
+ .byte 0
+ .align 8
relocate_kernel_end:
.globl relocate_kernel_len
relocate_kernel_len:
.quad relocate_kernel_end - relocate_kernel
-
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 b6d740ac0e6e..5ba5a5485da9 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -299,24 +299,18 @@ void machine_restart(char *command)
_machine_restart(command);
}
-EXPORT_SYMBOL(machine_restart);
-
void machine_halt(void)
{
console_unblank();
_machine_halt();
}
-EXPORT_SYMBOL(machine_halt);
-
void machine_power_off(void)
{
console_unblank();
_machine_power_off();
}
-EXPORT_SYMBOL(machine_power_off);
-
static void __init
add_memory_hole(unsigned long start, unsigned long end)
{
@@ -437,12 +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/signal.c b/arch/s390/kernel/signal.c
index 610c1d03e975..6a3f5b7473a9 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -429,13 +429,12 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
else
setup_frame(sig, ka, oldset, regs);
- if (!(ka->sa.sa_flags & SA_NODEFER)) {
- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+ spin_lock_irq(&current->sighand->siglock);
+ sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+ if (!(ka->sa.sa_flags & SA_NODEFER))
sigaddset(&current->blocked,sig);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
- }
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
}
/*
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 642572a8e334..85222fee4361 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);
}
}
@@ -537,7 +537,8 @@ int __devinit start_secondary(void *cpuvoid)
#endif
#ifdef CONFIG_PFAULT
/* Enable pfault pseudo page faults on this cpu. */
- pfault_init();
+ if (MACHINE_IS_VM)
+ pfault_init();
#endif
/* Mark this cpu as online */
cpu_set(smp_processor_id(), cpu_online_map);
@@ -690,7 +691,8 @@ __cpu_disable(void)
#ifdef CONFIG_PFAULT
/* Disable pfault pseudo page faults on this cpu. */
- pfault_fini();
+ if (MACHINE_IS_VM)
+ pfault_fini();
#endif
/* disable all external interrupts */
@@ -751,9 +753,9 @@ 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));
/*
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index a8668afb5f87..426d7cafdab3 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -290,3 +290,8 @@ SYSCALL(sys_add_key,sys_add_key,compat_sys_add_key_wrapper)
SYSCALL(sys_request_key,sys_request_key,compat_sys_request_key_wrapper)
SYSCALL(sys_keyctl,sys_keyctl,compat_sys_keyctl) /* 280 */
SYSCALL(sys_waitid,sys_waitid,compat_sys_waitid_wrapper)
+SYSCALL(sys_ioprio_set,sys_ioprio_set,sys_ioprio_set_wrapper)
+SYSCALL(sys_ioprio_get,sys_ioprio_get,sys_ioprio_get_wrapper)
+SYSCALL(sys_inotify_init,sys_inotify_init,sys_inotify_init)
+SYSCALL(sys_inotify_add_watch,sys_inotify_add_watch,sys_inotify_add_watch_wrapper)
+SYSCALL(sys_inotify_rm_watch,sys_inotify_rm_watch,sys_inotify_rm_watch_wrapper)
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index bc7b7be7acbe..6b8703ec2ae6 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -29,6 +29,7 @@
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/kallsyms.h>
+#include <linux/reboot.h>
#include <asm/system.h>
#include <asm/uaccess.h>
@@ -675,6 +676,19 @@ asmlinkage void kernel_stack_overflow(struct pt_regs * regs)
panic("Corrupt kernel stack, can't continue.");
}
+#ifndef CONFIG_ARCH_S390X
+static int
+pagex_reboot_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+ if (MACHINE_IS_VM)
+ cpcmd("SET PAGEX OFF", NULL, 0, NULL);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block pagex_reboot_notifier = {
+ .notifier_call = &pagex_reboot_event,
+};
+#endif
/* init is done in lowcore.S and head.S */
@@ -735,6 +749,7 @@ void __init trap_init(void)
&ext_int_pfault);
#endif
#ifndef CONFIG_ARCH_S390X
+ register_reboot_notifier(&pagex_reboot_notifier);
cpcmd("SET PAGEX ON", NULL, 0, NULL);
#endif
}
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