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-rw-r--r--arch/s390/kernel/Makefile2
-rw-r--r--arch/s390/kernel/diag.c21
-rw-r--r--arch/s390/kernel/dis.c1
-rw-r--r--arch/s390/kernel/entry.S2
-rw-r--r--arch/s390/kernel/entry64.S2
-rw-r--r--arch/s390/kernel/head.S2
-rw-r--r--arch/s390/kernel/jump_label.c59
-rw-r--r--arch/s390/kernel/reipl64.S2
-rw-r--r--arch/s390/kernel/setup.c2
-rw-r--r--arch/s390/kernel/smp.c6
-rw-r--r--arch/s390/kernel/switch_cpu.S4
-rw-r--r--arch/s390/kernel/switch_cpu64.S4
-rw-r--r--arch/s390/kernel/time.c6
-rw-r--r--arch/s390/kernel/vtime.c2
14 files changed, 79 insertions, 36 deletions
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 64230bc392f..5ff15dacb57 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -23,7 +23,7 @@ CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
obj-y := bitmap.o traps.o time.o process.o base.o early.o setup.o \
processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o \
- vdso.o vtime.o sysinfo.o nmi.o sclp.o
+ vdso.o vtime.o sysinfo.o nmi.o sclp.o jump_label.o
obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o)
obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c
index c032d11da8a..8237fc07ac7 100644
--- a/arch/s390/kernel/diag.c
+++ b/arch/s390/kernel/diag.c
@@ -9,27 +9,6 @@
#include <asm/diag.h>
/*
- * Diagnose 10: Release pages
- */
-void diag10(unsigned long addr)
-{
- if (addr >= 0x7ff00000)
- return;
- asm volatile(
-#ifdef CONFIG_64BIT
- " sam31\n"
- " diag %0,%0,0x10\n"
- "0: sam64\n"
-#else
- " diag %0,%0,0x10\n"
- "0:\n"
-#endif
- EX_TABLE(0b, 0b)
- : : "a" (addr));
-}
-EXPORT_SYMBOL(diag10);
-
-/*
* Diagnose 14: Input spool file manipulation
*/
int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode)
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index c83726c9fe0..3d4a78fc1ad 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -672,6 +672,7 @@ static struct insn opcode_b2[] = {
{ "rp", 0x77, INSTR_S_RD },
{ "stcke", 0x78, INSTR_S_RD },
{ "sacf", 0x79, INSTR_S_RD },
+ { "spp", 0x80, INSTR_S_RD },
{ "stsi", 0x7d, INSTR_S_RD },
{ "srnm", 0x99, INSTR_S_RD },
{ "stfpc", 0x9c, INSTR_S_RD },
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 648f64239a9..1b67fc6ebdc 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -836,7 +836,7 @@ restart_base:
stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on
basr %r14,0
l %r14,restart_addr-.(%r14)
- br %r14 # branch to start_secondary
+ basr %r14,%r14 # branch to start_secondary
restart_addr:
.long start_secondary
.align 8
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 9d3603d6c51..9fd86456349 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -841,7 +841,7 @@ restart_base:
mvc __LC_SYSTEM_TIMER(8),__TI_system_timer(%r1)
xc __LC_STEAL_TIMER(8),__LC_STEAL_TIMER
stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on
- jg start_secondary
+ brasl %r14,start_secondary
.align 8
restart_vtime:
.long 0x7fffffff,0xffffffff
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index 7061398341d..fb317bf2c37 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -460,7 +460,7 @@ startup:
#ifndef CONFIG_MARCH_G5
# check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10}
xc __LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST
- stfl __LC_STFL_FAC_LIST # store facility list
+ .insn s,0xb2b10000,__LC_STFL_FAC_LIST # store facility list
tm __LC_STFL_FAC_LIST,0x01 # stfle available ?
jz 0f
la %r0,0
diff --git a/arch/s390/kernel/jump_label.c b/arch/s390/kernel/jump_label.c
new file mode 100644
index 00000000000..44cc06bedf7
--- /dev/null
+++ b/arch/s390/kernel/jump_label.c
@@ -0,0 +1,59 @@
+/*
+ * Jump label s390 support
+ *
+ * Copyright IBM Corp. 2011
+ * Author(s): Jan Glauber <jang@linux.vnet.ibm.com>
+ */
+#include <linux/module.h>
+#include <linux/uaccess.h>
+#include <linux/stop_machine.h>
+#include <linux/jump_label.h>
+#include <asm/ipl.h>
+
+#ifdef HAVE_JUMP_LABEL
+
+struct insn {
+ u16 opcode;
+ s32 offset;
+} __packed;
+
+struct insn_args {
+ unsigned long *target;
+ struct insn *insn;
+ ssize_t size;
+};
+
+static int __arch_jump_label_transform(void *data)
+{
+ struct insn_args *args = data;
+ int rc;
+
+ rc = probe_kernel_write(args->target, args->insn, args->size);
+ WARN_ON_ONCE(rc < 0);
+ return 0;
+}
+
+void arch_jump_label_transform(struct jump_entry *entry,
+ enum jump_label_type type)
+{
+ struct insn_args args;
+ struct insn insn;
+
+ if (type == JUMP_LABEL_ENABLE) {
+ /* brcl 15,offset */
+ insn.opcode = 0xc0f4;
+ insn.offset = (entry->target - entry->code) >> 1;
+ } else {
+ /* brcl 0,0 */
+ insn.opcode = 0xc004;
+ insn.offset = 0;
+ }
+
+ args.target = (void *) entry->code;
+ args.insn = &insn;
+ args.size = JUMP_LABEL_NOP_SIZE;
+
+ stop_machine(__arch_jump_label_transform, &args, NULL);
+}
+
+#endif
diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S
index 5e73dee63ba..9eabbc90795 100644
--- a/arch/s390/kernel/reipl64.S
+++ b/arch/s390/kernel/reipl64.S
@@ -78,7 +78,7 @@ do_reipl_asm: basr %r13,0
* in the ESA psw.
* Bit 31 of the addresses has to be 0 for the
* 31bit lpswe instruction a fact they appear to have
- * ommited from the pop.
+ * omitted from the pop.
*/
.Lnewpsw: .quad 0x0000000080000000
.quad .Lpg1
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index ed183c2c616..f5434d1ecb3 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -708,7 +708,7 @@ static void __init setup_hwcaps(void)
* and 1ULL<<0 as bit 63. Bits 0-31 contain the same information
* as stored by stfl, bits 32-xxx contain additional facilities.
* How many facility words are stored depends on the number of
- * doublewords passed to the instruction. The additional facilites
+ * doublewords passed to the instruction. The additional facilities
* are:
* Bit 42: decimal floating point facility is installed
* Bit 44: perform floating point operation facility is installed
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 63a97db83f9..63c7d9ff220 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -165,12 +165,12 @@ static void do_ext_call_interrupt(unsigned int ext_int_code,
kstat_cpu(smp_processor_id()).irqs[EXTINT_IPI]++;
/*
* handle bit signal external calls
- *
- * For the ec_schedule signal we have to do nothing. All the work
- * is done automatically when we return from the interrupt.
*/
bits = xchg(&S390_lowcore.ext_call_fast, 0);
+ if (test_bit(ec_schedule, &bits))
+ scheduler_ipi();
+
if (test_bit(ec_call_function, &bits))
generic_smp_call_function_interrupt();
diff --git a/arch/s390/kernel/switch_cpu.S b/arch/s390/kernel/switch_cpu.S
index 469f11b574f..20530dd2eab 100644
--- a/arch/s390/kernel/switch_cpu.S
+++ b/arch/s390/kernel/switch_cpu.S
@@ -46,7 +46,9 @@ smp_restart_cpu:
ltr %r4,%r4 /* New stack ? */
jz 1f
lr %r15,%r4
-1: basr %r14,%r2
+1: lr %r14,%r2 /* r14: Function to call */
+ lr %r2,%r3 /* r2 : Parameter for function*/
+ basr %r14,%r14 /* Call function */
.gprregs_addr:
.long .gprregs
diff --git a/arch/s390/kernel/switch_cpu64.S b/arch/s390/kernel/switch_cpu64.S
index d94aacc898c..5be3f43898f 100644
--- a/arch/s390/kernel/switch_cpu64.S
+++ b/arch/s390/kernel/switch_cpu64.S
@@ -42,7 +42,9 @@ smp_restart_cpu:
ltgr %r4,%r4 /* New stack ? */
jz 1f
lgr %r15,%r4
-1: basr %r14,%r2
+1: lgr %r14,%r2 /* r14: Function to call */
+ lgr %r2,%r3 /* r2 : Parameter for function*/
+ basr %r14,%r14 /* Call function */
.section .data,"aw",@progbits
.gprregs:
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 9e7b039458d..87be655557a 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -724,7 +724,7 @@ static void clock_sync_cpu(struct clock_sync_data *sync)
}
/*
- * Sync the TOD clock using the port refered to by aibp. This port
+ * Sync the TOD clock using the port referred to by aibp. This port
* has to be enabled and the other port has to be disabled. The
* last eacr update has to be more than 1.6 seconds in the past.
*/
@@ -1012,7 +1012,7 @@ static void etr_work_fn(struct work_struct *work)
eacr = etr_handle_update(&aib, eacr);
/*
- * Select ports to enable. The prefered synchronization mode is PPS.
+ * Select ports to enable. The preferred synchronization mode is PPS.
* If a port can be enabled depends on a number of things:
* 1) The port needs to be online and uptodate. A port is not
* disabled just because it is not uptodate, but it is only
@@ -1091,7 +1091,7 @@ static void etr_work_fn(struct work_struct *work)
/*
* Update eacr and try to synchronize the clock. If the update
* of eacr caused a stepping port switch (or if we have to
- * assume that a stepping port switch has occured) or the
+ * assume that a stepping port switch has occurred) or the
* clock syncing failed, reset the sync check control bit
* and set up a timer to try again after 0.5 seconds
*/
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 1ccdf4d8aa8..5e8ead4b4ab 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -44,7 +44,7 @@ static inline void set_vtimer(__u64 expires)
__u64 timer;
asm volatile (" STPT %0\n" /* Store current cpu timer value */
- " SPT %1" /* Set new value immediatly afterwards */
+ " SPT %1" /* Set new value immediately afterwards */
: "=m" (timer) : "m" (expires) );
S390_lowcore.system_timer += S390_lowcore.last_update_timer - timer;
S390_lowcore.last_update_timer = expires;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-22 06:26:11 +0000