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-rw-r--r--arch/s390/kernel/asm-offsets.c1
-rw-r--r--arch/s390/kernel/cache.c6
-rw-r--r--arch/s390/kernel/ftrace.c17
-rw-r--r--arch/s390/kernel/ftrace.h2
-rw-r--r--arch/s390/kernel/mcount.S11
-rw-r--r--arch/s390/kernel/module.c12
-rw-r--r--arch/s390/kernel/nospec-branch.c6
-rw-r--r--arch/s390/kernel/perf_cpum_cf.c11
-rw-r--r--arch/s390/kernel/processor.c22
-rw-r--r--arch/s390/kernel/setup.c1
-rw-r--r--arch/s390/kernel/smp.c1
-rw-r--r--arch/s390/kernel/uprobes.c16
12 files changed, 16 insertions, 90 deletions
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index c253d3faf443..7c74f0e17e5a 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -122,7 +122,6 @@ int main(void)
OFFSET(__LC_LPP, lowcore, lpp);
OFFSET(__LC_CURRENT_PID, lowcore, current_pid);
OFFSET(__LC_GMAP, lowcore, gmap);
- OFFSET(__LC_BR_R1, lowcore, br_r1_trampoline);
OFFSET(__LC_LAST_BREAK, lowcore, last_break);
/* software defined ABI-relevant lowcore locations 0xe00 - 0xe20 */
OFFSET(__LC_DUMP_REIPL, lowcore, ipib);
diff --git a/arch/s390/kernel/cache.c b/arch/s390/kernel/cache.c
index 8a9c3bf69f48..7ee3651d00ab 100644
--- a/arch/s390/kernel/cache.c
+++ b/arch/s390/kernel/cache.c
@@ -70,8 +70,6 @@ void show_cacheinfo(struct seq_file *m)
struct cacheinfo *cache;
int idx;
- if (!test_facility(34))
- return;
this_cpu_ci = get_cpu_cacheinfo(cpumask_any(cpu_online_mask));
for (idx = 0; idx < this_cpu_ci->num_leaves; idx++) {
cache = this_cpu_ci->info_list + idx;
@@ -131,8 +129,6 @@ int init_cache_level(unsigned int cpu)
union cache_topology ct;
enum cache_type ctype;
- if (!test_facility(34))
- return -EOPNOTSUPP;
if (!this_cpu_ci)
return -EINVAL;
ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0);
@@ -156,8 +152,6 @@ int populate_cache_leaves(unsigned int cpu)
union cache_topology ct;
enum cache_type ctype;
- if (!test_facility(34))
- return -EOPNOTSUPP;
ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0);
for (idx = 0, level = 0; level < this_cpu_ci->num_levels &&
idx < this_cpu_ci->num_leaves; idx++, level++) {
diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c
index d8b96c5923c0..5e1f7bc00a25 100644
--- a/arch/s390/kernel/ftrace.c
+++ b/arch/s390/kernel/ftrace.c
@@ -60,15 +60,6 @@ asm(
#ifdef CONFIG_EXPOLINE
asm(
" .align 16\n"
- "ftrace_shared_hotpatch_trampoline_ex:\n"
- " lmg %r0,%r1,2(%r1)\n"
- " ex %r0," __stringify(__LC_BR_R1) "(%r0)\n"
- " j .\n"
- "ftrace_shared_hotpatch_trampoline_ex_end:\n"
-);
-
-asm(
- " .align 16\n"
"ftrace_shared_hotpatch_trampoline_exrl:\n"
" lmg %r0,%r1,2(%r1)\n"
" .insn ril,0xc60000000000,%r0,0f\n" /* exrl */
@@ -90,12 +81,8 @@ static const char *ftrace_shared_hotpatch_trampoline(const char **end)
tend = ftrace_shared_hotpatch_trampoline_br_end;
#ifdef CONFIG_EXPOLINE
if (!nospec_disable) {
- tstart = ftrace_shared_hotpatch_trampoline_ex;
- tend = ftrace_shared_hotpatch_trampoline_ex_end;
- if (test_facility(35)) { /* exrl */
- tstart = ftrace_shared_hotpatch_trampoline_exrl;
- tend = ftrace_shared_hotpatch_trampoline_exrl_end;
- }
+ tstart = ftrace_shared_hotpatch_trampoline_exrl;
+ tend = ftrace_shared_hotpatch_trampoline_exrl_end;
}
#endif /* CONFIG_EXPOLINE */
if (end)
diff --git a/arch/s390/kernel/ftrace.h b/arch/s390/kernel/ftrace.h
index 69e416f4c6b0..7f75a9616406 100644
--- a/arch/s390/kernel/ftrace.h
+++ b/arch/s390/kernel/ftrace.h
@@ -16,8 +16,6 @@ extern struct ftrace_hotpatch_trampoline __ftrace_hotpatch_trampolines_start[];
extern struct ftrace_hotpatch_trampoline __ftrace_hotpatch_trampolines_end[];
extern const char ftrace_shared_hotpatch_trampoline_br[];
extern const char ftrace_shared_hotpatch_trampoline_br_end[];
-extern const char ftrace_shared_hotpatch_trampoline_ex[];
-extern const char ftrace_shared_hotpatch_trampoline_ex_end[];
extern const char ftrace_shared_hotpatch_trampoline_exrl[];
extern const char ftrace_shared_hotpatch_trampoline_exrl_end[];
extern const char ftrace_plt_template[];
diff --git a/arch/s390/kernel/mcount.S b/arch/s390/kernel/mcount.S
index 6ace43d7e8d2..1326927a17b5 100644
--- a/arch/s390/kernel/mcount.S
+++ b/arch/s390/kernel/mcount.S
@@ -35,14 +35,8 @@ ENDPROC(ftrace_stub)
.if \allregs == 1
# save psw mask
# don't put any instructions clobbering CC before this point
-#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
epsw %r1,%r14
risbg %r14,%r1,0,31,32
-#else
- epsw %r14,%r1
- sllg %r14,%r14,32
- lr %r14,%r1
-#endif
.endif
lgr %r1,%r15
@@ -58,12 +52,7 @@ ENDPROC(ftrace_stub)
.if \allregs == 1
stg %r14,(STACK_PTREGS_PSW)(%r15)
-#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
mvghi STACK_PTREGS_FLAGS(%r15),_PIF_FTRACE_FULL_REGS
-#else
- lghi %r14,_PIF_FTRACE_FULL_REGS
- stg %r14,STACK_PTREGS_FLAGS(%r15)
-#endif
.else
xc STACK_PTREGS_FLAGS(8,%r15),STACK_PTREGS_FLAGS(%r15)
.endif
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index b032e556eeb7..c0dd72db77b8 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -517,15 +517,9 @@ int module_finalize(const Elf_Ehdr *hdr,
ij = me->core_layout.base + me->arch.plt_offset +
me->arch.plt_size - PLT_ENTRY_SIZE;
- if (test_facility(35)) {
- ij[0] = 0xc6000000; /* exrl %r0,.+10 */
- ij[1] = 0x0005a7f4; /* j . */
- ij[2] = 0x000007f1; /* br %r1 */
- } else {
- ij[0] = 0x44000000 | (unsigned int)
- offsetof(struct lowcore, br_r1_trampoline);
- ij[1] = 0xa7f40000; /* j . */
- }
+ ij[0] = 0xc6000000; /* exrl %r0,.+10 */
+ ij[1] = 0x0005a7f4; /* j . */
+ ij[2] = 0x000007f1; /* br %r1 */
}
secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
diff --git a/arch/s390/kernel/nospec-branch.c b/arch/s390/kernel/nospec-branch.c
index c302e0a7d38f..717bbcc056e5 100644
--- a/arch/s390/kernel/nospec-branch.c
+++ b/arch/s390/kernel/nospec-branch.c
@@ -118,12 +118,6 @@ static void __init_or_module __nospec_revert(s32 *start, s32 *end)
if (thunk[0] == 0xc6 && thunk[1] == 0x00)
/* exrl %r0,<target-br> */
br = thunk + (*(int *)(thunk + 2)) * 2;
- else if (thunk[0] == 0xc0 && (thunk[1] & 0x0f) == 0x00 &&
- thunk[6] == 0x44 && thunk[7] == 0x00 &&
- (thunk[8] & 0x0f) == 0x00 && thunk[9] == 0x00 &&
- (thunk[1] & 0xf0) == (thunk[8] & 0xf0))
- /* larl %rx,<target br> + ex %r0,0(%rx) */
- br = thunk + (*(int *)(thunk + 2)) * 2;
else
continue;
if (br[0] != 0x07 || (br[1] & 0xf0) != 0xf0)
diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c
index ee8707abdb6a..483ab5e10164 100644
--- a/arch/s390/kernel/perf_cpum_cf.c
+++ b/arch/s390/kernel/perf_cpum_cf.c
@@ -1451,6 +1451,8 @@ static size_t cfdiag_maxsize(struct cpumf_ctr_info *info)
/* Get the CPU speed, try sampling facility first and CPU attributes second. */
static void cfdiag_get_cpu_speed(void)
{
+ unsigned long mhz;
+
if (cpum_sf_avail()) { /* Sampling facility first */
struct hws_qsi_info_block si;
@@ -1464,12 +1466,9 @@ static void cfdiag_get_cpu_speed(void)
/* Fallback: CPU speed extract static part. Used in case
* CPU Measurement Sampling Facility is turned off.
*/
- if (test_facility(34)) {
- unsigned long mhz = __ecag(ECAG_CPU_ATTRIBUTE, 0);
-
- if (mhz != -1UL)
- cfdiag_cpu_speed = mhz & 0xffffffff;
- }
+ mhz = __ecag(ECAG_CPU_ATTRIBUTE, 0);
+ if (mhz != -1UL)
+ cfdiag_cpu_speed = mhz & 0xffffffff;
}
static int cfset_init(void)
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index d9d4a806979e..7a74ea5f7531 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -172,8 +172,7 @@ static void show_cpu_summary(struct seq_file *m, void *v)
static int __init setup_hwcaps(void)
{
/* instructions named N3, "backported" to esa-mode */
- if (test_facility(0))
- elf_hwcap |= HWCAP_ESAN3;
+ elf_hwcap |= HWCAP_ESAN3;
/* z/Architecture mode active */
elf_hwcap |= HWCAP_ZARCH;
@@ -191,8 +190,7 @@ static int __init setup_hwcaps(void)
elf_hwcap |= HWCAP_LDISP;
/* extended-immediate */
- if (test_facility(21))
- elf_hwcap |= HWCAP_EIMM;
+ elf_hwcap |= HWCAP_EIMM;
/* extended-translation facility 3 enhancement */
if (test_facility(22) && test_facility(30))
@@ -262,21 +260,7 @@ static int __init setup_elf_platform(void)
get_cpu_id(&cpu_id);
add_device_randomness(&cpu_id, sizeof(cpu_id));
switch (cpu_id.machine) {
- case 0x2064:
- case 0x2066:
- default: /* Use "z900" as default for 64 bit kernels. */
- strcpy(elf_platform, "z900");
- break;
- case 0x2084:
- case 0x2086:
- strcpy(elf_platform, "z990");
- break;
- case 0x2094:
- case 0x2096:
- strcpy(elf_platform, "z9-109");
- break;
- case 0x2097:
- case 0x2098:
+ default: /* Use "z10" as default. */
strcpy(elf_platform, "z10");
break;
case 0x2817:
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 05327be3a982..84e23fcc1106 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -490,7 +490,6 @@ static void __init setup_lowcore_dat_off(void)
lc->spinlock_lockval = arch_spin_lockval(0);
lc->spinlock_index = 0;
arch_spin_lock_setup(0);
- lc->br_r1_trampoline = 0x07f1; /* br %r1 */
lc->return_lpswe = gen_lpswe(__LC_RETURN_PSW);
lc->return_mcck_lpswe = gen_lpswe(__LC_RETURN_MCCK_PSW);
lc->preempt_count = PREEMPT_DISABLED;
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 368b58e4c2e7..127da1850b06 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -207,7 +207,6 @@ static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)
lc->cpu_nr = cpu;
lc->spinlock_lockval = arch_spin_lockval(cpu);
lc->spinlock_index = 0;
- lc->br_r1_trampoline = 0x07f1; /* br %r1 */
lc->return_lpswe = gen_lpswe(__LC_RETURN_PSW);
lc->return_mcck_lpswe = gen_lpswe(__LC_RETURN_MCCK_PSW);
lc->preempt_count = PREEMPT_DISABLED;
diff --git a/arch/s390/kernel/uprobes.c b/arch/s390/kernel/uprobes.c
index bd3ef121c379..b88345ef8bd9 100644
--- a/arch/s390/kernel/uprobes.c
+++ b/arch/s390/kernel/uprobes.c
@@ -177,9 +177,7 @@ static void adjust_psw_addr(psw_t *psw, unsigned long len)
__typeof__(*(ptr)) input; \
int __rc = 0; \
\
- if (!test_facility(34)) \
- __rc = EMU_ILLEGAL_OP; \
- else if ((u64 __force)ptr & mask) \
+ if ((u64 __force)ptr & mask) \
__rc = EMU_SPECIFICATION; \
else if (get_user(input, ptr)) \
__rc = EMU_ADDRESSING; \
@@ -194,9 +192,7 @@ static void adjust_psw_addr(psw_t *psw, unsigned long len)
__typeof__(ptr) __ptr = (ptr); \
int __rc = 0; \
\
- if (!test_facility(34)) \
- __rc = EMU_ILLEGAL_OP; \
- else if ((u64 __force)__ptr & mask) \
+ if ((u64 __force)__ptr & mask) \
__rc = EMU_SPECIFICATION; \
else if (put_user(*(input), __ptr)) \
__rc = EMU_ADDRESSING; \
@@ -213,9 +209,7 @@ static void adjust_psw_addr(psw_t *psw, unsigned long len)
__typeof__(*(ptr)) input; \
int __rc = 0; \
\
- if (!test_facility(34)) \
- __rc = EMU_ILLEGAL_OP; \
- else if ((u64 __force)ptr & mask) \
+ if ((u64 __force)ptr & mask) \
__rc = EMU_SPECIFICATION; \
else if (get_user(input, ptr)) \
__rc = EMU_ADDRESSING; \
@@ -327,10 +321,6 @@ static void handle_insn_ril(struct arch_uprobe *auprobe, struct pt_regs *regs)
break;
case 0xc6:
switch (insn->opc1) {
- case 0x02: /* pfdrl */
- if (!test_facility(34))
- rc = EMU_ILLEGAL_OP;
- break;
case 0x04: /* cghrl */
rc = emu_cmp_ril(regs, (s16 __user *)uptr, &rx->s64);
break;
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