summaryrefslogtreecommitdiff
path: root/arch/s390/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r--arch/s390/kernel/asm-offsets.c15
-rw-r--r--arch/s390/kernel/base.S21
-rw-r--r--arch/s390/kernel/compat_wrapper.c2
-rw-r--r--arch/s390/kernel/crash_dump.c38
-rw-r--r--arch/s390/kernel/debug.c11
-rw-r--r--arch/s390/kernel/entry.S15
-rw-r--r--arch/s390/kernel/perf_cpum_sf.c2
-rw-r--r--arch/s390/kernel/setup.c28
-rw-r--r--arch/s390/kernel/smp.c159
-rw-r--r--arch/s390/kernel/suspend.c2
-rw-r--r--arch/s390/kernel/time.c6
-rw-r--r--arch/s390/kernel/traps.c4
12 files changed, 159 insertions, 144 deletions
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index c7d1b9d09..a2da259d9 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -23,15 +23,15 @@
int main(void)
{
- DEFINE(__THREAD_info, offsetof(struct task_struct, stack));
- DEFINE(__THREAD_ksp, offsetof(struct task_struct, thread.ksp));
- DEFINE(__THREAD_mm_segment, offsetof(struct task_struct, thread.mm_segment));
- BLANK();
+ DEFINE(__TASK_thread_info, offsetof(struct task_struct, stack));
+ DEFINE(__TASK_thread, offsetof(struct task_struct, thread));
DEFINE(__TASK_pid, offsetof(struct task_struct, pid));
BLANK();
- DEFINE(__THREAD_per_cause, offsetof(struct task_struct, thread.per_event.cause));
- DEFINE(__THREAD_per_address, offsetof(struct task_struct, thread.per_event.address));
- DEFINE(__THREAD_per_paid, offsetof(struct task_struct, thread.per_event.paid));
+ DEFINE(__THREAD_ksp, offsetof(struct thread_struct, ksp));
+ DEFINE(__THREAD_per_cause, offsetof(struct thread_struct, per_event.cause));
+ DEFINE(__THREAD_per_address, offsetof(struct thread_struct, per_event.address));
+ DEFINE(__THREAD_per_paid, offsetof(struct thread_struct, per_event.paid));
+ DEFINE(__THREAD_trap_tdb, offsetof(struct thread_struct, trap_tdb));
BLANK();
DEFINE(__TI_task, offsetof(struct thread_info, task));
DEFINE(__TI_flags, offsetof(struct thread_info, flags));
@@ -176,7 +176,6 @@ int main(void)
DEFINE(__LC_VDSO_PER_CPU, offsetof(struct _lowcore, vdso_per_cpu_data));
DEFINE(__LC_GMAP, offsetof(struct _lowcore, gmap));
DEFINE(__LC_PGM_TDB, offsetof(struct _lowcore, pgm_tdb));
- DEFINE(__THREAD_trap_tdb, offsetof(struct task_struct, thread.trap_tdb));
DEFINE(__GMAP_ASCE, offsetof(struct gmap, asce));
DEFINE(__SIE_PROG0C, offsetof(struct kvm_s390_sie_block, prog0c));
DEFINE(__SIE_PROG20, offsetof(struct kvm_s390_sie_block, prog20));
diff --git a/arch/s390/kernel/base.S b/arch/s390/kernel/base.S
index daed3fde4..326f717df 100644
--- a/arch/s390/kernel/base.S
+++ b/arch/s390/kernel/base.S
@@ -78,15 +78,20 @@ s390_base_pgm_handler_fn:
#
# Calls diag 308 subcode 1 and continues execution
#
-# The following conditions must be ensured before calling this function:
-# * Prefix register = 0
-# * Lowcore protection is disabled
-#
ENTRY(diag308_reset)
larl %r4,.Lctlregs # Save control registers
stctg %c0,%c15,0(%r4)
+ lg %r2,0(%r4) # Disable lowcore protection
+ nilh %r2,0xefff
+ larl %r4,.Lctlreg0
+ stg %r2,0(%r4)
+ lctlg %c0,%c0,0(%r4)
larl %r4,.Lfpctl # Floating point control register
stfpc 0(%r4)
+ larl %r4,.Lprefix # Save prefix register
+ stpx 0(%r4)
+ larl %r4,.Lprefix_zero # Set prefix register to 0
+ spx 0(%r4)
larl %r4,.Lcontinue_psw # Save PSW flags
epsw %r2,%r3
stm %r2,%r3,0(%r4)
@@ -106,6 +111,8 @@ ENTRY(diag308_reset)
lctlg %c0,%c15,0(%r4)
larl %r4,.Lfpctl # Restore floating point ctl register
lfpc 0(%r4)
+ larl %r4,.Lprefix # Restore prefix register
+ spx 0(%r4)
larl %r4,.Lcontinue_psw # Restore PSW flags
lpswe 0(%r4)
.Lcontinue:
@@ -122,10 +129,16 @@ ENTRY(diag308_reset)
.section .bss
.align 8
+.Lctlreg0:
+ .quad 0
.Lctlregs:
.rept 16
.quad 0
.endr
.Lfpctl:
.long 0
+.Lprefix:
+ .long 0
+.Lprefix_zero:
+ .long 0
.previous
diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c
index d7fa2f0f1..f8498dde6 100644
--- a/arch/s390/kernel/compat_wrapper.c
+++ b/arch/s390/kernel/compat_wrapper.c
@@ -202,7 +202,7 @@ COMPAT_SYSCALL_WRAP1(epoll_create1, int, flags);
COMPAT_SYSCALL_WRAP2(tkill, int, pid, int, sig);
COMPAT_SYSCALL_WRAP3(tgkill, int, tgid, int, pid, int, sig);
COMPAT_SYSCALL_WRAP5(perf_event_open, struct perf_event_attr __user *, attr_uptr, pid_t, pid, int, cpu, int, group_fd, unsigned long, flags);
-COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, int, tls_val);
+COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, unsigned long, tls);
COMPAT_SYSCALL_WRAP2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags);
COMPAT_SYSCALL_WRAP4(prlimit64, pid_t, pid, unsigned int, resource, const struct rlimit64 __user *, new_rlim, struct rlimit64 __user *, old_rlim);
COMPAT_SYSCALL_WRAP5(name_to_handle_at, int, dfd, const char __user *, name, struct file_handle __user *, handle, int __user *, mnt_id, int, flag);
diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index 49b74454d..0c6c01eb3 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -33,42 +33,18 @@ static struct memblock_type oldmem_type = {
};
#define for_each_dump_mem_range(i, nid, p_start, p_end, p_nid) \
- for (i = 0, __next_mem_range(&i, nid, &memblock.physmem, \
+ for (i = 0, __next_mem_range(&i, nid, MEMBLOCK_NONE, \
+ &memblock.physmem, \
&oldmem_type, p_start, \
p_end, p_nid); \
i != (u64)ULLONG_MAX; \
- __next_mem_range(&i, nid, &memblock.physmem, \
+ __next_mem_range(&i, nid, MEMBLOCK_NONE, &memblock.physmem,\
&oldmem_type, \
p_start, p_end, p_nid))
struct dump_save_areas dump_save_areas;
/*
- * Allocate and add a save area for a CPU
- */
-struct save_area_ext *dump_save_area_create(int cpu)
-{
- struct save_area_ext **save_areas, *save_area;
-
- save_area = kmalloc(sizeof(*save_area), GFP_KERNEL);
- if (!save_area)
- return NULL;
- if (cpu + 1 > dump_save_areas.count) {
- dump_save_areas.count = cpu + 1;
- save_areas = krealloc(dump_save_areas.areas,
- dump_save_areas.count * sizeof(void *),
- GFP_KERNEL | __GFP_ZERO);
- if (!save_areas) {
- kfree(save_area);
- return NULL;
- }
- dump_save_areas.areas = save_areas;
- }
- dump_save_areas.areas[cpu] = save_area;
- return save_area;
-}
-
-/*
* Return physical address for virtual address
*/
static inline void *load_real_addr(void *addr)
@@ -122,7 +98,7 @@ static ssize_t copy_oldmem_page_zfcpdump(char *buf, size_t csize,
{
int rc;
- if (src < sclp_get_hsa_size()) {
+ if (src < sclp.hsa_size) {
rc = memcpy_hsa(buf, src, csize, userbuf);
} else {
if (userbuf)
@@ -215,7 +191,7 @@ static int remap_oldmem_pfn_range_zfcpdump(struct vm_area_struct *vma,
unsigned long pfn,
unsigned long size, pgprot_t prot)
{
- unsigned long hsa_end = sclp_get_hsa_size();
+ unsigned long hsa_end = sclp.hsa_size;
unsigned long size_hsa;
if (pfn < hsa_end >> PAGE_SHIFT) {
@@ -258,7 +234,7 @@ int copy_from_oldmem(void *dest, void *src, size_t count)
return rc;
}
} else {
- unsigned long hsa_end = sclp_get_hsa_size();
+ unsigned long hsa_end = sclp.hsa_size;
if ((unsigned long) src < hsa_end) {
copied = min(count, hsa_end - (unsigned long) src);
rc = memcpy_hsa(dest, (unsigned long) src, copied, 0);
@@ -609,7 +585,7 @@ int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size)
if (elfcorehdr_addr != ELFCORE_ADDR_MAX)
return 0;
/* If we cannot get HSA size for zfcpdump return error */
- if (ipl_info.type == IPL_TYPE_FCP_DUMP && !sclp_get_hsa_size())
+ if (ipl_info.type == IPL_TYPE_FCP_DUMP && !sclp.hsa_size)
return -ENODEV;
/* For kdump, exclude previous crashkernel memory */
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index c1f21aca7..6fca0e464 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -1457,23 +1457,24 @@ int
debug_dflt_header_fn(debug_info_t * id, struct debug_view *view,
int area, debug_entry_t * entry, char *out_buf)
{
- struct timespec time_spec;
+ struct timespec64 time_spec;
char *except_str;
unsigned long caller;
int rc = 0;
unsigned int level;
level = entry->id.fields.level;
- stck_to_timespec(entry->id.stck, &time_spec);
+ stck_to_timespec64(entry->id.stck, &time_spec);
if (entry->id.fields.exception)
except_str = "*";
else
except_str = "-";
caller = ((unsigned long) entry->caller) & PSW_ADDR_INSN;
- rc += sprintf(out_buf, "%02i %011lu:%06lu %1u %1s %02i %p ",
- area, time_spec.tv_sec, time_spec.tv_nsec / 1000, level,
- except_str, entry->id.fields.cpuid, (void *) caller);
+ rc += sprintf(out_buf, "%02i %011lld:%06lu %1u %1s %02i %p ",
+ area, (long long)time_spec.tv_sec,
+ time_spec.tv_nsec / 1000, level, except_str,
+ entry->id.fields.cpuid, (void *)caller);
return rc;
}
EXPORT_SYMBOL(debug_dflt_header_fn);
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 99b44acbf..84062e7a7 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -178,17 +178,21 @@ _PIF_WORK = (_PIF_PER_TRAP)
*/
ENTRY(__switch_to)
stmg %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task
- stg %r15,__THREAD_ksp(%r2) # store kernel stack of prev
- lg %r4,__THREAD_info(%r2) # get thread_info of prev
- lg %r5,__THREAD_info(%r3) # get thread_info of next
+ lgr %r1,%r2
+ aghi %r1,__TASK_thread # thread_struct of prev task
+ lg %r4,__TASK_thread_info(%r2) # get thread_info of prev
+ lg %r5,__TASK_thread_info(%r3) # get thread_info of next
+ stg %r15,__THREAD_ksp(%r1) # store kernel stack of prev
+ lgr %r1,%r3
+ aghi %r1,__TASK_thread # thread_struct of next task
lgr %r15,%r5
aghi %r15,STACK_INIT # end of kernel stack of next
stg %r3,__LC_CURRENT # store task struct of next
stg %r5,__LC_THREAD_INFO # store thread info of next
stg %r15,__LC_KERNEL_STACK # store end of kernel stack
+ lg %r15,__THREAD_ksp(%r1) # load kernel stack of next
lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
mvc __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next
- lg %r15,__THREAD_ksp(%r3) # load kernel stack of next
lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
br %r14
@@ -417,6 +421,7 @@ ENTRY(pgm_check_handler)
LAST_BREAK %r14
lg %r15,__LC_KERNEL_STACK
lg %r14,__TI_task(%r12)
+ aghi %r14,__TASK_thread # pointer to thread_struct
lghi %r13,__LC_PGM_TDB
tm __LC_PGM_ILC+2,0x02 # check for transaction abort
jz 2f
@@ -1005,7 +1010,7 @@ ENTRY(sie64a)
.Lsie_gmap:
lg %r14,__SF_EMPTY(%r15) # get control block pointer
oi __SIE_PROG0C+3(%r14),1 # we are going into SIE now
- tm __SIE_PROG20+3(%r14),1 # last exit...
+ tm __SIE_PROG20+3(%r14),3 # last exit...
jnz .Lsie_done
LPP __SF_EMPTY(%r15) # set guest id
sie 0(%r14)
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index e6a1578fc..afe05bfb7 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -1572,7 +1572,7 @@ static int param_set_sfb_size(const char *val, const struct kernel_param *kp)
}
#define param_check_sfb_size(name, p) __param_check(name, p, void)
-static struct kernel_param_ops param_ops_sfb_size = {
+static const struct kernel_param_ops param_ops_sfb_size = {
.set = param_set_sfb_size,
.get = param_get_sfb_size,
};
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 7262fe438..ca070d260 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -128,9 +128,9 @@ __setup("condev=", condev_setup);
static void __init set_preferred_console(void)
{
if (MACHINE_IS_KVM) {
- if (sclp_has_vt220())
+ if (sclp.has_vt220)
add_preferred_console("ttyS", 1, NULL);
- else if (sclp_has_linemode())
+ else if (sclp.has_linemode)
add_preferred_console("ttyS", 0, NULL);
else
add_preferred_console("hvc", 0, NULL);
@@ -510,8 +510,8 @@ static void reserve_memory_end(void)
{
#ifdef CONFIG_CRASH_DUMP
if (ipl_info.type == IPL_TYPE_FCP_DUMP &&
- !OLDMEM_BASE && sclp_get_hsa_size()) {
- memory_end = sclp_get_hsa_size();
+ !OLDMEM_BASE && sclp.hsa_size) {
+ memory_end = sclp.hsa_size;
memory_end &= PAGE_MASK;
memory_end_set = 1;
}
@@ -576,7 +576,7 @@ static void __init reserve_crashkernel(void)
crash_base = low;
} else {
/* Find suitable area in free memory */
- low = max_t(unsigned long, crash_size, sclp_get_hsa_size());
+ low = max_t(unsigned long, crash_size, sclp.hsa_size);
high = crash_base ? crash_base + crash_size : ULONG_MAX;
if (crash_base && crash_base < low) {
@@ -640,19 +640,24 @@ static void __init check_initrd(void)
}
/*
- * Reserve all kernel text
+ * Reserve memory used for lowcore/command line/kernel image.
*/
static void __init reserve_kernel(void)
{
- unsigned long start_pfn;
- start_pfn = PFN_UP(__pa(&_end));
+ unsigned long start_pfn = PFN_UP(__pa(&_end));
+#ifdef CONFIG_DMA_API_DEBUG
/*
- * Reserve memory used for lowcore/command line/kernel image.
+ * DMA_API_DEBUG code stumbles over addresses from the
+ * range [_ehead, _stext]. Mark the memory as reserved
+ * so it is not used for CONFIG_DMA_API_DEBUG=y.
*/
+ memblock_reserve(0, PFN_PHYS(start_pfn));
+#else
memblock_reserve(0, (unsigned long)_ehead);
memblock_reserve((unsigned long)_stext, PFN_PHYS(start_pfn)
- (unsigned long)_stext);
+#endif
}
static void __init reserve_elfcorehdr(void)
@@ -863,6 +868,11 @@ void __init setup_arch(char **cmdline_p)
check_initrd();
reserve_crashkernel();
+ /*
+ * Be aware that smp_save_dump_cpus() triggers a system reset.
+ * Therefore CPU and device initialization should be done afterwards.
+ */
+ smp_save_dump_cpus();
setup_resources();
setup_vmcoreinfo();
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index efd2c1968..6f54c175f 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -31,6 +31,7 @@
#include <linux/cpu.h>
#include <linux/slab.h>
#include <linux/crash_dump.h>
+#include <linux/memblock.h>
#include <asm/asm-offsets.h>
#include <asm/switch_to.h>
#include <asm/facility.h>
@@ -69,7 +70,7 @@ struct pcpu {
u16 address; /* physical cpu address */
};
-static u8 boot_cpu_type;
+static u8 boot_core_type;
static struct pcpu pcpu_devices[NR_CPUS];
unsigned int smp_cpu_mt_shift;
@@ -531,15 +532,12 @@ EXPORT_SYMBOL(smp_ctl_clear_bit);
#ifdef CONFIG_CRASH_DUMP
-static inline void __smp_store_cpu_state(int cpu, u16 address, int is_boot_cpu)
+static void __smp_store_cpu_state(struct save_area_ext *sa_ext, u16 address,
+ int is_boot_cpu)
{
- void *lc = pcpu_devices[0].lowcore;
- struct save_area_ext *sa_ext;
+ void *lc = (void *)(unsigned long) store_prefix();
unsigned long vx_sa;
- sa_ext = dump_save_area_create(cpu);
- if (!sa_ext)
- panic("could not allocate memory for save area\n");
if (is_boot_cpu) {
/* Copy the registers of the boot CPU. */
copy_oldmem_page(1, (void *) &sa_ext->sa, sizeof(sa_ext->sa),
@@ -554,14 +552,33 @@ static inline void __smp_store_cpu_state(int cpu, u16 address, int is_boot_cpu)
if (!MACHINE_HAS_VX)
return;
/* Get the VX registers */
- vx_sa = __get_free_page(GFP_KERNEL);
+ vx_sa = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
if (!vx_sa)
panic("could not allocate memory for VX save area\n");
__pcpu_sigp_relax(address, SIGP_STORE_ADDITIONAL_STATUS, vx_sa, NULL);
memcpy(sa_ext->vx_regs, (void *) vx_sa, sizeof(sa_ext->vx_regs));
- free_page(vx_sa);
+ memblock_free(vx_sa, PAGE_SIZE);
}
+int smp_store_status(int cpu)
+{
+ unsigned long vx_sa;
+ struct pcpu *pcpu;
+
+ pcpu = pcpu_devices + cpu;
+ if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
+ 0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
+ return -EIO;
+ if (!MACHINE_HAS_VX)
+ return 0;
+ vx_sa = __pa(pcpu->lowcore->vector_save_area_addr);
+ __pcpu_sigp_relax(pcpu->address, SIGP_STORE_ADDITIONAL_STATUS,
+ vx_sa, NULL);
+ return 0;
+}
+
+#endif /* CONFIG_CRASH_DUMP */
+
/*
* Collect CPU state of the previous, crashed system.
* There are four cases:
@@ -589,10 +606,12 @@ static inline void __smp_store_cpu_state(int cpu, u16 address, int is_boot_cpu)
* old system. The ELF sections are picked up by the crash_dump code
* via elfcorehdr_addr.
*/
-static void __init smp_store_cpu_states(struct sclp_cpu_info *info)
+void __init smp_save_dump_cpus(void)
{
- unsigned int cpu, address, i, j;
- int is_boot_cpu;
+#ifdef CONFIG_CRASH_DUMP
+ int addr, cpu, boot_cpu_addr, max_cpu_addr;
+ struct save_area_ext *sa_ext;
+ bool is_boot_cpu;
if (is_kdump_kernel())
/* Previous system stored the CPU states. Nothing to do. */
@@ -601,43 +620,37 @@ static void __init smp_store_cpu_states(struct sclp_cpu_info *info)
/* No previous system present, normal boot. */
return;
/* Set multi-threading state to the previous system. */
- pcpu_set_smt(sclp_get_mtid_prev());
- /* Collect CPU states. */
- cpu = 0;
- for (i = 0; i < info->configured; i++) {
- /* Skip CPUs with different CPU type. */
- if (info->has_cpu_type && info->cpu[i].type != boot_cpu_type)
+ pcpu_set_smt(sclp.mtid_prev);
+ max_cpu_addr = SCLP_MAX_CORES << sclp.mtid_prev;
+ for (cpu = 0, addr = 0; addr <= max_cpu_addr; addr++) {
+ if (__pcpu_sigp_relax(addr, SIGP_SENSE, 0, NULL) ==
+ SIGP_CC_NOT_OPERATIONAL)
continue;
- for (j = 0; j <= smp_cpu_mtid; j++, cpu++) {
- address = (info->cpu[i].core_id << smp_cpu_mt_shift) + j;
- is_boot_cpu = (address == pcpu_devices[0].address);
- if (is_boot_cpu && !OLDMEM_BASE)
- /* Skip boot CPU for standard zfcp dump. */
- continue;
- /* Get state for this CPu. */
- __smp_store_cpu_state(cpu, address, is_boot_cpu);
- }
+ cpu += 1;
}
-}
-
-int smp_store_status(int cpu)
-{
- unsigned long vx_sa;
- struct pcpu *pcpu;
-
- pcpu = pcpu_devices + cpu;
- if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
- 0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
- return -EIO;
- if (!MACHINE_HAS_VX)
- return 0;
- vx_sa = __pa(pcpu->lowcore->vector_save_area_addr);
- __pcpu_sigp_relax(pcpu->address, SIGP_STORE_ADDITIONAL_STATUS,
- vx_sa, NULL);
- return 0;
-}
-
+ dump_save_areas.areas = (void *)memblock_alloc(sizeof(void *) * cpu, 8);
+ dump_save_areas.count = cpu;
+ boot_cpu_addr = stap();
+ for (cpu = 0, addr = 0; addr <= max_cpu_addr; addr++) {
+ if (__pcpu_sigp_relax(addr, SIGP_SENSE, 0, NULL) ==
+ SIGP_CC_NOT_OPERATIONAL)
+ continue;
+ sa_ext = (void *) memblock_alloc(sizeof(*sa_ext), 8);
+ dump_save_areas.areas[cpu] = sa_ext;
+ if (!sa_ext)
+ panic("could not allocate memory for save area\n");
+ is_boot_cpu = (addr == boot_cpu_addr);
+ cpu += 1;
+ if (is_boot_cpu && !OLDMEM_BASE)
+ /* Skip boot CPU for standard zfcp dump. */
+ continue;
+ /* Get state for this CPU. */
+ __smp_store_cpu_state(sa_ext, addr, is_boot_cpu);
+ }
+ diag308_reset();
+ pcpu_set_smt(0);
#endif /* CONFIG_CRASH_DUMP */
+}
void smp_cpu_set_polarization(int cpu, int val)
{
@@ -649,21 +662,22 @@ int smp_cpu_get_polarization(int cpu)
return pcpu_devices[cpu].polarization;
}
-static struct sclp_cpu_info *smp_get_cpu_info(void)
+static struct sclp_core_info *smp_get_core_info(void)
{
static int use_sigp_detection;
- struct sclp_cpu_info *info;
+ struct sclp_core_info *info;
int address;
info = kzalloc(sizeof(*info), GFP_KERNEL);
- if (info && (use_sigp_detection || sclp_get_cpu_info(info))) {
+ if (info && (use_sigp_detection || sclp_get_core_info(info))) {
use_sigp_detection = 1;
- for (address = 0; address <= MAX_CPU_ADDRESS;
+ for (address = 0;
+ address < (SCLP_MAX_CORES << smp_cpu_mt_shift);
address += (1U << smp_cpu_mt_shift)) {
if (__pcpu_sigp_relax(address, SIGP_SENSE, 0, NULL) ==
SIGP_CC_NOT_OPERATIONAL)
continue;
- info->cpu[info->configured].core_id =
+ info->core[info->configured].core_id =
address >> smp_cpu_mt_shift;
info->configured++;
}
@@ -674,7 +688,7 @@ static struct sclp_cpu_info *smp_get_cpu_info(void)
static int smp_add_present_cpu(int cpu);
-static int __smp_rescan_cpus(struct sclp_cpu_info *info, int sysfs_add)
+static int __smp_rescan_cpus(struct sclp_core_info *info, int sysfs_add)
{
struct pcpu *pcpu;
cpumask_t avail;
@@ -685,9 +699,9 @@ static int __smp_rescan_cpus(struct sclp_cpu_info *info, int sysfs_add)
cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask);
cpu = cpumask_first(&avail);
for (i = 0; (i < info->combined) && (cpu < nr_cpu_ids); i++) {
- if (info->has_cpu_type && info->cpu[i].type != boot_cpu_type)
+ if (sclp.has_core_type && info->core[i].type != boot_core_type)
continue;
- address = info->cpu[i].core_id << smp_cpu_mt_shift;
+ address = info->core[i].core_id << smp_cpu_mt_shift;
for (j = 0; j <= smp_cpu_mtid; j++) {
if (pcpu_find_address(cpu_present_mask, address + j))
continue;
@@ -713,41 +727,37 @@ static int __smp_rescan_cpus(struct sclp_cpu_info *info, int sysfs_add)
static void __init smp_detect_cpus(void)
{
unsigned int cpu, mtid, c_cpus, s_cpus;
- struct sclp_cpu_info *info;
+ struct sclp_core_info *info;
u16 address;
/* Get CPU information */
- info = smp_get_cpu_info();
+ info = smp_get_core_info();
if (!info)
panic("smp_detect_cpus failed to allocate memory\n");
/* Find boot CPU type */
- if (info->has_cpu_type) {
+ if (sclp.has_core_type) {
address = stap();
for (cpu = 0; cpu < info->combined; cpu++)
- if (info->cpu[cpu].core_id == address) {
+ if (info->core[cpu].core_id == address) {
/* The boot cpu dictates the cpu type. */
- boot_cpu_type = info->cpu[cpu].type;
+ boot_core_type = info->core[cpu].type;
break;
}
if (cpu >= info->combined)
panic("Could not find boot CPU type");
}
-#ifdef CONFIG_CRASH_DUMP
- /* Collect CPU state of previous system */
- smp_store_cpu_states(info);
-#endif
-
/* Set multi-threading state for the current system */
- mtid = sclp_get_mtid(boot_cpu_type);
+ mtid = boot_core_type ? sclp.mtid : sclp.mtid_cp;
mtid = (mtid < smp_max_threads) ? mtid : smp_max_threads - 1;
pcpu_set_smt(mtid);
/* Print number of CPUs */
c_cpus = s_cpus = 0;
for (cpu = 0; cpu < info->combined; cpu++) {
- if (info->has_cpu_type && info->cpu[cpu].type != boot_cpu_type)
+ if (sclp.has_core_type &&
+ info->core[cpu].type != boot_core_type)
continue;
if (cpu < info->configured)
c_cpus += smp_cpu_mtid + 1;
@@ -880,12 +890,13 @@ void __noreturn cpu_die(void)
void __init smp_fill_possible_mask(void)
{
- unsigned int possible, sclp, cpu;
+ unsigned int possible, sclp_max, cpu;
- sclp = min(smp_max_threads, sclp_get_mtid_max() + 1);
- sclp = sclp_get_max_cpu()*sclp ?: nr_cpu_ids;
+ sclp_max = max(sclp.mtid, sclp.mtid_cp) + 1;
+ sclp_max = min(smp_max_threads, sclp_max);
+ sclp_max = sclp.max_cores * sclp_max ?: nr_cpu_ids;
possible = setup_possible_cpus ?: nr_cpu_ids;
- possible = min(possible, sclp);
+ possible = min(possible, sclp_max);
for (cpu = 0; cpu < possible && cpu < nr_cpu_ids; cpu++)
set_cpu_possible(cpu, true);
}
@@ -976,7 +987,7 @@ static ssize_t cpu_configure_store(struct device *dev,
case 0:
if (pcpu->state != CPU_STATE_CONFIGURED)
break;
- rc = sclp_cpu_deconfigure(pcpu->address >> smp_cpu_mt_shift);
+ rc = sclp_core_deconfigure(pcpu->address >> smp_cpu_mt_shift);
if (rc)
break;
for (i = 0; i <= smp_cpu_mtid; i++) {
@@ -991,7 +1002,7 @@ static ssize_t cpu_configure_store(struct device *dev,
case 1:
if (pcpu->state != CPU_STATE_STANDBY)
break;
- rc = sclp_cpu_configure(pcpu->address >> smp_cpu_mt_shift);
+ rc = sclp_core_configure(pcpu->address >> smp_cpu_mt_shift);
if (rc)
break;
for (i = 0; i <= smp_cpu_mtid; i++) {
@@ -1106,10 +1117,10 @@ out:
int __ref smp_rescan_cpus(void)
{
- struct sclp_cpu_info *info;
+ struct sclp_core_info *info;
int nr;
- info = smp_get_cpu_info();
+ info = smp_get_core_info();
if (!info)
return -ENOMEM;
get_online_cpus();
diff --git a/arch/s390/kernel/suspend.c b/arch/s390/kernel/suspend.c
index d3236c9e2..39e2f41b6 100644
--- a/arch/s390/kernel/suspend.c
+++ b/arch/s390/kernel/suspend.c
@@ -9,10 +9,10 @@
#include <linux/pfn.h>
#include <linux/suspend.h>
#include <linux/mm.h>
+#include <linux/pci.h>
#include <asm/ctl_reg.h>
#include <asm/ipl.h>
#include <asm/cio.h>
-#include <asm/pci.h>
#include <asm/sections.h>
#include "entry.h"
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 170ddd201..9e733d965 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -76,7 +76,7 @@ unsigned long long monotonic_clock(void)
}
EXPORT_SYMBOL(monotonic_clock);
-void tod_to_timeval(__u64 todval, struct timespec *xt)
+void tod_to_timeval(__u64 todval, struct timespec64 *xt)
{
unsigned long long sec;
@@ -181,12 +181,12 @@ static void timing_alert_interrupt(struct ext_code ext_code,
static void etr_reset(void);
static void stp_reset(void);
-void read_persistent_clock(struct timespec *ts)
+void read_persistent_clock64(struct timespec64 *ts)
{
tod_to_timeval(get_tod_clock() - TOD_UNIX_EPOCH, ts);
}
-void read_boot_clock(struct timespec *ts)
+void read_boot_clock64(struct timespec64 *ts)
{
tod_to_timeval(sched_clock_base_cc - TOD_UNIX_EPOCH, ts);
}
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 4d96c9f53..7bea81d8a 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -259,7 +259,7 @@ void vector_exception(struct pt_regs *regs)
}
/* get vector interrupt code from fpc */
- asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
+ asm volatile("stfpc %0" : "=Q" (current->thread.fp_regs.fpc));
vic = (current->thread.fp_regs.fpc & 0xf00) >> 8;
switch (vic) {
case 1: /* invalid vector operation */
@@ -297,7 +297,7 @@ void data_exception(struct pt_regs *regs)
location = get_trap_ip(regs);
- asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
+ asm volatile("stfpc %0" : "=Q" (current->thread.fp_regs.fpc));
/* Check for vector register enablement */
if (MACHINE_HAS_VX && !current->thread.vxrs &&
(current->thread.fp_regs.fpc & FPC_DXC_MASK) == 0xfe00) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-17 06:04:34 +0000