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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /arch/s390/kernel
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r--arch/s390/kernel/Makefile8
-rw-r--r--arch/s390/kernel/asm-offsets.c176
-rw-r--r--arch/s390/kernel/compat_wrapper.c1
-rw-r--r--arch/s390/kernel/crash_dump.c452
-rw-r--r--arch/s390/kernel/debug.c2
-rw-r--r--arch/s390/kernel/dis.c4
-rw-r--r--arch/s390/kernel/dumpstack.c9
-rw-r--r--arch/s390/kernel/early.c17
-rw-r--r--arch/s390/kernel/entry.S2
-rw-r--r--arch/s390/kernel/ftrace.c2
-rw-r--r--arch/s390/kernel/head.S47
-rw-r--r--arch/s390/kernel/head64.S2
-rw-r--r--arch/s390/kernel/ipl.c25
-rw-r--r--arch/s390/kernel/kprobes.c16
-rw-r--r--arch/s390/kernel/machine_kexec.c110
-rw-r--r--arch/s390/kernel/module.c22
-rw-r--r--arch/s390/kernel/os_info.c7
-rw-r--r--arch/s390/kernel/perf_event.c20
-rw-r--r--arch/s390/kernel/process.c12
-rw-r--r--arch/s390/kernel/processor.c6
-rw-r--r--arch/s390/kernel/ptrace.c6
-rw-r--r--arch/s390/kernel/reipl.S94
-rw-r--r--arch/s390/kernel/sclp.c65
-rw-r--r--arch/s390/kernel/setup.c48
-rw-r--r--arch/s390/kernel/signal.c13
-rw-r--r--arch/s390/kernel/smp.c159
-rw-r--r--arch/s390/kernel/stacktrace.c56
-rw-r--r--arch/s390/kernel/syscalls.S1
-rw-r--r--arch/s390/kernel/sysinfo.c20
-rw-r--r--arch/s390/kernel/trace.c3
-rw-r--r--arch/s390/kernel/traps.c14
-rw-r--r--arch/s390/kernel/vdso.c17
-rw-r--r--arch/s390/kernel/vdso32/Makefile2
-rw-r--r--arch/s390/kernel/vdso32/getcpu.S43
-rw-r--r--arch/s390/kernel/vdso32/vdso32.lds.S1
-rw-r--r--arch/s390/kernel/vdso64/Makefile2
-rw-r--r--arch/s390/kernel/vdso64/getcpu.S42
-rw-r--r--arch/s390/kernel/vdso64/vdso64.lds.S1
38 files changed, 815 insertions, 712 deletions
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index dc167a23b..2f5586ab8 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -34,8 +34,10 @@ CFLAGS_sysinfo.o += -w
#
CFLAGS_REMOVE_sclp.o = $(CC_FLAGS_FTRACE)
ifneq ($(CC_FLAGS_MARCH),-march=z900)
-CFLAGS_REMOVE_sclp.o += $(CC_FLAGS_MARCH)
-CFLAGS_sclp.o += -march=z900
+CFLAGS_REMOVE_sclp.o += $(CC_FLAGS_MARCH)
+CFLAGS_sclp.o += -march=z900
+AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH)
+AFLAGS_head.o += -march=z900
endif
GCOV_PROFILE_sclp.o := n
@@ -50,7 +52,7 @@ extra-y += head.o head64.o vmlinux.lds
obj-$(CONFIG_MODULES) += s390_ksyms.o module.o
obj-$(CONFIG_SMP) += smp.o
-obj-$(CONFIG_SCHED_BOOK) += topology.o
+obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o
obj-$(CONFIG_HIBERNATION) += suspend.o swsusp.o
obj-$(CONFIG_AUDIT) += audit.o
compat-obj-$(CONFIG_AUDIT) += compat_audit.o
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index dc6c9c604..53bbc9e8b 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -80,6 +80,8 @@ int main(void)
OFFSET(__VDSO_TK_SHIFT, vdso_data, tk_shift);
OFFSET(__VDSO_ECTG_BASE, vdso_per_cpu_data, ectg_timer_base);
OFFSET(__VDSO_ECTG_USER, vdso_per_cpu_data, ectg_user_time);
+ OFFSET(__VDSO_CPU_NR, vdso_per_cpu_data, cpu_nr);
+ OFFSET(__VDSO_NODE_ID, vdso_per_cpu_data, node_id);
BLANK();
/* constants used by the vdso */
DEFINE(__CLOCK_REALTIME, CLOCK_REALTIME);
@@ -97,96 +99,96 @@ int main(void)
OFFSET(__TIMER_IDLE_EXIT, s390_idle_data, timer_idle_exit);
BLANK();
/* hardware defined lowcore locations 0x000 - 0x1ff */
- OFFSET(__LC_EXT_PARAMS, _lowcore, ext_params);
- OFFSET(__LC_EXT_CPU_ADDR, _lowcore, ext_cpu_addr);
- OFFSET(__LC_EXT_INT_CODE, _lowcore, ext_int_code);
- OFFSET(__LC_SVC_ILC, _lowcore, svc_ilc);
- OFFSET(__LC_SVC_INT_CODE, _lowcore, svc_code);
- OFFSET(__LC_PGM_ILC, _lowcore, pgm_ilc);
- OFFSET(__LC_PGM_INT_CODE, _lowcore, pgm_code);
- OFFSET(__LC_DATA_EXC_CODE, _lowcore, data_exc_code);
- OFFSET(__LC_MON_CLASS_NR, _lowcore, mon_class_num);
- OFFSET(__LC_PER_CODE, _lowcore, per_code);
- OFFSET(__LC_PER_ATMID, _lowcore, per_atmid);
- OFFSET(__LC_PER_ADDRESS, _lowcore, per_address);
- OFFSET(__LC_EXC_ACCESS_ID, _lowcore, exc_access_id);
- OFFSET(__LC_PER_ACCESS_ID, _lowcore, per_access_id);
- OFFSET(__LC_OP_ACCESS_ID, _lowcore, op_access_id);
- OFFSET(__LC_AR_MODE_ID, _lowcore, ar_mode_id);
- OFFSET(__LC_TRANS_EXC_CODE, _lowcore, trans_exc_code);
- OFFSET(__LC_MON_CODE, _lowcore, monitor_code);
- OFFSET(__LC_SUBCHANNEL_ID, _lowcore, subchannel_id);
- OFFSET(__LC_SUBCHANNEL_NR, _lowcore, subchannel_nr);
- OFFSET(__LC_IO_INT_PARM, _lowcore, io_int_parm);
- OFFSET(__LC_IO_INT_WORD, _lowcore, io_int_word);
- OFFSET(__LC_STFL_FAC_LIST, _lowcore, stfl_fac_list);
- OFFSET(__LC_MCCK_CODE, _lowcore, mcck_interruption_code);
- OFFSET(__LC_MCCK_FAIL_STOR_ADDR, _lowcore, failing_storage_address);
- OFFSET(__LC_LAST_BREAK, _lowcore, breaking_event_addr);
- OFFSET(__LC_RST_OLD_PSW, _lowcore, restart_old_psw);
- OFFSET(__LC_EXT_OLD_PSW, _lowcore, external_old_psw);
- OFFSET(__LC_SVC_OLD_PSW, _lowcore, svc_old_psw);
- OFFSET(__LC_PGM_OLD_PSW, _lowcore, program_old_psw);
- OFFSET(__LC_MCK_OLD_PSW, _lowcore, mcck_old_psw);
- OFFSET(__LC_IO_OLD_PSW, _lowcore, io_old_psw);
- OFFSET(__LC_RST_NEW_PSW, _lowcore, restart_psw);
- OFFSET(__LC_EXT_NEW_PSW, _lowcore, external_new_psw);
- OFFSET(__LC_SVC_NEW_PSW, _lowcore, svc_new_psw);
- OFFSET(__LC_PGM_NEW_PSW, _lowcore, program_new_psw);
- OFFSET(__LC_MCK_NEW_PSW, _lowcore, mcck_new_psw);
- OFFSET(__LC_IO_NEW_PSW, _lowcore, io_new_psw);
+ OFFSET(__LC_EXT_PARAMS, lowcore, ext_params);
+ OFFSET(__LC_EXT_CPU_ADDR, lowcore, ext_cpu_addr);
+ OFFSET(__LC_EXT_INT_CODE, lowcore, ext_int_code);
+ OFFSET(__LC_SVC_ILC, lowcore, svc_ilc);
+ OFFSET(__LC_SVC_INT_CODE, lowcore, svc_code);
+ OFFSET(__LC_PGM_ILC, lowcore, pgm_ilc);
+ OFFSET(__LC_PGM_INT_CODE, lowcore, pgm_code);
+ OFFSET(__LC_DATA_EXC_CODE, lowcore, data_exc_code);
+ OFFSET(__LC_MON_CLASS_NR, lowcore, mon_class_num);
+ OFFSET(__LC_PER_CODE, lowcore, per_code);
+ OFFSET(__LC_PER_ATMID, lowcore, per_atmid);
+ OFFSET(__LC_PER_ADDRESS, lowcore, per_address);
+ OFFSET(__LC_EXC_ACCESS_ID, lowcore, exc_access_id);
+ OFFSET(__LC_PER_ACCESS_ID, lowcore, per_access_id);
+ OFFSET(__LC_OP_ACCESS_ID, lowcore, op_access_id);
+ OFFSET(__LC_AR_MODE_ID, lowcore, ar_mode_id);
+ OFFSET(__LC_TRANS_EXC_CODE, lowcore, trans_exc_code);
+ OFFSET(__LC_MON_CODE, lowcore, monitor_code);
+ OFFSET(__LC_SUBCHANNEL_ID, lowcore, subchannel_id);
+ OFFSET(__LC_SUBCHANNEL_NR, lowcore, subchannel_nr);
+ OFFSET(__LC_IO_INT_PARM, lowcore, io_int_parm);
+ OFFSET(__LC_IO_INT_WORD, lowcore, io_int_word);
+ OFFSET(__LC_STFL_FAC_LIST, lowcore, stfl_fac_list);
+ OFFSET(__LC_STFLE_FAC_LIST, lowcore, stfle_fac_list);
+ OFFSET(__LC_MCCK_CODE, lowcore, mcck_interruption_code);
+ OFFSET(__LC_MCCK_FAIL_STOR_ADDR, lowcore, failing_storage_address);
+ OFFSET(__LC_LAST_BREAK, lowcore, breaking_event_addr);
+ OFFSET(__LC_RST_OLD_PSW, lowcore, restart_old_psw);
+ OFFSET(__LC_EXT_OLD_PSW, lowcore, external_old_psw);
+ OFFSET(__LC_SVC_OLD_PSW, lowcore, svc_old_psw);
+ OFFSET(__LC_PGM_OLD_PSW, lowcore, program_old_psw);
+ OFFSET(__LC_MCK_OLD_PSW, lowcore, mcck_old_psw);
+ OFFSET(__LC_IO_OLD_PSW, lowcore, io_old_psw);
+ OFFSET(__LC_RST_NEW_PSW, lowcore, restart_psw);
+ OFFSET(__LC_EXT_NEW_PSW, lowcore, external_new_psw);
+ OFFSET(__LC_SVC_NEW_PSW, lowcore, svc_new_psw);
+ OFFSET(__LC_PGM_NEW_PSW, lowcore, program_new_psw);
+ OFFSET(__LC_MCK_NEW_PSW, lowcore, mcck_new_psw);
+ OFFSET(__LC_IO_NEW_PSW, lowcore, io_new_psw);
/* software defined lowcore locations 0x200 - 0xdff*/
- OFFSET(__LC_SAVE_AREA_SYNC, _lowcore, save_area_sync);
- OFFSET(__LC_SAVE_AREA_ASYNC, _lowcore, save_area_async);
- OFFSET(__LC_SAVE_AREA_RESTART, _lowcore, save_area_restart);
- OFFSET(__LC_CPU_FLAGS, _lowcore, cpu_flags);
- OFFSET(__LC_RETURN_PSW, _lowcore, return_psw);
- OFFSET(__LC_RETURN_MCCK_PSW, _lowcore, return_mcck_psw);
- OFFSET(__LC_SYNC_ENTER_TIMER, _lowcore, sync_enter_timer);
- OFFSET(__LC_ASYNC_ENTER_TIMER, _lowcore, async_enter_timer);
- OFFSET(__LC_MCCK_ENTER_TIMER, _lowcore, mcck_enter_timer);
- OFFSET(__LC_EXIT_TIMER, _lowcore, exit_timer);
- OFFSET(__LC_USER_TIMER, _lowcore, user_timer);
- OFFSET(__LC_SYSTEM_TIMER, _lowcore, system_timer);
- OFFSET(__LC_STEAL_TIMER, _lowcore, steal_timer);
- OFFSET(__LC_LAST_UPDATE_TIMER, _lowcore, last_update_timer);
- OFFSET(__LC_LAST_UPDATE_CLOCK, _lowcore, last_update_clock);
- OFFSET(__LC_INT_CLOCK, _lowcore, int_clock);
- OFFSET(__LC_MCCK_CLOCK, _lowcore, mcck_clock);
- OFFSET(__LC_CURRENT, _lowcore, current_task);
- OFFSET(__LC_THREAD_INFO, _lowcore, thread_info);
- OFFSET(__LC_KERNEL_STACK, _lowcore, kernel_stack);
- OFFSET(__LC_ASYNC_STACK, _lowcore, async_stack);
- OFFSET(__LC_PANIC_STACK, _lowcore, panic_stack);
- OFFSET(__LC_RESTART_STACK, _lowcore, restart_stack);
- OFFSET(__LC_RESTART_FN, _lowcore, restart_fn);
- OFFSET(__LC_RESTART_DATA, _lowcore, restart_data);
- OFFSET(__LC_RESTART_SOURCE, _lowcore, restart_source);
- OFFSET(__LC_USER_ASCE, _lowcore, user_asce);
- OFFSET(__LC_LPP, _lowcore, lpp);
- OFFSET(__LC_CURRENT_PID, _lowcore, current_pid);
- OFFSET(__LC_PERCPU_OFFSET, _lowcore, percpu_offset);
- OFFSET(__LC_VDSO_PER_CPU, _lowcore, vdso_per_cpu_data);
- OFFSET(__LC_MACHINE_FLAGS, _lowcore, machine_flags);
- OFFSET(__LC_GMAP, _lowcore, gmap);
- OFFSET(__LC_PASTE, _lowcore, paste);
+ OFFSET(__LC_SAVE_AREA_SYNC, lowcore, save_area_sync);
+ OFFSET(__LC_SAVE_AREA_ASYNC, lowcore, save_area_async);
+ OFFSET(__LC_SAVE_AREA_RESTART, lowcore, save_area_restart);
+ OFFSET(__LC_CPU_FLAGS, lowcore, cpu_flags);
+ OFFSET(__LC_RETURN_PSW, lowcore, return_psw);
+ OFFSET(__LC_RETURN_MCCK_PSW, lowcore, return_mcck_psw);
+ OFFSET(__LC_SYNC_ENTER_TIMER, lowcore, sync_enter_timer);
+ OFFSET(__LC_ASYNC_ENTER_TIMER, lowcore, async_enter_timer);
+ OFFSET(__LC_MCCK_ENTER_TIMER, lowcore, mcck_enter_timer);
+ OFFSET(__LC_EXIT_TIMER, lowcore, exit_timer);
+ OFFSET(__LC_USER_TIMER, lowcore, user_timer);
+ OFFSET(__LC_SYSTEM_TIMER, lowcore, system_timer);
+ OFFSET(__LC_STEAL_TIMER, lowcore, steal_timer);
+ OFFSET(__LC_LAST_UPDATE_TIMER, lowcore, last_update_timer);
+ OFFSET(__LC_LAST_UPDATE_CLOCK, lowcore, last_update_clock);
+ OFFSET(__LC_INT_CLOCK, lowcore, int_clock);
+ OFFSET(__LC_MCCK_CLOCK, lowcore, mcck_clock);
+ OFFSET(__LC_CURRENT, lowcore, current_task);
+ OFFSET(__LC_THREAD_INFO, lowcore, thread_info);
+ OFFSET(__LC_KERNEL_STACK, lowcore, kernel_stack);
+ OFFSET(__LC_ASYNC_STACK, lowcore, async_stack);
+ OFFSET(__LC_PANIC_STACK, lowcore, panic_stack);
+ OFFSET(__LC_RESTART_STACK, lowcore, restart_stack);
+ OFFSET(__LC_RESTART_FN, lowcore, restart_fn);
+ OFFSET(__LC_RESTART_DATA, lowcore, restart_data);
+ OFFSET(__LC_RESTART_SOURCE, lowcore, restart_source);
+ OFFSET(__LC_USER_ASCE, lowcore, user_asce);
+ OFFSET(__LC_LPP, lowcore, lpp);
+ OFFSET(__LC_CURRENT_PID, lowcore, current_pid);
+ OFFSET(__LC_PERCPU_OFFSET, lowcore, percpu_offset);
+ OFFSET(__LC_VDSO_PER_CPU, lowcore, vdso_per_cpu_data);
+ OFFSET(__LC_MACHINE_FLAGS, lowcore, machine_flags);
+ OFFSET(__LC_GMAP, lowcore, gmap);
+ OFFSET(__LC_PASTE, lowcore, paste);
/* software defined ABI-relevant lowcore locations 0xe00 - 0xe20 */
- OFFSET(__LC_DUMP_REIPL, _lowcore, ipib);
+ OFFSET(__LC_DUMP_REIPL, lowcore, ipib);
/* hardware defined lowcore locations 0x1000 - 0x18ff */
- OFFSET(__LC_VX_SAVE_AREA_ADDR, _lowcore, vector_save_area_addr);
- OFFSET(__LC_EXT_PARAMS2, _lowcore, ext_params2);
- OFFSET(SAVE_AREA_BASE, _lowcore, floating_pt_save_area);
- OFFSET(__LC_FPREGS_SAVE_AREA, _lowcore, floating_pt_save_area);
- OFFSET(__LC_GPREGS_SAVE_AREA, _lowcore, gpregs_save_area);
- OFFSET(__LC_PSW_SAVE_AREA, _lowcore, psw_save_area);
- OFFSET(__LC_PREFIX_SAVE_AREA, _lowcore, prefixreg_save_area);
- OFFSET(__LC_FP_CREG_SAVE_AREA, _lowcore, fpt_creg_save_area);
- OFFSET(__LC_TOD_PROGREG_SAVE_AREA, _lowcore, tod_progreg_save_area);
- OFFSET(__LC_CPU_TIMER_SAVE_AREA, _lowcore, cpu_timer_save_area);
- OFFSET(__LC_CLOCK_COMP_SAVE_AREA, _lowcore, clock_comp_save_area);
- OFFSET(__LC_AREGS_SAVE_AREA, _lowcore, access_regs_save_area);
- OFFSET(__LC_CREGS_SAVE_AREA, _lowcore, cregs_save_area);
- OFFSET(__LC_PGM_TDB, _lowcore, pgm_tdb);
+ OFFSET(__LC_VX_SAVE_AREA_ADDR, lowcore, vector_save_area_addr);
+ OFFSET(__LC_EXT_PARAMS2, lowcore, ext_params2);
+ OFFSET(__LC_FPREGS_SAVE_AREA, lowcore, floating_pt_save_area);
+ OFFSET(__LC_GPREGS_SAVE_AREA, lowcore, gpregs_save_area);
+ OFFSET(__LC_PSW_SAVE_AREA, lowcore, psw_save_area);
+ OFFSET(__LC_PREFIX_SAVE_AREA, lowcore, prefixreg_save_area);
+ OFFSET(__LC_FP_CREG_SAVE_AREA, lowcore, fpt_creg_save_area);
+ OFFSET(__LC_TOD_PROGREG_SAVE_AREA, lowcore, tod_progreg_save_area);
+ OFFSET(__LC_CPU_TIMER_SAVE_AREA, lowcore, cpu_timer_save_area);
+ OFFSET(__LC_CLOCK_COMP_SAVE_AREA, lowcore, clock_comp_save_area);
+ OFFSET(__LC_AREGS_SAVE_AREA, lowcore, access_regs_save_area);
+ OFFSET(__LC_CREGS_SAVE_AREA, lowcore, cregs_save_area);
+ OFFSET(__LC_PGM_TDB, lowcore, pgm_tdb);
BLANK();
/* gmap/sie offsets */
OFFSET(__GMAP_ASCE, gmap, asce);
diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c
index fac4eedde..ae2cda5ee 100644
--- a/arch/s390/kernel/compat_wrapper.c
+++ b/arch/s390/kernel/compat_wrapper.c
@@ -177,3 +177,4 @@ COMPAT_SYSCALL_WRAP3(getsockname, int, fd, struct sockaddr __user *, usockaddr,
COMPAT_SYSCALL_WRAP3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
COMPAT_SYSCALL_WRAP6(sendto, int, fd, void __user *, buff, size_t, len, unsigned int, flags, struct sockaddr __user *, addr, int, addr_len);
COMPAT_SYSCALL_WRAP3(mlock2, unsigned long, start, size_t, len, int, flags);
+COMPAT_SYSCALL_WRAP6(copy_file_range, int, fd_in, loff_t __user *, off_in, int, fd_out, loff_t __user *, off_out, size_t, len, unsigned int, flags);
diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index 171e09bb8..3986c9f62 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -13,6 +13,7 @@
#include <linux/slab.h>
#include <linux/bootmem.h>
#include <linux/elf.h>
+#include <asm/asm-offsets.h>
#include <linux/memblock.h>
#include <asm/os_info.h>
#include <asm/elf.h>
@@ -32,7 +33,82 @@ static struct memblock_type oldmem_type = {
.regions = &oldmem_region,
};
-struct dump_save_areas dump_save_areas;
+struct save_area {
+ struct list_head list;
+ u64 psw[2];
+ u64 ctrs[16];
+ u64 gprs[16];
+ u32 acrs[16];
+ u64 fprs[16];
+ u32 fpc;
+ u32 prefix;
+ u64 todpreg;
+ u64 timer;
+ u64 todcmp;
+ u64 vxrs_low[16];
+ __vector128 vxrs_high[16];
+};
+
+static LIST_HEAD(dump_save_areas);
+
+/*
+ * Allocate a save area
+ */
+struct save_area * __init save_area_alloc(bool is_boot_cpu)
+{
+ struct save_area *sa;
+
+ sa = (void *) memblock_alloc(sizeof(*sa), 8);
+ if (is_boot_cpu)
+ list_add(&sa->list, &dump_save_areas);
+ else
+ list_add_tail(&sa->list, &dump_save_areas);
+ return sa;
+}
+
+/*
+ * Return the address of the save area for the boot CPU
+ */
+struct save_area * __init save_area_boot_cpu(void)
+{
+ if (list_empty(&dump_save_areas))
+ return NULL;
+ return list_first_entry(&dump_save_areas, struct save_area, list);
+}
+
+/*
+ * Copy CPU registers into the save area
+ */
+void __init save_area_add_regs(struct save_area *sa, void *regs)
+{
+ struct lowcore *lc;
+
+ lc = (struct lowcore *)(regs - __LC_FPREGS_SAVE_AREA);
+ memcpy(&sa->psw, &lc->psw_save_area, sizeof(sa->psw));
+ memcpy(&sa->ctrs, &lc->cregs_save_area, sizeof(sa->ctrs));
+ memcpy(&sa->gprs, &lc->gpregs_save_area, sizeof(sa->gprs));
+ memcpy(&sa->acrs, &lc->access_regs_save_area, sizeof(sa->acrs));
+ memcpy(&sa->fprs, &lc->floating_pt_save_area, sizeof(sa->fprs));
+ memcpy(&sa->fpc, &lc->fpt_creg_save_area, sizeof(sa->fpc));
+ memcpy(&sa->prefix, &lc->prefixreg_save_area, sizeof(sa->prefix));
+ memcpy(&sa->todpreg, &lc->tod_progreg_save_area, sizeof(sa->todpreg));
+ memcpy(&sa->timer, &lc->cpu_timer_save_area, sizeof(sa->timer));
+ memcpy(&sa->todcmp, &lc->clock_comp_save_area, sizeof(sa->todcmp));
+}
+
+/*
+ * Copy vector registers into the save area
+ */
+void __init save_area_add_vxrs(struct save_area *sa, __vector128 *vxrs)
+{
+ int i;
+
+ /* Copy lower halves of vector registers 0-15 */
+ for (i = 0; i < 16; i++)
+ memcpy(&sa->vxrs_low[i], &vxrs[i].u[2], 8);
+ /* Copy vector registers 16-31 */
+ memcpy(sa->vxrs_high, vxrs + 16, 16 * sizeof(__vector128));
+}
/*
* Return physical address for virtual address
@@ -51,79 +127,85 @@ static inline void *load_real_addr(void *addr)
}
/*
- * Copy real to virtual or real memory
- */
-static int copy_from_realmem(void *dest, void *src, size_t count)
-{
- unsigned long size;
-
- if (!count)
- return 0;
- if (!is_vmalloc_or_module_addr(dest))
- return memcpy_real(dest, src, count);
- do {
- size = min(count, PAGE_SIZE - (__pa(dest) & ~PAGE_MASK));
- if (memcpy_real(load_real_addr(dest), src, size))
- return -EFAULT;
- count -= size;
- dest += size;
- src += size;
- } while (count);
- return 0;
-}
-
-/*
- * Pointer to ELF header in new kernel
+ * Copy memory of the old, dumped system to a kernel space virtual address
*/
-static void *elfcorehdr_newmem;
-
-/*
- * Copy one page from zfcpdump "oldmem"
- *
- * For pages below HSA size memory from the HSA is copied. Otherwise
- * real memory copy is used.
- */
-static ssize_t copy_oldmem_page_zfcpdump(char *buf, size_t csize,
- unsigned long src, int userbuf)
+int copy_oldmem_kernel(void *dst, void *src, size_t count)
{
+ unsigned long from, len;
+ void *ra;
int rc;
- if (src < sclp.hsa_size) {
- rc = memcpy_hsa(buf, src, csize, userbuf);
- } else {
- if (userbuf)
- rc = copy_to_user_real((void __force __user *) buf,
- (void *) src, csize);
- else
- rc = memcpy_real(buf, (void *) src, csize);
+ while (count) {
+ from = __pa(src);
+ if (!OLDMEM_BASE && from < sclp.hsa_size) {
+ /* Copy from zfcpdump HSA area */
+ len = min(count, sclp.hsa_size - from);
+ rc = memcpy_hsa_kernel(dst, from, len);
+ if (rc)
+ return rc;
+ } else {
+ /* Check for swapped kdump oldmem areas */
+ if (OLDMEM_BASE && from - OLDMEM_BASE < OLDMEM_SIZE) {
+ from -= OLDMEM_BASE;
+ len = min(count, OLDMEM_SIZE - from);
+ } else if (OLDMEM_BASE && from < OLDMEM_SIZE) {
+ len = min(count, OLDMEM_SIZE - from);
+ from += OLDMEM_BASE;
+ } else {
+ len = count;
+ }
+ if (is_vmalloc_or_module_addr(dst)) {
+ ra = load_real_addr(dst);
+ len = min(PAGE_SIZE - offset_in_page(ra), len);
+ } else {
+ ra = dst;
+ }
+ if (memcpy_real(ra, (void *) from, len))
+ return -EFAULT;
+ }
+ dst += len;
+ src += len;
+ count -= len;
}
- return rc ? rc : csize;
+ return 0;
}
/*
- * Copy one page from kdump "oldmem"
- *
- * For the kdump reserved memory this functions performs a swap operation:
- * - [OLDMEM_BASE - OLDMEM_BASE + OLDMEM_SIZE] is mapped to [0 - OLDMEM_SIZE].
- * - [0 - OLDMEM_SIZE] is mapped to [OLDMEM_BASE - OLDMEM_BASE + OLDMEM_SIZE]
+ * Copy memory of the old, dumped system to a user space virtual address
*/
-static ssize_t copy_oldmem_page_kdump(char *buf, size_t csize,
- unsigned long src, int userbuf)
-
+int copy_oldmem_user(void __user *dst, void *src, size_t count)
{
+ unsigned long from, len;
int rc;
- if (src < OLDMEM_SIZE)
- src += OLDMEM_BASE;
- else if (src > OLDMEM_BASE &&
- src < OLDMEM_BASE + OLDMEM_SIZE)
- src -= OLDMEM_BASE;
- if (userbuf)
- rc = copy_to_user_real((void __force __user *) buf,
- (void *) src, csize);
- else
- rc = copy_from_realmem(buf, (void *) src, csize);
- return (rc == 0) ? rc : csize;
+ while (count) {
+ from = __pa(src);
+ if (!OLDMEM_BASE && from < sclp.hsa_size) {
+ /* Copy from zfcpdump HSA area */
+ len = min(count, sclp.hsa_size - from);
+ rc = memcpy_hsa_user(dst, from, len);
+ if (rc)
+ return rc;
+ } else {
+ /* Check for swapped kdump oldmem areas */
+ if (OLDMEM_BASE && from - OLDMEM_BASE < OLDMEM_SIZE) {
+ from -= OLDMEM_BASE;
+ len = min(count, OLDMEM_SIZE - from);
+ } else if (OLDMEM_BASE && from < OLDMEM_SIZE) {
+ len = min(count, OLDMEM_SIZE - from);
+ from += OLDMEM_BASE;
+ } else {
+ len = count;
+ }
+ rc = copy_to_user_real(dst, (void *) from, count);
+ if (rc)
+ return rc;
+ }
+ dst += len;
+ src += len;
+ count -= len;
+ }
+ return 0;
}
/*
@@ -132,15 +214,17 @@ static ssize_t copy_oldmem_page_kdump(char *buf, size_t csize,
ssize_t copy_oldmem_page(unsigned long pfn, char *buf, size_t csize,
unsigned long offset, int userbuf)
{
- unsigned long src;
+ void *src;
+ int rc;
if (!csize)
return 0;
- src = (pfn << PAGE_SHIFT) + offset;
- if (OLDMEM_BASE)
- return copy_oldmem_page_kdump(buf, csize, src, userbuf);
+ src = (void *) (pfn << PAGE_SHIFT) + offset;
+ if (userbuf)
+ rc = copy_oldmem_user((void __force __user *) buf, src, csize);
else
- return copy_oldmem_page_zfcpdump(buf, csize, src, userbuf);
+ rc = copy_oldmem_kernel((void *) buf, src, csize);
+ return rc;
}
/*
@@ -209,33 +293,6 @@ int remap_oldmem_pfn_range(struct vm_area_struct *vma, unsigned long from,
}
/*
- * Copy memory from old kernel
- */
-int copy_from_oldmem(void *dest, void *src, size_t count)
-{
- unsigned long copied = 0;
- int rc;
-
- if (OLDMEM_BASE) {
- if ((unsigned long) src < OLDMEM_SIZE) {
- copied = min(count, OLDMEM_SIZE - (unsigned long) src);
- rc = copy_from_realmem(dest, src + OLDMEM_BASE, copied);
- if (rc)
- return rc;
- }
- } else {
- 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);
- if (rc)
- return rc;
- }
- }
- return copy_from_realmem(dest + copied, src + copied, count - copied);
-}
-
-/*
* Alloc memory and panic in case of ENOMEM
*/
static void *kzalloc_panic(int len)
@@ -251,8 +308,8 @@ static void *kzalloc_panic(int len)
/*
* Initialize ELF note
*/
-static void *nt_init(void *buf, Elf64_Word type, void *desc, int d_len,
- const char *name)
+static void *nt_init_name(void *buf, Elf64_Word type, void *desc, int d_len,
+ const char *name)
{
Elf64_Nhdr *note;
u64 len;
@@ -272,136 +329,42 @@ static void *nt_init(void *buf, Elf64_Word type, void *desc, int d_len,
return PTR_ADD(buf, len);
}
-/*
- * Initialize prstatus note
- */
-static void *nt_prstatus(void *ptr, struct save_area *sa)
+static inline void *nt_init(void *buf, Elf64_Word type, void *desc, int d_len)
{
- struct elf_prstatus nt_prstatus;
- static int cpu_nr = 1;
-
- memset(&nt_prstatus, 0, sizeof(nt_prstatus));
- memcpy(&nt_prstatus.pr_reg.gprs, sa->gp_regs, sizeof(sa->gp_regs));
- memcpy(&nt_prstatus.pr_reg.psw, sa->psw, sizeof(sa->psw));
- memcpy(&nt_prstatus.pr_reg.acrs, sa->acc_regs, sizeof(sa->acc_regs));
- nt_prstatus.pr_pid = cpu_nr;
- cpu_nr++;
-
- return nt_init(ptr, NT_PRSTATUS, &nt_prstatus, sizeof(nt_prstatus),
- "CORE");
+ return nt_init_name(buf, type, desc, d_len, KEXEC_CORE_NOTE_NAME);
}
/*
- * Initialize fpregset (floating point) note
+ * Fill ELF notes for one CPU with save area registers
*/
-static void *nt_fpregset(void *ptr, struct save_area *sa)
+static void *fill_cpu_elf_notes(void *ptr, int cpu, struct save_area *sa)
{
+ struct elf_prstatus nt_prstatus;
elf_fpregset_t nt_fpregset;
+ /* Prepare prstatus note */
+ memset(&nt_prstatus, 0, sizeof(nt_prstatus));
+ memcpy(&nt_prstatus.pr_reg.gprs, sa->gprs, sizeof(sa->gprs));
+ memcpy(&nt_prstatus.pr_reg.psw, sa->psw, sizeof(sa->psw));
+ memcpy(&nt_prstatus.pr_reg.acrs, sa->acrs, sizeof(sa->acrs));
+ nt_prstatus.pr_pid = cpu;
+ /* Prepare fpregset (floating point) note */
memset(&nt_fpregset, 0, sizeof(nt_fpregset));
- memcpy(&nt_fpregset.fpc, &sa->fp_ctrl_reg, sizeof(sa->fp_ctrl_reg));
- memcpy(&nt_fpregset.fprs, &sa->fp_regs, sizeof(sa->fp_regs));
-
- return nt_init(ptr, NT_PRFPREG, &nt_fpregset, sizeof(nt_fpregset),
- "CORE");
-}
-
-/*
- * Initialize timer note
- */
-static void *nt_s390_timer(void *ptr, struct save_area *sa)
-{
- return nt_init(ptr, NT_S390_TIMER, &sa->timer, sizeof(sa->timer),
- KEXEC_CORE_NOTE_NAME);
-}
-
-/*
- * Initialize TOD clock comparator note
- */
-static void *nt_s390_tod_cmp(void *ptr, struct save_area *sa)
-{
- return nt_init(ptr, NT_S390_TODCMP, &sa->clk_cmp,
- sizeof(sa->clk_cmp), KEXEC_CORE_NOTE_NAME);
-}
-
-/*
- * Initialize TOD programmable register note
- */
-static void *nt_s390_tod_preg(void *ptr, struct save_area *sa)
-{
- return nt_init(ptr, NT_S390_TODPREG, &sa->tod_reg,
- sizeof(sa->tod_reg), KEXEC_CORE_NOTE_NAME);
-}
-
-/*
- * Initialize control register note
- */
-static void *nt_s390_ctrs(void *ptr, struct save_area *sa)
-{
- return nt_init(ptr, NT_S390_CTRS, &sa->ctrl_regs,
- sizeof(sa->ctrl_regs), KEXEC_CORE_NOTE_NAME);
-}
-
-/*
- * Initialize prefix register note
- */
-static void *nt_s390_prefix(void *ptr, struct save_area *sa)
-{
- return nt_init(ptr, NT_S390_PREFIX, &sa->pref_reg,
- sizeof(sa->pref_reg), KEXEC_CORE_NOTE_NAME);
-}
-
-/*
- * Initialize vxrs high note (full 128 bit VX registers 16-31)
- */
-static void *nt_s390_vx_high(void *ptr, __vector128 *vx_regs)
-{
- return nt_init(ptr, NT_S390_VXRS_HIGH, &vx_regs[16],
- 16 * sizeof(__vector128), KEXEC_CORE_NOTE_NAME);
-}
-
-/*
- * Initialize vxrs low note (lower halves of VX registers 0-15)
- */
-static void *nt_s390_vx_low(void *ptr, __vector128 *vx_regs)
-{
- Elf64_Nhdr *note;
- u64 len;
- int i;
-
- note = (Elf64_Nhdr *)ptr;
- note->n_namesz = strlen(KEXEC_CORE_NOTE_NAME) + 1;
- note->n_descsz = 16 * 8;
- note->n_type = NT_S390_VXRS_LOW;
- len = sizeof(Elf64_Nhdr);
-
- memcpy(ptr + len, KEXEC_CORE_NOTE_NAME, note->n_namesz);
- len = roundup(len + note->n_namesz, 4);
-
- ptr += len;
- /* Copy lower halves of SIMD registers 0-15 */
- for (i = 0; i < 16; i++) {
- memcpy(ptr, &vx_regs[i].u[2], 8);
- ptr += 8;
- }
- return ptr;
-}
-
-/*
- * Fill ELF notes for one CPU with save area registers
- */
-void *fill_cpu_elf_notes(void *ptr, struct save_area *sa, __vector128 *vx_regs)
-{
- ptr = nt_prstatus(ptr, sa);
- ptr = nt_fpregset(ptr, sa);
- ptr = nt_s390_timer(ptr, sa);
- ptr = nt_s390_tod_cmp(ptr, sa);
- ptr = nt_s390_tod_preg(ptr, sa);
- ptr = nt_s390_ctrs(ptr, sa);
- ptr = nt_s390_prefix(ptr, sa);
- if (MACHINE_HAS_VX && vx_regs) {
- ptr = nt_s390_vx_low(ptr, vx_regs);
- ptr = nt_s390_vx_high(ptr, vx_regs);
+ memcpy(&nt_fpregset.fpc, &sa->fpc, sizeof(sa->fpc));
+ memcpy(&nt_fpregset.fprs, &sa->fprs, sizeof(sa->fprs));
+ /* Create ELF notes for the CPU */
+ ptr = nt_init(ptr, NT_PRSTATUS, &nt_prstatus, sizeof(nt_prstatus));
+ ptr = nt_init(ptr, NT_PRFPREG, &nt_fpregset, sizeof(nt_fpregset));
+ ptr = nt_init(ptr, NT_S390_TIMER, &sa->timer, sizeof(sa->timer));
+ ptr = nt_init(ptr, NT_S390_TODCMP, &sa->todcmp, sizeof(sa->todcmp));
+ ptr = nt_init(ptr, NT_S390_TODPREG, &sa->todpreg, sizeof(sa->todpreg));
+ ptr = nt_init(ptr, NT_S390_CTRS, &sa->ctrs, sizeof(sa->ctrs));
+ ptr = nt_init(ptr, NT_S390_PREFIX, &sa->prefix, sizeof(sa->prefix));
+ if (MACHINE_HAS_VX) {
+ ptr = nt_init(ptr, NT_S390_VXRS_HIGH,
+ &sa->vxrs_high, sizeof(sa->vxrs_high));
+ ptr = nt_init(ptr, NT_S390_VXRS_LOW,
+ &sa->vxrs_low, sizeof(sa->vxrs_low));
}
return ptr;
}
@@ -416,8 +379,7 @@ static void *nt_prpsinfo(void *ptr)
memset(&prpsinfo, 0, sizeof(prpsinfo));
prpsinfo.pr_sname = 'R';
strcpy(prpsinfo.pr_fname, "vmlinux");
- return nt_init(ptr, NT_PRPSINFO, &prpsinfo, sizeof(prpsinfo),
- KEXEC_CORE_NOTE_NAME);
+ return nt_init(ptr, NT_PRPSINFO, &prpsinfo, sizeof(prpsinfo));
}
/*
@@ -429,17 +391,18 @@ static void *get_vmcoreinfo_old(unsigned long *size)
Elf64_Nhdr note;
void *addr;
- if (copy_from_oldmem(&addr, &S390_lowcore.vmcore_info, sizeof(addr)))
+ if (copy_oldmem_kernel(&addr, &S390_lowcore.vmcore_info, sizeof(addr)))
return NULL;
memset(nt_name, 0, sizeof(nt_name));
- if (copy_from_oldmem(&note, addr, sizeof(note)))
+ if (copy_oldmem_kernel(&note, addr, sizeof(note)))
return NULL;
- if (copy_from_oldmem(nt_name, addr + sizeof(note), sizeof(nt_name) - 1))
+ if (copy_oldmem_kernel(nt_name, addr + sizeof(note),
+ sizeof(nt_name) - 1))
return NULL;
if (strcmp(nt_name, "VMCOREINFO") != 0)
return NULL;
vmcoreinfo = kzalloc_panic(note.n_descsz);
- if (copy_from_oldmem(vmcoreinfo, addr + 24, note.n_descsz))
+ if (copy_oldmem_kernel(vmcoreinfo, addr + 24, note.n_descsz))
return NULL;
*size = note.n_descsz;
return vmcoreinfo;
@@ -458,7 +421,7 @@ static void *nt_vmcoreinfo(void *ptr)
vmcoreinfo = get_vmcoreinfo_old(&size);
if (!vmcoreinfo)
return ptr;
- return nt_init(ptr, 0, vmcoreinfo, size, "VMCOREINFO");
+ return nt_init_name(ptr, 0, vmcoreinfo, size, "VMCOREINFO");
}
/*
@@ -487,13 +450,12 @@ static void *ehdr_init(Elf64_Ehdr *ehdr, int mem_chunk_cnt)
*/
static int get_cpu_cnt(void)
{
- int i, cpus = 0;
+ struct save_area *sa;
+ int cpus = 0;
- for (i = 0; i < dump_save_areas.count; i++) {
- if (dump_save_areas.areas[i]->sa.pref_reg == 0)
- continue;
- cpus++;
- }
+ list_for_each_entry(sa, &dump_save_areas, list)
+ if (sa->prefix != 0)
+ cpus++;
return cpus;
}
@@ -538,18 +500,16 @@ static void loads_init(Elf64_Phdr *phdr, u64 loads_offset)
*/
static void *notes_init(Elf64_Phdr *phdr, void *ptr, u64 notes_offset)
{
- struct save_area_ext *sa_ext;
+ struct save_area *sa;
void *ptr_start = ptr;
- int i;
+ int cpu;
ptr = nt_prpsinfo(ptr);
- for (i = 0; i < dump_save_areas.count; i++) {
- sa_ext = dump_save_areas.areas[i];
- if (sa_ext->sa.pref_reg == 0)
- continue;
- ptr = fill_cpu_elf_notes(ptr, &sa_ext->sa, sa_ext->vx_regs);
- }
+ cpu = 1;
+ list_for_each_entry(sa, &dump_save_areas, list)
+ if (sa->prefix != 0)
+ ptr = fill_cpu_elf_notes(ptr, cpu++, sa);
ptr = nt_vmcoreinfo(ptr);
memset(phdr, 0, sizeof(*phdr));
phdr->p_type = PT_NOTE;
@@ -573,9 +533,6 @@ int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size)
/* If we are not in kdump or zfcpdump mode return */
if (!OLDMEM_BASE && ipl_info.type != IPL_TYPE_FCP_DUMP)
return 0;
- /* If elfcorehdr= has been passed via cmdline, we use that one */
- 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.hsa_size)
return -ENODEV;
@@ -606,7 +563,6 @@ int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size)
hdr_off = PTR_DIFF(ptr, hdr);
loads_init(phdr_loads, hdr_off);
*addr = (unsigned long long) hdr;
- elfcorehdr_newmem = hdr;
*size = (unsigned long long) hdr_off;
BUG_ON(elfcorehdr_size > alloc_size);
return 0;
@@ -617,8 +573,6 @@ int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size)
*/
void elfcorehdr_free(unsigned long long addr)
{
- if (!elfcorehdr_newmem)
- return;
kfree((void *)(unsigned long)addr);
}
@@ -629,7 +583,6 @@ ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos)
{
void *src = (void *)(unsigned long)*ppos;
- src = elfcorehdr_newmem ? src : src - OLDMEM_BASE;
memcpy(buf, src, count);
*ppos += count;
return count;
@@ -641,15 +594,8 @@ ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos)
ssize_t elfcorehdr_read_notes(char *buf, size_t count, u64 *ppos)
{
void *src = (void *)(unsigned long)*ppos;
- int rc;
- if (elfcorehdr_newmem) {
- memcpy(buf, src, count);
- } else {
- rc = copy_from_oldmem(buf, src, count);
- if (rc)
- return rc;
- }
+ memcpy(buf, src, count);
*ppos += count;
return count;
}
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index 6fca0e464..c890a5589 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -1470,7 +1470,7 @@ debug_dflt_header_fn(debug_info_t * id, struct debug_view *view,
except_str = "*";
else
except_str = "-";
- caller = ((unsigned long) entry->caller) & PSW_ADDR_INSN;
+ caller = (unsigned long) entry->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,
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index 6e7296160..62973efd2 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -2022,7 +2022,7 @@ void show_code(struct pt_regs *regs)
*ptr++ = '\t';
ptr += print_insn(ptr, code + start, addr);
start += opsize;
- printk(buffer);
+ printk("%s", buffer);
ptr = buffer;
ptr += sprintf(ptr, "\n ");
hops++;
@@ -2049,7 +2049,7 @@ void print_fn_code(unsigned char *code, unsigned long len)
ptr += print_insn(ptr, code, (unsigned long) code);
*ptr++ = '\n';
*ptr++ = 0;
- printk(buffer);
+ printk("%s", buffer);
code += opsize;
len -= opsize;
}
diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c
index dc8e20473..02bd02ff6 100644
--- a/arch/s390/kernel/dumpstack.c
+++ b/arch/s390/kernel/dumpstack.c
@@ -34,22 +34,21 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
unsigned long addr;
while (1) {
- sp = sp & PSW_ADDR_INSN;
if (sp < low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
- addr = sf->gprs[8] & PSW_ADDR_INSN;
+ addr = sf->gprs[8];
printk("([<%016lx>] %pSR)\n", addr, (void *)addr);
/* Follow the backchain. */
while (1) {
low = sp;
- sp = sf->back_chain & PSW_ADDR_INSN;
+ sp = sf->back_chain;
if (!sp)
break;
if (sp <= low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
- addr = sf->gprs[8] & PSW_ADDR_INSN;
+ addr = sf->gprs[8];
printk(" [<%016lx>] %pSR\n", addr, (void *)addr);
}
/* Zero backchain detected, check for interrupt frame. */
@@ -57,7 +56,7 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
if (sp <= low || sp > high - sizeof(*regs))
return sp;
regs = (struct pt_regs *) sp;
- addr = regs->psw.addr & PSW_ADDR_INSN;
+ addr = regs->psw.addr;
printk(" [<%016lx>] %pSR\n", addr, (void *)addr);
low = sp;
sp = regs->gprs[15];
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 3c31609df..c55576bba 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -252,14 +252,14 @@ static void early_pgm_check_handler(void)
unsigned long addr;
addr = S390_lowcore.program_old_psw.addr;
- fixup = search_exception_tables(addr & PSW_ADDR_INSN);
+ fixup = search_exception_tables(addr);
if (!fixup)
disabled_wait(0);
/* Disable low address protection before storing into lowcore. */
__ctl_store(cr0, 0, 0);
cr0_new = cr0 & ~(1UL << 28);
__ctl_load(cr0_new, 0, 0);
- S390_lowcore.program_old_psw.addr = extable_fixup(fixup)|PSW_ADDR_AMODE;
+ S390_lowcore.program_old_psw.addr = extable_fixup(fixup);
__ctl_load(cr0, 0, 0);
}
@@ -268,9 +268,9 @@ static noinline __init void setup_lowcore_early(void)
psw_t psw;
psw.mask = PSW_MASK_BASE | PSW_DEFAULT_KEY | PSW_MASK_EA | PSW_MASK_BA;
- psw.addr = PSW_ADDR_AMODE | (unsigned long) s390_base_ext_handler;
+ psw.addr = (unsigned long) s390_base_ext_handler;
S390_lowcore.external_new_psw = psw;
- psw.addr = PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
+ psw.addr = (unsigned long) s390_base_pgm_handler;
S390_lowcore.program_new_psw = psw;
s390_base_pgm_handler_fn = early_pgm_check_handler;
}
@@ -335,6 +335,14 @@ static __init void detect_machine_facilities(void)
}
}
+static inline void save_vector_registers(void)
+{
+#ifdef CONFIG_CRASH_DUMP
+ if (test_facility(129))
+ save_vx_regs(boot_cpu_vector_save_area);
+#endif
+}
+
static int __init disable_vector_extension(char *str)
{
S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX;
@@ -451,6 +459,7 @@ void __init startup_init(void)
detect_diag9c();
detect_diag44();
detect_machine_facilities();
+ save_vector_registers();
setup_topology();
sclp_early_detect();
lockdep_on();
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 857b6526d..cd5a19138 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -764,6 +764,7 @@ ENTRY(psw_idle)
.insn rsy,0xeb0000000017,%r1,5,__SF_EMPTY+16(%r15)
.Lpsw_idle_stcctm:
#endif
+ oi __LC_CPU_FLAGS+7,_CIF_ENABLED_WAIT
STCK __CLOCK_IDLE_ENTER(%r2)
stpt __TIMER_IDLE_ENTER(%r2)
.Lpsw_idle_lpsw:
@@ -1146,6 +1147,7 @@ cleanup_critical:
.quad .Lio_done - 4
.Lcleanup_idle:
+ ni __LC_CPU_FLAGS+7,255-_CIF_ENABLED_WAIT
# copy interrupt clock & cpu timer
mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
mvc __TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c
index e0eaf1113..0f7bfeba6 100644
--- a/arch/s390/kernel/ftrace.c
+++ b/arch/s390/kernel/ftrace.c
@@ -203,7 +203,7 @@ unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip)
goto out;
if (unlikely(atomic_read(&current->tracing_graph_pause)))
goto out;
- ip = (ip & PSW_ADDR_INSN) - MCOUNT_INSN_SIZE;
+ ip -= MCOUNT_INSN_SIZE;
trace.func = ip;
trace.depth = current->curr_ret_stack + 1;
/* Only trace if the calling function expects to. */
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index 301ee9c70..fcaefb041 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -25,6 +25,7 @@
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
+#include <asm/facility.h>
#include <asm/page.h>
#include <asm/ptrace.h>
@@ -300,27 +301,27 @@ ENTRY(startup_kdump)
xc 0x200(256),0x200 # partially clear lowcore
xc 0x300(256),0x300
xc 0xe00(256),0xe00
+ xc 0xf00(256),0xf00
lctlg %c0,%c15,0x200(%r0) # initialize control registers
stck __LC_LAST_UPDATE_CLOCK
spt 6f-.LPG0(%r13)
mvc __LC_LAST_UPDATE_TIMER(8),6f-.LPG0(%r13)
- xc __LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST
- # check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10}
- .insn s,0xb2b10000,0 # store facilities @ __LC_STFL_FAC_LIST
- tm __LC_STFL_FAC_LIST,0x01 # stfle available ?
+ stfl 0(%r0) # store facilities @ __LC_STFL_FAC_LIST
+ mvc __LC_STFLE_FAC_LIST(4),__LC_STFL_FAC_LIST
+ tm __LC_STFLE_FAC_LIST,0x01 # stfle available ?
jz 0f
- la %r0,1
- .insn s,0xb2b00000,__LC_STFL_FAC_LIST # store facility list extended
+ lghi %r0,FACILITIES_ALS_DWORDS-1
+ .insn s,0xb2b00000,__LC_STFLE_FAC_LIST # store facility list extended
# verify if all required facilities are supported by the machine
-0: la %r1,__LC_STFL_FAC_LIST
+0: la %r1,__LC_STFLE_FAC_LIST
la %r2,3f+8-.LPG0(%r13)
- l %r3,0(%r2)
-1: l %r0,0(%r1)
- n %r0,4(%r2)
- cl %r0,4(%r2)
+ lhi %r3,FACILITIES_ALS_DWORDS
+1: lg %r0,0(%r1)
+ ng %r0,0(%r2)
+ clg %r0,0(%r2)
jne 2f
- la %r1,4(%r1)
- la %r2,4(%r2)
+ la %r1,8(%r1)
+ la %r2,8(%r2)
ahi %r3,-1
jnz 1b
j 4f
@@ -340,24 +341,10 @@ ENTRY(startup_kdump)
3: .long 0x000a0000,0x8badcccc
# List of facilities that are required. If not all facilities are present
-# the kernel will crash. Format is number of facility words with bits set,
-# followed by the facility words.
+# the kernel will crash.
+
+ .quad FACILITIES_ALS
-#if defined(CONFIG_MARCH_Z13)
- .long 2, 0xc100eff2, 0xf46cc800
-#elif defined(CONFIG_MARCH_ZEC12)
- .long 2, 0xc100eff2, 0xf46cc800
-#elif defined(CONFIG_MARCH_Z196)
- .long 2, 0xc100eff2, 0xf46c0000
-#elif defined(CONFIG_MARCH_Z10)
- .long 2, 0xc100eff2, 0xf0680000
-#elif defined(CONFIG_MARCH_Z9_109)
- .long 1, 0xc100efc2
-#elif defined(CONFIG_MARCH_Z990)
- .long 1, 0xc0002000
-#elif defined(CONFIG_MARCH_Z900)
- .long 1, 0xc0000000
-#endif
4:
/* Continue with startup code in head64.S */
jg startup_continue
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 58b719fa8..03c2b469c 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -16,7 +16,7 @@
__HEAD
ENTRY(startup_continue)
- tm __LC_STFL_FAC_LIST+6,0x80 # LPP available ?
+ tm __LC_STFLE_FAC_LIST+5,0x80 # LPP available ?
jz 0f
xc __LC_LPP+1(7,0),__LC_LPP+1 # clear lpp and current_pid
mvi __LC_LPP,0x80 # and set LPP_MAGIC
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index b1f0a90f9..f20abdb56 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -2039,21 +2039,15 @@ static void do_reset_calls(void)
reset->fn();
}
-u32 dump_prefix_page;
-
-void s390_reset_system(void (*fn_pre)(void),
- void (*fn_post)(void *), void *data)
+void s390_reset_system(void)
{
- struct _lowcore *lc;
+ struct lowcore *lc;
- lc = (struct _lowcore *)(unsigned long) store_prefix();
+ lc = (struct lowcore *)(unsigned long) store_prefix();
/* Stack for interrupt/machine check handler */
lc->panic_stack = S390_lowcore.panic_stack;
- /* Save prefix page address for dump case */
- dump_prefix_page = (u32)(unsigned long) lc;
-
/* Disable prefixing */
set_prefix(0);
@@ -2063,12 +2057,12 @@ void s390_reset_system(void (*fn_pre)(void),
/* Set new machine check handler */
S390_lowcore.mcck_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT;
S390_lowcore.mcck_new_psw.addr =
- PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler;
+ (unsigned long) s390_base_mcck_handler;
/* Set new program check handler */
S390_lowcore.program_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT;
S390_lowcore.program_new_psw.addr =
- PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
+ (unsigned long) s390_base_pgm_handler;
/*
* Clear subchannel ID and number to signal new kernel that no CCW or
@@ -2077,14 +2071,5 @@ void s390_reset_system(void (*fn_pre)(void),
S390_lowcore.subchannel_id = 0;
S390_lowcore.subchannel_nr = 0;
- /* Store status at absolute zero */
- store_status();
-
- /* Call function before reset */
- if (fn_pre)
- fn_pre();
do_reset_calls();
- /* Call function after reset */
- if (fn_post)
- fn_post(data);
}
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 389db56a2..250f59725 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -226,7 +226,7 @@ static void enable_singlestep(struct kprobe_ctlblk *kcb,
__ctl_load(per_kprobe, 9, 11);
regs->psw.mask |= PSW_MASK_PER;
regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT);
- regs->psw.addr = ip | PSW_ADDR_AMODE;
+ regs->psw.addr = ip;
}
NOKPROBE_SYMBOL(enable_singlestep);
@@ -238,7 +238,7 @@ static void disable_singlestep(struct kprobe_ctlblk *kcb,
__ctl_load(kcb->kprobe_saved_ctl, 9, 11);
regs->psw.mask &= ~PSW_MASK_PER;
regs->psw.mask |= kcb->kprobe_saved_imask;
- regs->psw.addr = ip | PSW_ADDR_AMODE;
+ regs->psw.addr = ip;
}
NOKPROBE_SYMBOL(disable_singlestep);
@@ -310,7 +310,7 @@ static int kprobe_handler(struct pt_regs *regs)
*/
preempt_disable();
kcb = get_kprobe_ctlblk();
- p = get_kprobe((void *)((regs->psw.addr & PSW_ADDR_INSN) - 2));
+ p = get_kprobe((void *)(regs->psw.addr - 2));
if (p) {
if (kprobe_running()) {
@@ -460,7 +460,7 @@ static int trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
break;
}
- regs->psw.addr = orig_ret_address | PSW_ADDR_AMODE;
+ regs->psw.addr = orig_ret_address;
pop_kprobe(get_kprobe_ctlblk());
kretprobe_hash_unlock(current, &flags);
@@ -490,7 +490,7 @@ NOKPROBE_SYMBOL(trampoline_probe_handler);
static void resume_execution(struct kprobe *p, struct pt_regs *regs)
{
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
- unsigned long ip = regs->psw.addr & PSW_ADDR_INSN;
+ unsigned long ip = regs->psw.addr;
int fixup = probe_get_fixup_type(p->ainsn.insn);
/* Check if the kprobes location is an enabled ftrace caller */
@@ -605,9 +605,9 @@ static int kprobe_trap_handler(struct pt_regs *regs, int trapnr)
* In case the user-specified fault handler returned
* zero, try to fix up.
*/
- entry = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
+ entry = search_exception_tables(regs->psw.addr);
if (entry) {
- regs->psw.addr = extable_fixup(entry) | PSW_ADDR_AMODE;
+ regs->psw.addr = extable_fixup(entry);
return 1;
}
@@ -683,7 +683,7 @@ int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
memcpy(&kcb->jprobe_saved_regs, regs, sizeof(struct pt_regs));
/* setup return addr to the jprobe handler routine */
- regs->psw.addr = (unsigned long) jp->entry | PSW_ADDR_AMODE;
+ regs->psw.addr = (unsigned long) jp->entry;
regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT);
/* r15 is the stack pointer */
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index fb0901ec4..2f1b7217c 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -35,46 +35,6 @@ extern const unsigned long long relocate_kernel_len;
#ifdef CONFIG_CRASH_DUMP
/*
- * Create ELF notes for one CPU
- */
-static void add_elf_notes(int cpu)
-{
- struct save_area *sa = (void *) 4608 + store_prefix();
- void *ptr;
-
- memcpy((void *) (4608UL + sa->pref_reg), sa, sizeof(*sa));
- ptr = (u64 *) per_cpu_ptr(crash_notes, cpu);
- ptr = fill_cpu_elf_notes(ptr, sa, NULL);
- memset(ptr, 0, sizeof(struct elf_note));
-}
-
-/*
- * Initialize CPU ELF notes
- */
-static void setup_regs(void)
-{
- unsigned long sa = S390_lowcore.prefixreg_save_area + SAVE_AREA_BASE;
- struct _lowcore *lc;
- int cpu, this_cpu;
-
- /* Get lowcore pointer from store status of this CPU (absolute zero) */
- lc = (struct _lowcore *)(unsigned long)S390_lowcore.prefixreg_save_area;
- this_cpu = smp_find_processor_id(stap());
- add_elf_notes(this_cpu);
- for_each_online_cpu(cpu) {
- if (cpu == this_cpu)
- continue;
- if (smp_store_status(cpu))
- continue;
- add_elf_notes(cpu);
- }
- if (MACHINE_HAS_VX)
- save_vx_regs_safe((void *) lc->vector_save_area_addr);
- /* Copy dump CPU store status info to absolute zero */
- memcpy((void *) SAVE_AREA_BASE, (void *) sa, sizeof(struct save_area));
-}
-
-/*
* PM notifier callback for kdump
*/
static int machine_kdump_pm_cb(struct notifier_block *nb, unsigned long action,
@@ -105,14 +65,66 @@ static int __init machine_kdump_pm_init(void)
arch_initcall(machine_kdump_pm_init);
/*
- * Start kdump: We expect here that a store status has been done on our CPU
+ * Reset the system, copy boot CPU registers to absolute zero,
+ * and jump to the kdump image
*/
static void __do_machine_kdump(void *image)
{
- int (*start_kdump)(int) = (void *)((struct kimage *) image)->start;
+ int (*start_kdump)(int);
+ unsigned long prefix;
+
+ /* store_status() saved the prefix register to lowcore */
+ prefix = (unsigned long) S390_lowcore.prefixreg_save_area;
+
+ /* Now do the reset */
+ s390_reset_system();
+
+ /*
+ * Copy dump CPU store status info to absolute zero.
+ * This need to be done *after* s390_reset_system set the
+ * prefix register of this CPU to zero
+ */
+ memcpy((void *) __LC_FPREGS_SAVE_AREA,
+ (void *)(prefix + __LC_FPREGS_SAVE_AREA), 512);
__load_psw_mask(PSW_MASK_BASE | PSW_DEFAULT_KEY | PSW_MASK_EA | PSW_MASK_BA);
+ start_kdump = (void *)((struct kimage *) image)->start;
start_kdump(1);
+
+ /* Die if start_kdump returns */
+ disabled_wait((unsigned long) __builtin_return_address(0));
+}
+
+/*
+ * Start kdump: create a LGR log entry, store status of all CPUs and
+ * branch to __do_machine_kdump.
+ */
+static noinline void __machine_kdump(void *image)
+{
+ int this_cpu, cpu;
+
+ lgr_info_log();
+ /* Get status of the other CPUs */
+ this_cpu = smp_find_processor_id(stap());
+ for_each_online_cpu(cpu) {
+ if (cpu == this_cpu)
+ continue;
+ if (smp_store_status(cpu))
+ continue;
+ }
+ /* Store status of the boot CPU */
+ if (MACHINE_HAS_VX)
+ save_vx_regs((void *) &S390_lowcore.vector_save_area);
+ /*
+ * To create a good backchain for this CPU in the dump store_status
+ * is passed the address of a function. The address is saved into
+ * the PSW save area of the boot CPU and the function is invoked as
+ * a tail call of store_status. The backchain in the dump will look
+ * like this:
+ * restart_int_handler -> __machine_kexec -> __do_machine_kdump
+ * The call to store_status() will not return.
+ */
+ store_status(__do_machine_kdump, image);
}
#endif
@@ -235,10 +247,14 @@ static void __do_machine_kexec(void *data)
relocate_kernel_t data_mover;
struct kimage *image = data;
+ s390_reset_system();
data_mover = (relocate_kernel_t) page_to_phys(image->control_code_page);
/* Call the moving routine */
(*data_mover)(&image->head, image->start);
+
+ /* Die if kexec returns */
+ disabled_wait((unsigned long) __builtin_return_address(0));
}
/*
@@ -251,14 +267,10 @@ static void __machine_kexec(void *data)
tracing_off();
debug_locks_off();
#ifdef CONFIG_CRASH_DUMP
- if (((struct kimage *) data)->type == KEXEC_TYPE_CRASH) {
-
- lgr_info_log();
- s390_reset_system(setup_regs, __do_machine_kdump, data);
- } else
+ if (((struct kimage *) data)->type == KEXEC_TYPE_CRASH)
+ __machine_kdump(data);
#endif
- s390_reset_system(NULL, __do_machine_kexec, data);
- disabled_wait((unsigned long) __builtin_return_address(0));
+ __do_machine_kexec(data);
}
/*
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index 0c1a67931..7873e1714 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -159,11 +159,11 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
/* Increase core size by size of got & plt and set start
offsets for got and plt. */
- me->core_size = ALIGN(me->core_size, 4);
- me->arch.got_offset = me->core_size;
- me->core_size += me->arch.got_size;
- me->arch.plt_offset = me->core_size;
- me->core_size += me->arch.plt_size;
+ me->core_layout.size = ALIGN(me->core_layout.size, 4);
+ me->arch.got_offset = me->core_layout.size;
+ me->core_layout.size += me->arch.got_size;
+ me->arch.plt_offset = me->core_layout.size;
+ me->core_layout.size += me->arch.plt_size;
return 0;
}
@@ -279,7 +279,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
if (info->got_initialized == 0) {
Elf_Addr *gotent;
- gotent = me->module_core + me->arch.got_offset +
+ gotent = me->core_layout.base + me->arch.got_offset +
info->got_offset;
*gotent = val;
info->got_initialized = 1;
@@ -302,7 +302,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
rc = apply_rela_bits(loc, val, 0, 64, 0);
else if (r_type == R_390_GOTENT ||
r_type == R_390_GOTPLTENT) {
- val += (Elf_Addr) me->module_core - loc;
+ val += (Elf_Addr) me->core_layout.base - loc;
rc = apply_rela_bits(loc, val, 1, 32, 1);
}
break;
@@ -315,7 +315,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
case R_390_PLTOFF64: /* 16 bit offset from GOT to PLT. */
if (info->plt_initialized == 0) {
unsigned int *ip;
- ip = me->module_core + me->arch.plt_offset +
+ ip = me->core_layout.base + me->arch.plt_offset +
info->plt_offset;
ip[0] = 0x0d10e310; /* basr 1,0; lg 1,10(1); br 1 */
ip[1] = 0x100a0004;
@@ -334,7 +334,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
val - loc + 0xffffUL < 0x1ffffeUL) ||
(r_type == R_390_PLT32DBL &&
val - loc + 0xffffffffULL < 0x1fffffffeULL)))
- val = (Elf_Addr) me->module_core +
+ val = (Elf_Addr) me->core_layout.base +
me->arch.plt_offset +
info->plt_offset;
val += rela->r_addend - loc;
@@ -356,7 +356,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
case R_390_GOTOFF32: /* 32 bit offset to GOT. */
case R_390_GOTOFF64: /* 64 bit offset to GOT. */
val = val + rela->r_addend -
- ((Elf_Addr) me->module_core + me->arch.got_offset);
+ ((Elf_Addr) me->core_layout.base + me->arch.got_offset);
if (r_type == R_390_GOTOFF16)
rc = apply_rela_bits(loc, val, 0, 16, 0);
else if (r_type == R_390_GOTOFF32)
@@ -366,7 +366,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
break;
case R_390_GOTPC: /* 32 bit PC relative offset to GOT. */
case R_390_GOTPCDBL: /* 32 bit PC rel. off. to GOT shifted by 1. */
- val = (Elf_Addr) me->module_core + me->arch.got_offset +
+ val = (Elf_Addr) me->core_layout.base + me->arch.got_offset +
rela->r_addend - loc;
if (r_type == R_390_GOTPC)
rc = apply_rela_bits(loc, val, 1, 32, 0);
diff --git a/arch/s390/kernel/os_info.c b/arch/s390/kernel/os_info.c
index d112fc66f..87f05e475 100644
--- a/arch/s390/kernel/os_info.c
+++ b/arch/s390/kernel/os_info.c
@@ -89,7 +89,7 @@ static void os_info_old_alloc(int nr, int align)
goto fail;
}
buf_align = PTR_ALIGN(buf, align);
- if (copy_from_oldmem(buf_align, (void *) addr, size)) {
+ if (copy_oldmem_kernel(buf_align, (void *) addr, size)) {
msg = "copy failed";
goto fail_free;
}
@@ -122,14 +122,15 @@ static void os_info_old_init(void)
return;
if (!OLDMEM_BASE)
goto fail;
- if (copy_from_oldmem(&addr, &S390_lowcore.os_info, sizeof(addr)))
+ if (copy_oldmem_kernel(&addr, &S390_lowcore.os_info, sizeof(addr)))
goto fail;
if (addr == 0 || addr % PAGE_SIZE)
goto fail;
os_info_old = kzalloc(sizeof(*os_info_old), GFP_KERNEL);
if (!os_info_old)
goto fail;
- if (copy_from_oldmem(os_info_old, (void *) addr, sizeof(*os_info_old)))
+ if (copy_oldmem_kernel(os_info_old, (void *) addr,
+ sizeof(*os_info_old)))
goto fail_free;
if (os_info_old->magic != OS_INFO_MAGIC)
goto fail_free;
diff --git a/arch/s390/kernel/perf_event.c b/arch/s390/kernel/perf_event.c
index 61595c1f0..0943b11a2 100644
--- a/arch/s390/kernel/perf_event.c
+++ b/arch/s390/kernel/perf_event.c
@@ -74,7 +74,7 @@ static unsigned long guest_is_user_mode(struct pt_regs *regs)
static unsigned long instruction_pointer_guest(struct pt_regs *regs)
{
- return sie_block(regs)->gpsw.addr & PSW_ADDR_INSN;
+ return sie_block(regs)->gpsw.addr;
}
unsigned long perf_instruction_pointer(struct pt_regs *regs)
@@ -231,29 +231,27 @@ static unsigned long __store_trace(struct perf_callchain_entry *entry,
struct pt_regs *regs;
while (1) {
- sp = sp & PSW_ADDR_INSN;
if (sp < low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
- perf_callchain_store(entry, sf->gprs[8] & PSW_ADDR_INSN);
+ perf_callchain_store(entry, sf->gprs[8]);
/* Follow the backchain. */
while (1) {
low = sp;
- sp = sf->back_chain & PSW_ADDR_INSN;
+ sp = sf->back_chain;
if (!sp)
break;
if (sp <= low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
- perf_callchain_store(entry,
- sf->gprs[8] & PSW_ADDR_INSN);
+ perf_callchain_store(entry, sf->gprs[8]);
}
/* Zero backchain detected, check for interrupt frame. */
sp = (unsigned long) (sf + 1);
if (sp <= low || sp > high - sizeof(*regs))
return sp;
regs = (struct pt_regs *) sp;
- perf_callchain_store(entry, sf->gprs[8] & PSW_ADDR_INSN);
+ perf_callchain_store(entry, sf->gprs[8]);
low = sp;
sp = regs->gprs[15];
}
@@ -262,12 +260,13 @@ static unsigned long __store_trace(struct perf_callchain_entry *entry,
void perf_callchain_kernel(struct perf_callchain_entry *entry,
struct pt_regs *regs)
{
- unsigned long head;
+ unsigned long head, frame_size;
struct stack_frame *head_sf;
if (user_mode(regs))
return;
+ frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs);
head = regs->gprs[15];
head_sf = (struct stack_frame *) head;
@@ -275,8 +274,9 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry,
return;
head = head_sf->back_chain;
- head = __store_trace(entry, head, S390_lowcore.async_stack - ASYNC_SIZE,
- S390_lowcore.async_stack);
+ head = __store_trace(entry, head,
+ S390_lowcore.async_stack + frame_size - ASYNC_SIZE,
+ S390_lowcore.async_stack + frame_size);
__store_trace(entry, head, S390_lowcore.thread_info,
S390_lowcore.thread_info + THREAD_SIZE);
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 114ee8b96..2bba7df4a 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -56,10 +56,10 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return 0;
low = task_stack_page(tsk);
high = (struct stack_frame *) task_pt_regs(tsk);
- sf = (struct stack_frame *) (tsk->thread.ksp & PSW_ADDR_INSN);
+ sf = (struct stack_frame *) tsk->thread.ksp;
if (sf <= low || sf > high)
return 0;
- sf = (struct stack_frame *) (sf->back_chain & PSW_ADDR_INSN);
+ sf = (struct stack_frame *) sf->back_chain;
if (sf <= low || sf > high)
return 0;
return sf->gprs[8];
@@ -154,7 +154,7 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
memset(&frame->childregs, 0, sizeof(struct pt_regs));
frame->childregs.psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT |
PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
- frame->childregs.psw.addr = PSW_ADDR_AMODE |
+ frame->childregs.psw.addr =
(unsigned long) kernel_thread_starter;
frame->childregs.gprs[9] = new_stackp; /* function */
frame->childregs.gprs[10] = arg;
@@ -220,14 +220,14 @@ unsigned long get_wchan(struct task_struct *p)
return 0;
low = task_stack_page(p);
high = (struct stack_frame *) task_pt_regs(p);
- sf = (struct stack_frame *) (p->thread.ksp & PSW_ADDR_INSN);
+ sf = (struct stack_frame *) p->thread.ksp;
if (sf <= low || sf > high)
return 0;
for (count = 0; count < 16; count++) {
- sf = (struct stack_frame *) (sf->back_chain & PSW_ADDR_INSN);
+ sf = (struct stack_frame *) sf->back_chain;
if (sf <= low || sf > high)
return 0;
- return_address = sf->gprs[8] & PSW_ADDR_INSN;
+ return_address = sf->gprs[8];
if (!in_sched_functions(return_address))
return return_address;
}
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 7ce00e7a7..647128d5b 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -61,6 +61,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
"edat", "etf3eh", "highgprs", "te", "vx"
};
+ static const char * const int_hwcap_str[] = {
+ "sie"
+ };
unsigned long n = (unsigned long) v - 1;
int i;
@@ -75,6 +78,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
for (i = 0; i < ARRAY_SIZE(hwcap_str); i++)
if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
seq_printf(m, "%s ", hwcap_str[i]);
+ for (i = 0; i < ARRAY_SIZE(int_hwcap_str); i++)
+ if (int_hwcap_str[i] && (int_hwcap & (1UL << i)))
+ seq_printf(m, "%s ", int_hwcap_str[i]);
seq_puts(m, "\n");
show_cacheinfo(m);
}
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 01c37b36c..49b1c13bf 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -84,7 +84,7 @@ void update_cr_regs(struct task_struct *task)
if (test_tsk_thread_flag(task, TIF_UPROBE_SINGLESTEP))
new.control |= PER_EVENT_IFETCH;
new.start = 0;
- new.end = PSW_ADDR_INSN;
+ new.end = -1UL;
}
/* Take care of the PER enablement bit in the PSW. */
@@ -148,7 +148,7 @@ static inline unsigned long __peek_user_per(struct task_struct *child,
else if (addr == (addr_t) &dummy->cr11)
/* End address of the active per set. */
return test_thread_flag(TIF_SINGLE_STEP) ?
- PSW_ADDR_INSN : child->thread.per_user.end;
+ -1UL : child->thread.per_user.end;
else if (addr == (addr_t) &dummy->bits)
/* Single-step bit. */
return test_thread_flag(TIF_SINGLE_STEP) ?
@@ -495,8 +495,6 @@ long arch_ptrace(struct task_struct *child, long request,
}
return 0;
default:
- /* Removing high order bit from addr (only for 31 bit). */
- addr &= PSW_ADDR_INSN;
return ptrace_request(child, request, addr, data);
}
}
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S
index 52aab0bd8..89ea8c213 100644
--- a/arch/s390/kernel/reipl.S
+++ b/arch/s390/kernel/reipl.S
@@ -9,60 +9,66 @@
#include <asm/sigp.h>
#
-# store_status
+# Issue "store status" for the current CPU to its prefix page
+# and call passed function afterwards
#
-# Prerequisites to run this function:
-# - Prefix register is set to zero
-# - Original prefix register is stored in "dump_prefix_page"
-# - Lowcore protection is off
+# r2 = Function to be called after store status
+# r3 = Parameter for function
#
ENTRY(store_status)
/* Save register one and load save area base */
stg %r1,__LC_SAVE_AREA_RESTART
- lghi %r1,SAVE_AREA_BASE
/* General purpose registers */
- stmg %r0,%r15,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- lg %r2,__LC_SAVE_AREA_RESTART
- stg %r2,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE+8(%r1)
+ lghi %r1,__LC_GPREGS_SAVE_AREA
+ stmg %r0,%r15,0(%r1)
+ mvc 8(8,%r1),__LC_SAVE_AREA_RESTART
/* Control registers */
- stctg %c0,%c15,__LC_CREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+ lghi %r1,__LC_CREGS_SAVE_AREA
+ stctg %c0,%c15,0(%r1)
/* Access registers */
- stam %a0,%a15,__LC_AREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+ lghi %r1,__LC_AREGS_SAVE_AREA
+ stam %a0,%a15,0(%r1)
/* Floating point registers */
- std %f0, 0x00 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f1, 0x08 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f2, 0x10 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f3, 0x18 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f4, 0x20 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f5, 0x28 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f6, 0x30 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f7, 0x38 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f8, 0x40 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f9, 0x48 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f10,0x50 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f11,0x58 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f12,0x60 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f13,0x68 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f14,0x70 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
- std %f15,0x78 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1)
+ lghi %r1,__LC_FPREGS_SAVE_AREA
+ std %f0, 0x00(%r1)
+ std %f1, 0x08(%r1)
+ std %f2, 0x10(%r1)
+ std %f3, 0x18(%r1)
+ std %f4, 0x20(%r1)
+ std %f5, 0x28(%r1)
+ std %f6, 0x30(%r1)
+ std %f7, 0x38(%r1)
+ std %f8, 0x40(%r1)
+ std %f9, 0x48(%r1)
+ std %f10,0x50(%r1)
+ std %f11,0x58(%r1)
+ std %f12,0x60(%r1)
+ std %f13,0x68(%r1)
+ std %f14,0x70(%r1)
+ std %f15,0x78(%r1)
/* Floating point control register */
- stfpc __LC_FP_CREG_SAVE_AREA-SAVE_AREA_BASE(%r1)
+ lghi %r1,__LC_FP_CREG_SAVE_AREA
+ stfpc 0(%r1)
/* CPU timer */
- stpt __LC_CPU_TIMER_SAVE_AREA-SAVE_AREA_BASE(%r1)
- /* Saved prefix register */
- larl %r2,dump_prefix_page
- mvc __LC_PREFIX_SAVE_AREA-SAVE_AREA_BASE(4,%r1),0(%r2)
+ lghi %r1,__LC_CPU_TIMER_SAVE_AREA
+ stpt 0(%r1)
+ /* Store prefix register */
+ lghi %r1,__LC_PREFIX_SAVE_AREA
+ stpx 0(%r1)
/* Clock comparator - seven bytes */
- larl %r2,.Lclkcmp
- stckc 0(%r2)
- mvc __LC_CLOCK_COMP_SAVE_AREA-SAVE_AREA_BASE + 1(7,%r1),1(%r2)
+ lghi %r1,__LC_CLOCK_COMP_SAVE_AREA
+ larl %r4,.Lclkcmp
+ stckc 0(%r4)
+ mvc 1(7,%r1),1(%r4)
/* Program status word */
- epsw %r2,%r3
- st %r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 0(%r1)
- st %r3,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 4(%r1)
- larl %r2,store_status
- stg %r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 8(%r1)
- br %r14
+ lghi %r1,__LC_PSW_SAVE_AREA
+ epsw %r4,%r5
+ st %r4,0(%r1)
+ st %r5,4(%r1)
+ stg %r2,8(%r1)
+ lgr %r1,%r2
+ lgr %r2,%r3
+ br %r1
.section .bss
.align 8
@@ -77,9 +83,11 @@ ENTRY(store_status)
ENTRY(do_reipl_asm)
basr %r13,0
.Lpg0: lpswe .Lnewpsw-.Lpg0(%r13)
-.Lpg1: brasl %r14,store_status
+.Lpg1: lgr %r3,%r2
+ larl %r2,.Lstatus
+ brasl %r14,store_status
- lctlg %c6,%c6,.Lall-.Lpg0(%r13)
+.Lstatus: lctlg %c6,%c6,.Lall-.Lpg0(%r13)
lgr %r1,%r2
mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13)
stsch .Lschib-.Lpg0(%r13)
diff --git a/arch/s390/kernel/sclp.c b/arch/s390/kernel/sclp.c
index 9fe7781a4..d88db40bd 100644
--- a/arch/s390/kernel/sclp.c
+++ b/arch/s390/kernel/sclp.c
@@ -9,7 +9,11 @@
#include <asm/processor.h>
#include <asm/sclp.h>
+#define EVTYP_VT220MSG_MASK 0x00000040
+#define EVTYP_MSG_MASK 0x40000000
+
static char _sclp_work_area[4096] __aligned(PAGE_SIZE);
+static bool have_vt220, have_linemode;
static void _sclp_wait_int(void)
{
@@ -68,7 +72,7 @@ static int _sclp_setup(int disable)
0x00, 0x1c,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x04,
- 0x80, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
+ 0x80, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
unsigned int *masks;
@@ -82,13 +86,13 @@ static int _sclp_setup(int disable)
rc = _sclp_servc(0x00780005, _sclp_work_area);
if (rc)
return rc;
- if ((masks[0] & masks[3]) != masks[0] ||
- (masks[1] & masks[2]) != masks[1])
- return -EIO;
+ have_vt220 = masks[2] & EVTYP_VT220MSG_MASK;
+ have_linemode = masks[2] & EVTYP_MSG_MASK;
return 0;
}
-static int _sclp_print(const char *str)
+/* Output multi-line text using SCLP Message interface. */
+static void _sclp_print_lm(const char *str)
{
static unsigned char write_head[] = {
/* sccb header */
@@ -143,18 +147,49 @@ static int _sclp_print(const char *str)
} while (ch != 0);
/* SCLP write data */
- return _sclp_servc(0x00760005, _sclp_work_area);
+ _sclp_servc(0x00760005, _sclp_work_area);
}
-int _sclp_print_early(const char *str)
+/* Output multi-line text (plus a newline) using SCLP VT220
+ * interface.
+ */
+static void _sclp_print_vt220(const char *str)
{
- int rc;
+ static unsigned char const write_head[] = {
+ /* sccb header */
+ 0x00, 0x0e,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ /* evbuf header */
+ 0x00, 0x06,
+ 0x1a, 0x00, 0x00, 0x00,
+ };
+ size_t len = strlen(str);
- rc = _sclp_setup(0);
- if (rc)
- return rc;
- rc = _sclp_print(str);
- if (rc)
- return rc;
- return _sclp_setup(1);
+ if (sizeof(write_head) + len >= sizeof(_sclp_work_area))
+ len = sizeof(_sclp_work_area) - sizeof(write_head) - 1;
+
+ memcpy(_sclp_work_area, write_head, sizeof(write_head));
+ memcpy(_sclp_work_area + sizeof(write_head), str, len);
+ _sclp_work_area[sizeof(write_head) + len] = '\n';
+
+ /* Update length fields in evbuf and sccb headers */
+ *(unsigned short *)(_sclp_work_area + 8) += len + 1;
+ *(unsigned short *)(_sclp_work_area + 0) += len + 1;
+
+ /* SCLP write data */
+ (void)_sclp_servc(0x00760005, _sclp_work_area);
+}
+
+/* Output one or more lines of text on the SCLP console (VT220 and /
+ * or line-mode). All lines get terminated; no need for a trailing LF.
+ */
+void _sclp_print_early(const char *str)
+{
+ if (_sclp_setup(0) != 0)
+ return;
+ if (have_linemode)
+ _sclp_print_lm(str);
+ if (have_vt220)
+ _sclp_print_vt220(str);
+ _sclp_setup(1);
}
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index c837bcacf..9220db5c9 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -80,6 +80,8 @@ EXPORT_SYMBOL(console_irq);
unsigned long elf_hwcap __read_mostly = 0;
char elf_platform[ELF_PLATFORM_SIZE];
+unsigned long int_hwcap = 0;
+
int __initdata memory_end_set;
unsigned long __initdata memory_end;
unsigned long __initdata max_physmem_end;
@@ -97,7 +99,7 @@ unsigned long MODULES_VADDR;
unsigned long MODULES_END;
/* An array with a pointer to the lowcore of every CPU. */
-struct _lowcore *lowcore_ptr[NR_CPUS];
+struct lowcore *lowcore_ptr[NR_CPUS];
EXPORT_SYMBOL(lowcore_ptr);
/*
@@ -291,33 +293,29 @@ void *restart_stack __attribute__((__section__(".data")));
static void __init setup_lowcore(void)
{
- struct _lowcore *lc;
+ struct lowcore *lc;
/*
* Setup lowcore for boot cpu
*/
- BUILD_BUG_ON(sizeof(struct _lowcore) != LC_PAGES * 4096);
+ BUILD_BUG_ON(sizeof(struct lowcore) != LC_PAGES * 4096);
lc = __alloc_bootmem_low(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0);
lc->restart_psw.mask = PSW_KERNEL_BITS;
- lc->restart_psw.addr =
- PSW_ADDR_AMODE | (unsigned long) restart_int_handler;
+ lc->restart_psw.addr = (unsigned long) restart_int_handler;
lc->external_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_MCHECK;
- lc->external_new_psw.addr =
- PSW_ADDR_AMODE | (unsigned long) ext_int_handler;
+ lc->external_new_psw.addr = (unsigned long) ext_int_handler;
lc->svc_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
- lc->svc_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) system_call;
+ lc->svc_new_psw.addr = (unsigned long) system_call;
lc->program_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_MCHECK;
- lc->program_new_psw.addr =
- PSW_ADDR_AMODE | (unsigned long) pgm_check_handler;
+ lc->program_new_psw.addr = (unsigned long) pgm_check_handler;
lc->mcck_new_psw.mask = PSW_KERNEL_BITS;
- lc->mcck_new_psw.addr =
- PSW_ADDR_AMODE | (unsigned long) mcck_int_handler;
+ lc->mcck_new_psw.addr = (unsigned long) mcck_int_handler;
lc->io_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_MCHECK;
- lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler;
+ lc->io_new_psw.addr = (unsigned long) io_int_handler;
lc->clock_comparator = -1ULL;
lc->kernel_stack = ((unsigned long) &init_thread_union)
+ THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
@@ -661,15 +659,6 @@ static void __init reserve_kernel(void)
#endif
}
-static void __init reserve_elfcorehdr(void)
-{
-#ifdef CONFIG_CRASH_DUMP
- if (is_kdump_kernel())
- memblock_reserve(elfcorehdr_addr - OLDMEM_BASE,
- PAGE_ALIGN(elfcorehdr_size));
-#endif
-}
-
static void __init setup_memory(void)
{
struct memblock_region *reg;
@@ -793,6 +782,13 @@ static int __init setup_hwcaps(void)
strcpy(elf_platform, "z13");
break;
}
+
+ /*
+ * Virtualization support HWCAP_INT_SIE is bit 0.
+ */
+ if (sclp.has_sief2)
+ int_hwcap |= HWCAP_INT_SIE;
+
return 0;
}
arch_initcall(setup_hwcaps);
@@ -841,6 +837,11 @@ void __init setup_arch(char **cmdline_p)
init_mm.brk = (unsigned long) &_end;
parse_early_param();
+#ifdef CONFIG_CRASH_DUMP
+ /* Deactivate elfcorehdr= kernel parameter */
+ elfcorehdr_addr = ELFCORE_ADDR_MAX;
+#endif
+
os_info_init();
setup_ipl();
@@ -849,7 +850,6 @@ void __init setup_arch(char **cmdline_p)
reserve_oldmem();
reserve_kernel();
reserve_initrd();
- reserve_elfcorehdr();
memblock_allow_resize();
/* Get information about *all* installed memory */
@@ -870,11 +870,13 @@ void __init setup_arch(char **cmdline_p)
check_initrd();
reserve_crashkernel();
+#ifdef CONFIG_CRASH_DUMP
/*
* Be aware that smp_save_dump_cpus() triggers a system reset.
* Therefore CPU and device initialization should be done afterwards.
*/
smp_save_dump_cpus();
+#endif
setup_resources();
setup_vmcoreinfo();
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 028cc46cb..d82562cf0 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -331,13 +331,13 @@ static int setup_frame(int sig, struct k_sigaction *ka,
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ka->sa.sa_flags & SA_RESTORER) {
- restorer = (unsigned long) ka->sa.sa_restorer | PSW_ADDR_AMODE;
+ restorer = (unsigned long) ka->sa.sa_restorer;
} else {
/* Signal frame without vector registers are short ! */
__u16 __user *svc = (void __user *) frame + frame_size - 2;
if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn, svc))
return -EFAULT;
- restorer = (unsigned long) svc | PSW_ADDR_AMODE;
+ restorer = (unsigned long) svc;
}
/* Set up registers for signal handler */
@@ -347,7 +347,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
(PSW_USER_BITS & PSW_MASK_ASC) |
(regs->psw.mask & ~PSW_MASK_ASC);
- regs->psw.addr = (unsigned long) ka->sa.sa_handler | PSW_ADDR_AMODE;
+ regs->psw.addr = (unsigned long) ka->sa.sa_handler;
regs->gprs[2] = sig;
regs->gprs[3] = (unsigned long) &frame->sc;
@@ -394,13 +394,12 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ksig->ka.sa.sa_flags & SA_RESTORER) {
- restorer = (unsigned long)
- ksig->ka.sa.sa_restorer | PSW_ADDR_AMODE;
+ restorer = (unsigned long) ksig->ka.sa.sa_restorer;
} else {
__u16 __user *svc = &frame->svc_insn;
if (__put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn, svc))
return -EFAULT;
- restorer = (unsigned long) svc | PSW_ADDR_AMODE;
+ restorer = (unsigned long) svc;
}
/* Create siginfo on the signal stack */
@@ -426,7 +425,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
(PSW_USER_BITS & PSW_MASK_ASC) |
(regs->psw.mask & ~PSW_MASK_ASC);
- regs->psw.addr = (unsigned long) ksig->ka.sa.sa_handler | PSW_ADDR_AMODE;
+ regs->psw.addr = (unsigned long) ksig->ka.sa.sa_handler;
regs->gprs[2] = ksig->sig;
regs->gprs[3] = (unsigned long) &frame->info;
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 9062df575..3c65a8eae 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -64,8 +64,9 @@ enum {
static DEFINE_PER_CPU(struct cpu *, cpu_device);
struct pcpu {
- struct _lowcore *lowcore; /* lowcore page(s) for the cpu */
+ struct lowcore *lowcore; /* lowcore page(s) for the cpu */
unsigned long ec_mask; /* bit mask for ec_xxx functions */
+ unsigned long ec_clk; /* sigp timestamp for ec_xxx */
signed char state; /* physical cpu state */
signed char polarization; /* physical polarization */
u16 address; /* physical cpu address */
@@ -80,6 +81,10 @@ EXPORT_SYMBOL(smp_cpu_mt_shift);
unsigned int smp_cpu_mtid;
EXPORT_SYMBOL(smp_cpu_mtid);
+#ifdef CONFIG_CRASH_DUMP
+__vector128 __initdata boot_cpu_vector_save_area[__NUM_VXRS];
+#endif
+
static unsigned int smp_max_threads __initdata = -1U;
static int __init early_nosmt(char *s)
@@ -105,8 +110,7 @@ DEFINE_MUTEX(smp_cpu_state_mutex);
/*
* Signal processor helper functions.
*/
-static inline int __pcpu_sigp_relax(u16 addr, u8 order, unsigned long parm,
- u32 *status)
+static inline int __pcpu_sigp_relax(u16 addr, u8 order, unsigned long parm)
{
int cc;
@@ -171,6 +175,7 @@ static void pcpu_ec_call(struct pcpu *pcpu, int ec_bit)
if (test_and_set_bit(ec_bit, &pcpu->ec_mask))
return;
order = pcpu_running(pcpu) ? SIGP_EXTERNAL_CALL : SIGP_EMERGENCY_SIGNAL;
+ pcpu->ec_clk = get_tod_clock_fast();
pcpu_sigp_retry(pcpu, order, 0);
}
@@ -180,10 +185,10 @@ static void pcpu_ec_call(struct pcpu *pcpu, int ec_bit)
static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)
{
unsigned long async_stack, panic_stack;
- struct _lowcore *lc;
+ struct lowcore *lc;
if (pcpu != &pcpu_devices[0]) {
- pcpu->lowcore = (struct _lowcore *)
+ pcpu->lowcore = (struct lowcore *)
__get_free_pages(GFP_KERNEL | GFP_DMA, LC_ORDER);
async_stack = __get_free_pages(GFP_KERNEL, ASYNC_ORDER);
panic_stack = __get_free_page(GFP_KERNEL);
@@ -235,7 +240,7 @@ static void pcpu_free_lowcore(struct pcpu *pcpu)
static void pcpu_prepare_secondary(struct pcpu *pcpu, int cpu)
{
- struct _lowcore *lc = pcpu->lowcore;
+ struct lowcore *lc = pcpu->lowcore;
if (MACHINE_HAS_TLB_LC)
cpumask_set_cpu(cpu, &init_mm.context.cpu_attach_mask);
@@ -255,7 +260,7 @@ static void pcpu_prepare_secondary(struct pcpu *pcpu, int cpu)
static void pcpu_attach_task(struct pcpu *pcpu, struct task_struct *tsk)
{
- struct _lowcore *lc = pcpu->lowcore;
+ struct lowcore *lc = pcpu->lowcore;
struct thread_info *ti = task_thread_info(tsk);
lc->kernel_stack = (unsigned long) task_stack_page(tsk)
@@ -271,7 +276,7 @@ static void pcpu_attach_task(struct pcpu *pcpu, struct task_struct *tsk)
static void pcpu_start_fn(struct pcpu *pcpu, void (*func)(void *), void *data)
{
- struct _lowcore *lc = pcpu->lowcore;
+ struct lowcore *lc = pcpu->lowcore;
lc->restart_stack = lc->kernel_stack;
lc->restart_fn = (unsigned long) func;
@@ -286,7 +291,7 @@ static void pcpu_start_fn(struct pcpu *pcpu, void (*func)(void *), void *data)
static void pcpu_delegate(struct pcpu *pcpu, void (*func)(void *),
void *data, unsigned long stack)
{
- struct _lowcore *lc = lowcore_ptr[pcpu - pcpu_devices];
+ struct lowcore *lc = lowcore_ptr[pcpu - pcpu_devices];
unsigned long source_cpu = stap();
__load_psw_mask(PSW_KERNEL_BITS);
@@ -538,53 +543,24 @@ EXPORT_SYMBOL(smp_ctl_clear_bit);
#ifdef CONFIG_CRASH_DUMP
-static void __init __smp_store_cpu_state(struct save_area_ext *sa_ext,
- u16 address, int is_boot_cpu)
-{
- void *lc = (void *)(unsigned long) store_prefix();
- unsigned long vx_sa;
-
- if (is_boot_cpu) {
- /* Copy the registers of the boot CPU. */
- copy_oldmem_page(1, (void *) &sa_ext->sa, sizeof(sa_ext->sa),
- SAVE_AREA_BASE - PAGE_SIZE, 0);
- if (MACHINE_HAS_VX)
- save_vx_regs_safe(sa_ext->vx_regs);
- return;
- }
- /* Get the registers of a non-boot cpu. */
- __pcpu_sigp_relax(address, SIGP_STOP_AND_STORE_STATUS, 0, NULL);
- memcpy_real(&sa_ext->sa, lc + SAVE_AREA_BASE, sizeof(sa_ext->sa));
- if (!MACHINE_HAS_VX)
- return;
- /* Get the VX registers */
- 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));
- memblock_free(vx_sa, PAGE_SIZE);
-}
-
int smp_store_status(int cpu)
{
- unsigned long vx_sa;
- struct pcpu *pcpu;
+ struct pcpu *pcpu = pcpu_devices + cpu;
+ unsigned long pa;
- pcpu = pcpu_devices + cpu;
- if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
- 0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
+ pa = __pa(&pcpu->lowcore->floating_pt_save_area);
+ if (__pcpu_sigp_relax(pcpu->address, SIGP_STORE_STATUS_AT_ADDRESS,
+ pa) != 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);
+ pa = __pa(pcpu->lowcore->vector_save_area_addr);
+ if (__pcpu_sigp_relax(pcpu->address, SIGP_STORE_ADDITIONAL_STATUS,
+ pa) != SIGP_CC_ORDER_CODE_ACCEPTED)
+ return -EIO;
return 0;
}
-#endif /* CONFIG_CRASH_DUMP */
-
/*
* Collect CPU state of the previous, crashed system.
* There are four cases:
@@ -593,7 +569,7 @@ int smp_store_status(int cpu)
* The state for all CPUs except the boot CPU needs to be collected
* with sigp stop-and-store-status. The boot CPU state is located in
* the absolute lowcore of the memory stored in the HSA. The zcore code
- * will allocate the save area and copy the boot CPU state from the HSA.
+ * will copy the boot CPU state from the HSA.
* 2) stand-alone kdump for SCSI (zfcp dump with swapped memory)
* condition: OLDMEM_BASE != NULL && ipl_info.type == IPL_TYPE_FCP_DUMP
* The state for all CPUs except the boot CPU needs to be collected
@@ -608,55 +584,76 @@ int smp_store_status(int cpu)
* stored the registers of the boot CPU in the memory of the old system.
* 4) kdump and the old kernel stored the CPU state
* condition: OLDMEM_BASE != NULL && is_kdump_kernel()
- * The state of all CPUs is stored in ELF sections in the memory of the
- * old system. The ELF sections are picked up by the crash_dump code
- * via elfcorehdr_addr.
+ * This case does not exist for s390 anymore, setup_arch explicitly
+ * deactivates the elfcorehdr= kernel parameter
*/
+static __init void smp_save_cpu_vxrs(struct save_area *sa, u16 addr,
+ bool is_boot_cpu, unsigned long page)
+{
+ __vector128 *vxrs = (__vector128 *) page;
+
+ if (is_boot_cpu)
+ vxrs = boot_cpu_vector_save_area;
+ else
+ __pcpu_sigp_relax(addr, SIGP_STORE_ADDITIONAL_STATUS, page);
+ save_area_add_vxrs(sa, vxrs);
+}
+
+static __init void smp_save_cpu_regs(struct save_area *sa, u16 addr,
+ bool is_boot_cpu, unsigned long page)
+{
+ void *regs = (void *) page;
+
+ if (is_boot_cpu)
+ copy_oldmem_kernel(regs, (void *) __LC_FPREGS_SAVE_AREA, 512);
+ else
+ __pcpu_sigp_relax(addr, SIGP_STORE_STATUS_AT_ADDRESS, page);
+ save_area_add_regs(sa, regs);
+}
+
void __init smp_save_dump_cpus(void)
{
-#ifdef CONFIG_CRASH_DUMP
- int addr, cpu, boot_cpu_addr, max_cpu_addr;
- struct save_area_ext *sa_ext;
+ int addr, boot_cpu_addr, max_cpu_addr;
+ struct save_area *sa;
+ unsigned long page;
bool is_boot_cpu;
- if (is_kdump_kernel())
- /* Previous system stored the CPU states. Nothing to do. */
- return;
if (!(OLDMEM_BASE || ipl_info.type == IPL_TYPE_FCP_DUMP))
/* No previous system present, normal boot. */
return;
+ /* Allocate a page as dumping area for the store status sigps */
+ page = memblock_alloc_base(PAGE_SIZE, PAGE_SIZE, 1UL << 31);
/* Set multi-threading state to the previous system. */
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;
- cpu += 1;
- }
- 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) ==
+ max_cpu_addr = SCLP_MAX_CORES << sclp.mtid_prev;
+ for (addr = 0; addr <= max_cpu_addr; addr++) {
+ if (__pcpu_sigp_relax(addr, SIGP_SENSE, 0) ==
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);
+ /* Allocate save area */
+ sa = save_area_alloc(is_boot_cpu);
+ if (!sa)
+ panic("could not allocate memory for save area\n");
+ if (MACHINE_HAS_VX)
+ /* Get the vector registers */
+ smp_save_cpu_vxrs(sa, addr, is_boot_cpu, page);
+ /*
+ * For a zfcp dump OLDMEM_BASE == NULL and the registers
+ * of the boot CPU are stored in the HSA. To retrieve
+ * these registers an SCLP request is required which is
+ * done by drivers/s390/char/zcore.c:init_cpu_info()
+ */
+ if (!is_boot_cpu || OLDMEM_BASE)
+ /* Get the CPU registers */
+ smp_save_cpu_regs(sa, addr, is_boot_cpu, page);
}
+ memblock_free(page, PAGE_SIZE);
diag308_reset();
pcpu_set_smt(0);
-#endif /* CONFIG_CRASH_DUMP */
}
+#endif /* CONFIG_CRASH_DUMP */
void smp_cpu_set_polarization(int cpu, int val)
{
@@ -680,7 +677,7 @@ static struct sclp_core_info *smp_get_core_info(void)
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) ==
+ if (__pcpu_sigp_relax(address, SIGP_SENSE, 0) ==
SIGP_CC_NOT_OPERATIONAL)
continue;
info->core[info->configured].core_id =
@@ -924,7 +921,7 @@ void __init smp_prepare_boot_cpu(void)
pcpu->state = CPU_STATE_CONFIGURED;
pcpu->address = stap();
- pcpu->lowcore = (struct _lowcore *)(unsigned long) store_prefix();
+ pcpu->lowcore = (struct lowcore *)(unsigned long) store_prefix();
S390_lowcore.percpu_offset = __per_cpu_offset[0];
smp_cpu_set_polarization(0, POLARIZATION_UNKNOWN);
set_cpu_present(0, true);
diff --git a/arch/s390/kernel/stacktrace.c b/arch/s390/kernel/stacktrace.c
index 1785cd822..8f64ebd63 100644
--- a/arch/s390/kernel/stacktrace.c
+++ b/arch/s390/kernel/stacktrace.c
@@ -21,12 +21,11 @@ static unsigned long save_context_stack(struct stack_trace *trace,
unsigned long addr;
while(1) {
- sp &= PSW_ADDR_INSN;
if (sp < low || sp > high)
return sp;
sf = (struct stack_frame *)sp;
while(1) {
- addr = sf->gprs[8] & PSW_ADDR_INSN;
+ addr = sf->gprs[8];
if (!trace->skip)
trace->entries[trace->nr_entries++] = addr;
else
@@ -34,7 +33,7 @@ static unsigned long save_context_stack(struct stack_trace *trace,
if (trace->nr_entries >= trace->max_entries)
return sp;
low = sp;
- sp = sf->back_chain & PSW_ADDR_INSN;
+ sp = sf->back_chain;
if (!sp)
break;
if (sp <= low || sp > high - sizeof(*sf))
@@ -46,7 +45,7 @@ static unsigned long save_context_stack(struct stack_trace *trace,
if (sp <= low || sp > high - sizeof(*regs))
return sp;
regs = (struct pt_regs *)sp;
- addr = regs->psw.addr & PSW_ADDR_INSN;
+ addr = regs->psw.addr;
if (savesched || !in_sched_functions(addr)) {
if (!trace->skip)
trace->entries[trace->nr_entries++] = addr;
@@ -60,33 +59,43 @@ static unsigned long save_context_stack(struct stack_trace *trace,
}
}
-void save_stack_trace(struct stack_trace *trace)
+static void __save_stack_trace(struct stack_trace *trace, unsigned long sp)
{
- register unsigned long sp asm ("15");
- unsigned long orig_sp, new_sp;
+ unsigned long new_sp, frame_size;
- orig_sp = sp & PSW_ADDR_INSN;
- new_sp = save_context_stack(trace, orig_sp,
- S390_lowcore.panic_stack - PAGE_SIZE,
- S390_lowcore.panic_stack, 1);
- if (new_sp != orig_sp)
- return;
+ frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs);
+ new_sp = save_context_stack(trace, sp,
+ S390_lowcore.panic_stack + frame_size - PAGE_SIZE,
+ S390_lowcore.panic_stack + frame_size, 1);
new_sp = save_context_stack(trace, new_sp,
- S390_lowcore.async_stack - ASYNC_SIZE,
- S390_lowcore.async_stack, 1);
- if (new_sp != orig_sp)
- return;
+ S390_lowcore.async_stack + frame_size - ASYNC_SIZE,
+ S390_lowcore.async_stack + frame_size, 1);
save_context_stack(trace, new_sp,
S390_lowcore.thread_info,
S390_lowcore.thread_info + THREAD_SIZE, 1);
}
+
+void save_stack_trace(struct stack_trace *trace)
+{
+ register unsigned long r15 asm ("15");
+ unsigned long sp;
+
+ sp = r15;
+ __save_stack_trace(trace, sp);
+ if (trace->nr_entries < trace->max_entries)
+ trace->entries[trace->nr_entries++] = ULONG_MAX;
+}
EXPORT_SYMBOL_GPL(save_stack_trace);
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
unsigned long sp, low, high;
- sp = tsk->thread.ksp & PSW_ADDR_INSN;
+ sp = tsk->thread.ksp;
+ if (tsk == current) {
+ /* Get current stack pointer. */
+ asm volatile("la %0,0(15)" : "=a" (sp));
+ }
low = (unsigned long) task_stack_page(tsk);
high = (unsigned long) task_pt_regs(tsk);
save_context_stack(trace, sp, low, high, 0);
@@ -94,3 +103,14 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
trace->entries[trace->nr_entries++] = ULONG_MAX;
}
EXPORT_SYMBOL_GPL(save_stack_trace_tsk);
+
+void save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace)
+{
+ unsigned long sp;
+
+ sp = kernel_stack_pointer(regs);
+ __save_stack_trace(trace, sp);
+ if (trace->nr_entries < trace->max_entries)
+ trace->entries[trace->nr_entries++] = ULONG_MAX;
+}
+EXPORT_SYMBOL_GPL(save_stack_trace_regs);
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index 5378c3ea1..293d8b98f 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -383,3 +383,4 @@ SYSCALL(sys_recvfrom,compat_sys_recvfrom)
SYSCALL(sys_recvmsg,compat_sys_recvmsg)
SYSCALL(sys_shutdown,sys_shutdown)
SYSCALL(sys_mlock2,compat_sys_mlock2)
+SYSCALL(sys_copy_file_range,compat_sys_copy_file_range) /* 375 */
diff --git a/arch/s390/kernel/sysinfo.c b/arch/s390/kernel/sysinfo.c
index 99babea02..f7dba3887 100644
--- a/arch/s390/kernel/sysinfo.c
+++ b/arch/s390/kernel/sysinfo.c
@@ -111,8 +111,7 @@ static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info)
static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info)
{
- static int max_mnest;
- int i, rc;
+ int i;
seq_putc(m, '\n');
if (!MACHINE_HAS_TOPOLOGY)
@@ -123,7 +122,7 @@ static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info)
for (i = 0; i < TOPOLOGY_NR_MAG; i++)
seq_printf(m, " %d", info->mag[i]);
seq_putc(m, '\n');
-#ifdef CONFIG_SCHED_MC
+#ifdef CONFIG_SCHED_TOPOLOGY
store_topology(info);
seq_printf(m, "CPU Topology SW: ");
for (i = 0; i < TOPOLOGY_NR_MAG; i++)
@@ -145,6 +144,10 @@ static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info)
seq_printf(m, "CPUs Configured: %d\n", info->cpus_configured);
seq_printf(m, "CPUs Standby: %d\n", info->cpus_standby);
seq_printf(m, "CPUs Reserved: %d\n", info->cpus_reserved);
+ if (info->mt_installed) {
+ seq_printf(m, "CPUs G-MTID: %d\n", info->mt_gtid);
+ seq_printf(m, "CPUs S-MTID: %d\n", info->mt_stid);
+ }
/*
* Sigh 2. According to the specification the alternate
* capability field is a 32 bit floating point number
@@ -194,13 +197,10 @@ static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info)
seq_printf(m, "LPAR CPUs Reserved: %d\n", info->cpus_reserved);
seq_printf(m, "LPAR CPUs Dedicated: %d\n", info->cpus_dedicated);
seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared);
- if (info->mt_installed & 0x80) {
- seq_printf(m, "LPAR CPUs G-MTID: %d\n",
- info->mt_general & 0x1f);
- seq_printf(m, "LPAR CPUs S-MTID: %d\n",
- info->mt_installed & 0x1f);
- seq_printf(m, "LPAR CPUs PS-MTID: %d\n",
- info->mt_psmtid & 0x1f);
+ if (info->mt_installed) {
+ seq_printf(m, "LPAR CPUs G-MTID: %d\n", info->mt_gtid);
+ seq_printf(m, "LPAR CPUs S-MTID: %d\n", info->mt_stid);
+ seq_printf(m, "LPAR CPUs PS-MTID: %d\n", info->mt_psmtid);
}
}
diff --git a/arch/s390/kernel/trace.c b/arch/s390/kernel/trace.c
index 21a5df995..dde7654f5 100644
--- a/arch/s390/kernel/trace.c
+++ b/arch/s390/kernel/trace.c
@@ -18,6 +18,9 @@ void trace_s390_diagnose_norecursion(int diag_nr)
unsigned long flags;
unsigned int *depth;
+ /* Avoid lockdep recursion. */
+ if (IS_ENABLED(CONFIG_LOCKDEP))
+ return;
local_irq_save(flags);
depth = this_cpu_ptr(&diagnose_trace_depth);
if (*depth == 0) {
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 1b18118bb..017eb03da 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -32,8 +32,7 @@ static inline void __user *get_trap_ip(struct pt_regs *regs)
address = *(unsigned long *)(current->thread.trap_tdb + 24);
else
address = regs->psw.addr;
- return (void __user *)
- ((address - (regs->int_code >> 16)) & PSW_ADDR_INSN);
+ return (void __user *) (address - (regs->int_code >> 16));
}
static inline void report_user_fault(struct pt_regs *regs, int signr)
@@ -46,7 +45,7 @@ static inline void report_user_fault(struct pt_regs *regs, int signr)
return;
printk("User process fault: interruption code %04x ilc:%d ",
regs->int_code & 0xffff, regs->int_code >> 17);
- print_vma_addr("in ", regs->psw.addr & PSW_ADDR_INSN);
+ print_vma_addr("in ", regs->psw.addr);
printk("\n");
show_regs(regs);
}
@@ -69,13 +68,13 @@ void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str)
report_user_fault(regs, si_signo);
} else {
const struct exception_table_entry *fixup;
- fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
+ fixup = search_exception_tables(regs->psw.addr);
if (fixup)
- regs->psw.addr = extable_fixup(fixup) | PSW_ADDR_AMODE;
+ regs->psw.addr = extable_fixup(fixup);
else {
enum bug_trap_type btt;
- btt = report_bug(regs->psw.addr & PSW_ADDR_INSN, regs);
+ btt = report_bug(regs->psw.addr, regs);
if (btt == BUG_TRAP_TYPE_WARN)
return;
die(regs, str);
@@ -260,11 +259,8 @@ void vector_exception(struct pt_regs *regs)
void data_exception(struct pt_regs *regs)
{
- __u16 __user *location;
int signal = 0;
- location = get_trap_ip(regs);
-
save_fpu_regs();
if (current->thread.fpu.fpc & FPC_DXC_MASK)
signal = SIGFPE;
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 59eddb0e1..94495cac8 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -80,7 +80,7 @@ struct vdso_data *vdso_data = &vdso_data_store.data;
/*
* Setup vdso data page.
*/
-static void vdso_init_data(struct vdso_data *vd)
+static void __init vdso_init_data(struct vdso_data *vd)
{
vd->ectg_available = test_facility(31);
}
@@ -90,9 +90,10 @@ static void vdso_init_data(struct vdso_data *vd)
*/
#define SEGMENT_ORDER 2
-int vdso_alloc_per_cpu(struct _lowcore *lowcore)
+int vdso_alloc_per_cpu(struct lowcore *lowcore)
{
unsigned long segment_table, page_table, page_frame;
+ struct vdso_per_cpu_data *vd;
u32 *psal, *aste;
int i;
@@ -107,6 +108,12 @@ int vdso_alloc_per_cpu(struct _lowcore *lowcore)
if (!segment_table || !page_table || !page_frame)
goto out;
+ /* Initialize per-cpu vdso data page */
+ vd = (struct vdso_per_cpu_data *) page_frame;
+ vd->cpu_nr = lowcore->cpu_nr;
+ vd->node_id = cpu_to_node(vd->cpu_nr);
+
+ /* Set up access register mode page table */
clear_table((unsigned long *) segment_table, _SEGMENT_ENTRY_EMPTY,
PAGE_SIZE << SEGMENT_ORDER);
clear_table((unsigned long *) page_table, _PAGE_INVALID,
@@ -138,7 +145,7 @@ out:
return -ENOMEM;
}
-void vdso_free_per_cpu(struct _lowcore *lowcore)
+void vdso_free_per_cpu(struct lowcore *lowcore)
{
unsigned long segment_table, page_table, page_frame;
u32 *psal, *aste;
@@ -163,7 +170,7 @@ static void vdso_init_cr5(void)
if (!vdso_enabled)
return;
- cr5 = offsetof(struct _lowcore, paste);
+ cr5 = offsetof(struct lowcore, paste);
__ctl_load(cr5, 5, 5);
}
@@ -299,8 +306,6 @@ static int __init vdso_init(void)
get_page(virt_to_page(vdso_data));
- smp_mb();
-
return 0;
}
early_initcall(vdso_init);
diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile
index ee8a18e50..f9c459586 100644
--- a/arch/s390/kernel/vdso32/Makefile
+++ b/arch/s390/kernel/vdso32/Makefile
@@ -1,6 +1,6 @@
# List of files in the vdso, has to be asm only for now
-obj-vdso32 = gettimeofday.o clock_getres.o clock_gettime.o note.o
+obj-vdso32 = gettimeofday.o clock_getres.o clock_gettime.o note.o getcpu.o
# Build rules
diff --git a/arch/s390/kernel/vdso32/getcpu.S b/arch/s390/kernel/vdso32/getcpu.S
new file mode 100644
index 000000000..c1ed0b720
--- /dev/null
+++ b/arch/s390/kernel/vdso32/getcpu.S
@@ -0,0 +1,43 @@
+/*
+ * Userland implementation of getcpu() for 32 bits processes in a
+ * s390 kernel for use in the vDSO
+ *
+ * Copyright IBM Corp. 2016
+ * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+#include <asm/vdso.h>
+#include <asm/asm-offsets.h>
+
+ .text
+ .align 4
+ .globl __kernel_getcpu
+ .type __kernel_getcpu,@function
+__kernel_getcpu:
+ .cfi_startproc
+ ear %r1,%a4
+ lhi %r4,1
+ sll %r4,24
+ sar %a4,%r4
+ la %r4,0
+ epsw %r0,0
+ sacf 512
+ l %r5,__VDSO_CPU_NR(%r4)
+ l %r4,__VDSO_NODE_ID(%r4)
+ tml %r0,0x4000
+ jo 1f
+ tml %r0,0x8000
+ jno 0f
+ sacf 256
+ j 1f
+0: sacf 0
+1: sar %a4,%r1
+ ltr %r2,%r2
+ jz 2f
+ st %r5,0(%r2)
+2: ltr %r3,%r3
+ jz 3f
+ st %r4,0(%r3)
+3: lhi %r2,0
+ br %r14
+ .cfi_endproc
+ .size __kernel_getcpu,.-__kernel_getcpu
diff --git a/arch/s390/kernel/vdso32/vdso32.lds.S b/arch/s390/kernel/vdso32/vdso32.lds.S
index a8c379fa1..8f048c2d6 100644
--- a/arch/s390/kernel/vdso32/vdso32.lds.S
+++ b/arch/s390/kernel/vdso32/vdso32.lds.S
@@ -132,6 +132,7 @@ VERSION
__kernel_gettimeofday;
__kernel_clock_gettime;
__kernel_clock_getres;
+ __kernel_getcpu;
local: *;
};
diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile
index c4b03f9ed..058659c1b 100644
--- a/arch/s390/kernel/vdso64/Makefile
+++ b/arch/s390/kernel/vdso64/Makefile
@@ -1,6 +1,6 @@
# List of files in the vdso, has to be asm only for now
-obj-vdso64 = gettimeofday.o clock_getres.o clock_gettime.o note.o
+obj-vdso64 = gettimeofday.o clock_getres.o clock_gettime.o note.o getcpu.o
# Build rules
diff --git a/arch/s390/kernel/vdso64/getcpu.S b/arch/s390/kernel/vdso64/getcpu.S
new file mode 100644
index 000000000..4cbe98291
--- /dev/null
+++ b/arch/s390/kernel/vdso64/getcpu.S
@@ -0,0 +1,42 @@
+/*
+ * Userland implementation of getcpu() for 64 bits processes in a
+ * s390 kernel for use in the vDSO
+ *
+ * Copyright IBM Corp. 2016
+ * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+#include <asm/vdso.h>
+#include <asm/asm-offsets.h>
+
+ .text
+ .align 4
+ .globl __kernel_getcpu
+ .type __kernel_getcpu,@function
+__kernel_getcpu:
+ .cfi_startproc
+ ear %r1,%a4
+ llilh %r4,0x0100
+ sar %a4,%r4
+ la %r4,0
+ epsw %r0,0
+ sacf 512
+ l %r5,__VDSO_CPU_NR(%r4)
+ l %r4,__VDSO_NODE_ID(%r4)
+ tml %r0,0x4000
+ jo 1f
+ tml %r0,0x8000
+ jno 0f
+ sacf 256
+ j 1f
+0: sacf 0
+1: sar %a4,%r1
+ ltgr %r2,%r2
+ jz 2f
+ st %r5,0(%r2)
+2: ltgr %r3,%r3
+ jz 3f
+ st %r4,0(%r3)
+3: lghi %r2,0
+ br %r14
+ .cfi_endproc
+ .size __kernel_getcpu,.-__kernel_getcpu
diff --git a/arch/s390/kernel/vdso64/vdso64.lds.S b/arch/s390/kernel/vdso64/vdso64.lds.S
index 9f5979d10..f35455d49 100644
--- a/arch/s390/kernel/vdso64/vdso64.lds.S
+++ b/arch/s390/kernel/vdso64/vdso64.lds.S
@@ -132,6 +132,7 @@ VERSION
__kernel_gettimeofday;
__kernel_clock_gettime;
__kernel_clock_getres;
+ __kernel_getcpu;
local: *;
};