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-rw-r--r--arch/i386/defconfig2
-rw-r--r--arch/i386/kernel/entry.S32
-rw-r--r--arch/i386/kernel/traps.c83
-rw-r--r--arch/s390/defconfig47
-rw-r--r--arch/s390/hypfs/hypfs_diag.c4
-rw-r--r--arch/s390/kernel/ipl.c59
-rw-r--r--arch/s390/kernel/reipl.S6
-rw-r--r--arch/s390/kernel/reipl64.S5
-rw-r--r--arch/s390/kernel/reset.S42
-rw-r--r--arch/x86_64/Makefile2
-rw-r--r--arch/x86_64/defconfig2
-rw-r--r--arch/x86_64/kernel/entry.S33
-rw-r--r--arch/x86_64/kernel/traps.c84
-rw-r--r--arch/x86_64/kernel/vmlinux.lds.S2
14 files changed, 101 insertions, 302 deletions
diff --git a/arch/i386/defconfig b/arch/i386/defconfig
index 3265208e589..e075ff05c46 100644
--- a/arch/i386/defconfig
+++ b/arch/i386/defconfig
@@ -1493,8 +1493,6 @@ CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_LIST is not set
# CONFIG_FRAME_POINTER is not set
-CONFIG_UNWIND_INFO=y
-CONFIG_STACK_UNWIND=y
# CONFIG_FORCED_INLINING is not set
# CONFIG_HEADERS_CHECK is not set
# CONFIG_RCU_TORTURE_TEST is not set
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S
index de34b7fed3c..06461b8b715 100644
--- a/arch/i386/kernel/entry.S
+++ b/arch/i386/kernel/entry.S
@@ -979,38 +979,6 @@ ENTRY(spurious_interrupt_bug)
jmp error_code
CFI_ENDPROC
-#ifdef CONFIG_STACK_UNWIND
-ENTRY(arch_unwind_init_running)
- CFI_STARTPROC
- movl 4(%esp), %edx
- movl (%esp), %ecx
- leal 4(%esp), %eax
- movl %ebx, PT_EBX(%edx)
- xorl %ebx, %ebx
- movl %ebx, PT_ECX(%edx)
- movl %ebx, PT_EDX(%edx)
- movl %esi, PT_ESI(%edx)
- movl %edi, PT_EDI(%edx)
- movl %ebp, PT_EBP(%edx)
- movl %ebx, PT_EAX(%edx)
- movl $__USER_DS, PT_DS(%edx)
- movl $__USER_DS, PT_ES(%edx)
- movl $0, PT_GS(%edx)
- movl %ebx, PT_ORIG_EAX(%edx)
- movl %ecx, PT_EIP(%edx)
- movl 12(%esp), %ecx
- movl $__KERNEL_CS, PT_CS(%edx)
- movl %ebx, PT_EFLAGS(%edx)
- movl %eax, PT_OLDESP(%edx)
- movl 8(%esp), %eax
- movl %ecx, 8(%esp)
- movl PT_EBX(%edx), %ebx
- movl $__KERNEL_DS, PT_OLDSS(%edx)
- jmpl *%eax
- CFI_ENDPROC
-ENDPROC(arch_unwind_init_running)
-#endif
-
ENTRY(kernel_thread_helper)
pushl $0 # fake return address for unwinder
CFI_STARTPROC
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index 2b30dbf8d11..0efad8aeb41 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -94,11 +94,6 @@ asmlinkage void spurious_interrupt_bug(void);
asmlinkage void machine_check(void);
int kstack_depth_to_print = 24;
-#ifdef CONFIG_STACK_UNWIND
-static int call_trace = 1;
-#else
-#define call_trace (-1)
-#endif
ATOMIC_NOTIFIER_HEAD(i386die_chain);
int register_die_notifier(struct notifier_block *nb)
@@ -152,33 +147,6 @@ static inline unsigned long print_context_stack(struct thread_info *tinfo,
return ebp;
}
-struct ops_and_data {
- struct stacktrace_ops *ops;
- void *data;
-};
-
-static asmlinkage int
-dump_trace_unwind(struct unwind_frame_info *info, void *data)
-{
- struct ops_and_data *oad = (struct ops_and_data *)data;
- int n = 0;
- unsigned long sp = UNW_SP(info);
-
- if (arch_unw_user_mode(info))
- return -1;
- while (unwind(info) == 0 && UNW_PC(info)) {
- n++;
- oad->ops->address(oad->data, UNW_PC(info));
- if (arch_unw_user_mode(info))
- break;
- if ((sp & ~(PAGE_SIZE - 1)) == (UNW_SP(info) & ~(PAGE_SIZE - 1))
- && sp > UNW_SP(info))
- break;
- sp = UNW_SP(info);
- }
- return n;
-}
-
#define MSG(msg) ops->warning(data, msg)
void dump_trace(struct task_struct *task, struct pt_regs *regs,
@@ -190,41 +158,6 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
if (!task)
task = current;
- if (call_trace >= 0) {
- int unw_ret = 0;
- struct unwind_frame_info info;
- struct ops_and_data oad = { .ops = ops, .data = data };
-
- if (regs) {
- if (unwind_init_frame_info(&info, task, regs) == 0)
- unw_ret = dump_trace_unwind(&info, &oad);
- } else if (task == current)
- unw_ret = unwind_init_running(&info, dump_trace_unwind,
- &oad);
- else {
- if (unwind_init_blocked(&info, task) == 0)
- unw_ret = dump_trace_unwind(&info, &oad);
- }
- if (unw_ret > 0) {
- if (call_trace == 1 && !arch_unw_user_mode(&info)) {
- ops->warning_symbol(data,
- "DWARF2 unwinder stuck at %s",
- UNW_PC(&info));
- if (UNW_SP(&info) >= PAGE_OFFSET) {
- MSG("Leftover inexact backtrace:");
- stack = (void *)UNW_SP(&info);
- if (!stack)
- return;
- ebp = UNW_FP(&info);
- } else
- MSG("Full inexact backtrace again:");
- } else if (call_trace >= 1)
- return;
- else
- MSG("Full inexact backtrace again:");
- } else
- MSG("Inexact backtrace:");
- }
if (!stack) {
unsigned long dummy;
stack = &dummy;
@@ -1258,19 +1191,3 @@ static int __init kstack_setup(char *s)
return 1;
}
__setup("kstack=", kstack_setup);
-
-#ifdef CONFIG_STACK_UNWIND
-static int __init call_trace_setup(char *s)
-{
- if (strcmp(s, "old") == 0)
- call_trace = -1;
- else if (strcmp(s, "both") == 0)
- call_trace = 0;
- else if (strcmp(s, "newfallback") == 0)
- call_trace = 1;
- else if (strcmp(s, "new") == 2)
- call_trace = 2;
- return 1;
-}
-__setup("call_trace=", call_trace_setup);
-#endif
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index a6ec919ba83..5368cf4a350 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -1,14 +1,15 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.19-rc2
-# Wed Oct 18 17:11:10 2006
+# Linux kernel version: 2.6.20-rc1
+# Fri Dec 15 16:52:28 2006
#
CONFIG_MMU=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+# CONFIG_ARCH_HAS_ILOG2_U32 is not set
+# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_GENERIC_HWEIGHT=y
-CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_TIME=y
CONFIG_S390=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
@@ -37,12 +38,13 @@ CONFIG_AUDIT=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
# CONFIG_CPUSETS is not set
+CONFIG_SYSFS_DEPRECATED=y
# CONFIG_RELAY is not set
CONFIG_INITRAMFS_SOURCE=""
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
# CONFIG_EMBEDDED is not set
-# CONFIG_SYSCTL_SYSCALL is not set
+CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
@@ -119,6 +121,7 @@ CONFIG_PACK_STACK=y
CONFIG_CHECK_STACK=y
CONFIG_STACK_GUARD=256
# CONFIG_WARN_STACK is not set
+CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_DISCONTIGMEM_MANUAL is not set
@@ -128,6 +131,7 @@ CONFIG_FLAT_NODE_MEM_MAP=y
# CONFIG_SPARSEMEM_STATIC is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_RESOURCES_64BIT=y
+CONFIG_HOLES_IN_ZONE=y
#
# I/O subsystem configuration
@@ -196,6 +200,7 @@ CONFIG_INET_TCP_DIAG=y
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
CONFIG_IPV6=y
# CONFIG_IPV6_PRIVACY is not set
# CONFIG_IPV6_ROUTER_PREF is not set
@@ -211,7 +216,6 @@ CONFIG_INET6_XFRM_MODE_BEET=y
# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
CONFIG_IPV6_SIT=y
# CONFIG_IPV6_TUNNEL is not set
-# CONFIG_IPV6_SUBTREES is not set
# CONFIG_IPV6_MULTIPLE_TABLES is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETFILTER is not set
@@ -246,6 +250,7 @@ CONFIG_IPV6_SIT=y
# QoS and/or fair queueing
#
CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_FIFO=y
CONFIG_NET_SCH_CLK_JIFFIES=y
# CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set
# CONFIG_NET_SCH_CLK_CPU is not set
@@ -277,6 +282,7 @@ CONFIG_NET_CLS_ROUTE=y
CONFIG_NET_CLS_FW=m
CONFIG_NET_CLS_U32=m
# CONFIG_CLS_U32_PERF is not set
+CONFIG_CLS_U32_MARK=y
CONFIG_NET_CLS_RSVP=m
CONFIG_NET_CLS_RSVP6=m
# CONFIG_NET_EMATCH is not set
@@ -315,6 +321,7 @@ CONFIG_SYS_HYPERVISOR=y
#
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
+# CONFIG_SCSI_TGT is not set
CONFIG_SCSI_NETLINK=y
CONFIG_SCSI_PROC_FS=y
@@ -335,6 +342,7 @@ CONFIG_CHR_DEV_SG=y
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
+CONFIG_SCSI_SCAN_ASYNC=y
#
# SCSI Transports
@@ -546,6 +554,7 @@ CONFIG_DNOTIFY=y
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set
+CONFIG_GENERIC_ACL=y
#
# CD-ROM/DVD Filesystems
@@ -571,7 +580,7 @@ CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
# CONFIG_HUGETLB_PAGE is not set
CONFIG_RAMFS=y
-# CONFIG_CONFIGFS_FS is not set
+CONFIG_CONFIGFS_FS=m
#
# Miscellaneous filesystems
@@ -616,7 +625,6 @@ CONFIG_SUNRPC=y
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
# CONFIG_9P_FS is not set
-CONFIG_GENERIC_ACL=y
#
# Partition Types
@@ -646,6 +654,14 @@ CONFIG_MSDOS_PARTITION=y
# CONFIG_NLS is not set
#
+# Distributed Lock Manager
+#
+CONFIG_DLM=m
+CONFIG_DLM_TCP=y
+# CONFIG_DLM_SCTP is not set
+# CONFIG_DLM_DEBUG is not set
+
+#
# Instrumentation Support
#
@@ -663,6 +679,8 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+CONFIG_HEADERS_CHECK=y
CONFIG_DEBUG_KERNEL=y
CONFIG_LOG_BUF_SHIFT=17
# CONFIG_SCHEDSTATS is not set
@@ -679,13 +697,11 @@ CONFIG_DEBUG_SPINLOCK_SLEEP=y
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_DEBUG_KOBJECT is not set
# CONFIG_DEBUG_INFO is not set
-CONFIG_DEBUG_FS=y
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_LIST is not set
# CONFIG_FRAME_POINTER is not set
# CONFIG_UNWIND_INFO is not set
CONFIG_FORCED_INLINING=y
-CONFIG_HEADERS_CHECK=y
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_LKDTM is not set
@@ -699,10 +715,11 @@ CONFIG_HEADERS_CHECK=y
# Cryptographic options
#
CONFIG_CRYPTO=y
-CONFIG_CRYPTO_ALGAPI=m
-CONFIG_CRYPTO_BLKCIPHER=m
-CONFIG_CRYPTO_MANAGER=m
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_MANAGER=y
# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_MD4 is not set
# CONFIG_CRYPTO_MD5 is not set
@@ -713,8 +730,10 @@ CONFIG_CRYPTO_MANAGER=m
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_WP512 is not set
# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_GF128MUL is not set
CONFIG_CRYPTO_ECB=m
-CONFIG_CRYPTO_CBC=m
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_DES is not set
# CONFIG_CRYPTO_DES_S390 is not set
# CONFIG_CRYPTO_BLOWFISH is not set
@@ -740,8 +759,10 @@ CONFIG_CRYPTO_CBC=m
#
# Library routines
#
+CONFIG_BITREVERSE=m
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
CONFIG_CRC32=m
# CONFIG_LIBCRC32C is not set
CONFIG_PLIST=y
+CONFIG_IOMAP_COPY=y
diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index 443fa377d9f..2782cf9da5b 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -379,7 +379,7 @@ static void *diag204_alloc_vbuf(int pages)
static void *diag204_alloc_rbuf(void)
{
diag204_buf = (void*)__get_free_pages(GFP_KERNEL,0);
- if (diag204_buf)
+ if (!diag204_buf)
return ERR_PTR(-ENOMEM);
diag204_buf_pages = 1;
return diag204_buf;
@@ -521,7 +521,7 @@ __init int hypfs_diag_init(void)
}
rc = diag224_get_name_table();
if (rc) {
- diag224_delete_name_table();
+ diag204_free_buffer();
printk(KERN_ERR "hypfs: could not get name table.\n");
}
return rc;
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index a36bea1188d..9e9972e8a52 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -609,42 +609,12 @@ static ssize_t on_panic_store(struct subsystem *subsys, const char *buf,
static struct subsys_attribute on_panic_attr =
__ATTR(on_panic, 0644, on_panic_show, on_panic_store);
-static void print_fcp_block(struct ipl_parameter_block *fcp_block)
-{
- printk(KERN_EMERG "wwpn: %016llx\n",
- (unsigned long long)fcp_block->ipl_info.fcp.wwpn);
- printk(KERN_EMERG "lun: %016llx\n",
- (unsigned long long)fcp_block->ipl_info.fcp.lun);
- printk(KERN_EMERG "bootprog: %lld\n",
- (unsigned long long)fcp_block->ipl_info.fcp.bootprog);
- printk(KERN_EMERG "br_lba: %lld\n",
- (unsigned long long)fcp_block->ipl_info.fcp.br_lba);
- printk(KERN_EMERG "device: %llx\n",
- (unsigned long long)fcp_block->ipl_info.fcp.devno);
- printk(KERN_EMERG "opt: %x\n", fcp_block->ipl_info.fcp.opt);
-}
-
void do_reipl(void)
{
struct ccw_dev_id devid;
static char buf[100];
char loadparm[LOADPARM_LEN + 1];
- switch (reipl_type) {
- case IPL_TYPE_CCW:
- reipl_get_ascii_loadparm(loadparm);
- printk(KERN_EMERG "reboot on ccw device: 0.0.%04x\n",
- reipl_block_ccw->ipl_info.ccw.devno);
- printk(KERN_EMERG "loadparm = '%s'\n", loadparm);
- break;
- case IPL_TYPE_FCP:
- printk(KERN_EMERG "reboot on fcp device:\n");
- print_fcp_block(reipl_block_fcp);
- break;
- default:
- break;
- }
-
switch (reipl_method) {
case IPL_METHOD_CCW_CIO:
devid.devno = reipl_block_ccw->ipl_info.ccw.devno;
@@ -654,6 +624,7 @@ void do_reipl(void)
reipl_ccw_dev(&devid);
break;
case IPL_METHOD_CCW_VM:
+ reipl_get_ascii_loadparm(loadparm);
if (strlen(loadparm) == 0)
sprintf(buf, "IPL %X",
reipl_block_ccw->ipl_info.ccw.devno);
@@ -683,7 +654,6 @@ void do_reipl(void)
diag308(DIAG308_IPL, NULL);
break;
}
- printk(KERN_EMERG "reboot failed!\n");
signal_processor(smp_processor_id(), sigp_stop_and_store_status);
}
@@ -692,19 +662,6 @@ static void do_dump(void)
struct ccw_dev_id devid;
static char buf[100];
- switch (dump_type) {
- case IPL_TYPE_CCW:
- printk(KERN_EMERG "Automatic dump on ccw device: 0.0.%04x\n",
- dump_block_ccw->ipl_info.ccw.devno);
- break;
- case IPL_TYPE_FCP:
- printk(KERN_EMERG "Automatic dump on fcp device:\n");
- print_fcp_block(dump_block_fcp);
- break;
- default:
- return;
- }
-
switch (dump_method) {
case IPL_METHOD_CCW_CIO:
smp_send_stop();
@@ -1037,15 +994,21 @@ static void do_reset_calls(void)
}
extern void reset_mcck_handler(void);
+extern void reset_pgm_handler(void);
+extern __u32 dump_prefix_page;
void s390_reset_system(void)
{
struct _lowcore *lc;
- /* Stack for interrupt/machine check handler */
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 = (unsigned long) lc;
+
/* Disable prefixing */
set_prefix(0);
@@ -1056,5 +1019,11 @@ void s390_reset_system(void)
S390_lowcore.mcck_new_psw.mask = PSW_KERNEL_BITS & ~PSW_MASK_MCHECK;
S390_lowcore.mcck_new_psw.addr =
PSW_ADDR_AMODE | (unsigned long) &reset_mcck_handler;
+
+ /* Set new program check handler */
+ S390_lowcore.program_new_psw.mask = PSW_KERNEL_BITS & ~PSW_MASK_MCHECK;
+ S390_lowcore.program_new_psw.addr =
+ PSW_ADDR_AMODE | (unsigned long) &reset_pgm_handler;
+
do_reset_calls();
}
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S
index f9434d42ce9..c3f4d9b9508 100644
--- a/arch/s390/kernel/reipl.S
+++ b/arch/s390/kernel/reipl.S
@@ -16,7 +16,7 @@ do_reipl_asm: basr %r13,0
stm %r0,%r15,__LC_GPREGS_SAVE_AREA
stctl %c0,%c15,__LC_CREGS_SAVE_AREA
stam %a0,%a15,__LC_AREGS_SAVE_AREA
- stpx __LC_PREFIX_SAVE_AREA
+ mvc __LC_PREFIX_SAVE_AREA(4),dump_prefix_page-.Lpg0(%r13)
stckc .Lclkcmp-.Lpg0(%r13)
mvc __LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
stpt __LC_CPU_TIMER_SAVE_AREA
@@ -79,3 +79,7 @@ do_reipl_asm: basr %r13,0
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
+ .globl dump_prefix_page
+dump_prefix_page:
+ .long 0x00000000
+
diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S
index f18ef260ca2..dbb3eed3886 100644
--- a/arch/s390/kernel/reipl64.S
+++ b/arch/s390/kernel/reipl64.S
@@ -20,7 +20,7 @@ do_reipl_asm: basr %r13,0
stg %r0,__LC_GPREGS_SAVE_AREA-0x1000+8(%r1)
stctg %c0,%c15,__LC_CREGS_SAVE_AREA-0x1000(%r1)
stam %a0,%a15,__LC_AREGS_SAVE_AREA-0x1000(%r1)
- stpx __LC_PREFIX_SAVE_AREA-0x1000(%r1)
+ mvc __LC_PREFIX_SAVE_AREA-0x1000(4,%r1),dump_prefix_page-.Lpg0(%r13)
stfpc __LC_FP_CREG_SAVE_AREA-0x1000(%r1)
stckc .Lclkcmp-.Lpg0(%r13)
mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13)
@@ -103,3 +103,6 @@ do_reipl_asm: basr %r13,0
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
+ .globl dump_prefix_page
+dump_prefix_page:
+ .long 0x00000000
diff --git a/arch/s390/kernel/reset.S b/arch/s390/kernel/reset.S
index be8688c0665..8a87355161f 100644
--- a/arch/s390/kernel/reset.S
+++ b/arch/s390/kernel/reset.S
@@ -3,6 +3,7 @@
*
* Copyright (C) IBM Corp. 2006
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
+ * Michael Holzheu <holzheu@de.ibm.com>
*/
#include <asm/ptrace.h>
@@ -27,6 +28,26 @@ reset_mcck_handler:
s390_reset_mcck_handler:
.quad 0
+ .globl reset_pgm_handler
+reset_pgm_handler:
+ stmg %r0,%r15,__LC_SAVE_AREA
+ basr %r13,0
+0: lg %r15,__LC_PANIC_STACK # load panic stack
+ aghi %r15,-STACK_FRAME_OVERHEAD
+ lg %r1,s390_reset_pgm_handler-0b(%r13)
+ ltgr %r1,%r1
+ jz 1f
+ basr %r14,%r1
+ lmg %r0,%r15,__LC_SAVE_AREA
+ lpswe __LC_PGM_OLD_PSW
+1: lpswe disabled_wait_psw-0b(%r13)
+ .globl s390_reset_pgm_handler
+s390_reset_pgm_handler:
+ .quad 0
+ .align 8
+disabled_wait_psw:
+ .quad 0x0002000180000000,0x0000000000000000 + reset_pgm_handler
+
#else /* CONFIG_64BIT */
.globl reset_mcck_handler
@@ -45,4 +66,25 @@ reset_mcck_handler:
s390_reset_mcck_handler:
.long 0
+ .globl reset_pgm_handler
+reset_pgm_handler:
+ stm %r0,%r15,__LC_SAVE_AREA
+ basr %r13,0
+0: l %r15,__LC_PANIC_STACK # load panic stack
+ ahi %r15,-STACK_FRAME_OVERHEAD
+ l %r1,s390_reset_pgm_handler-0b(%r13)
+ ltr %r1,%r1
+ jz 1f
+ basr %r14,%r1
+ lm %r0,%r15,__LC_SAVE_AREA
+ lpsw __LC_PGM_OLD_PSW
+
+1: lpsw disabled_wait_psw-0b(%r13)
+ .globl s390_reset_pgm_handler
+s390_reset_pgm_handler:
+ .long 0
+disabled_wait_psw:
+ .align 8
+ .long 0x000a0000,0x00000000 + reset_pgm_handler
+
#endif /* CONFIG_64BIT */
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile
index b471b8550d0..2941a915d4e 100644
--- a/arch/x86_64/Makefile
+++ b/arch/x86_64/Makefile
@@ -45,9 +45,7 @@ cflags-kernel-$(CONFIG_REORDER) += -ffunction-sections
# actually it makes the kernel smaller too.
cflags-y += -fno-reorder-blocks
cflags-y += -Wno-sign-compare
-ifneq ($(CONFIG_UNWIND_INFO),y)
cflags-y += -fno-asynchronous-unwind-tables
-endif
ifneq ($(CONFIG_DEBUG_INFO),y)
# -fweb shrinks the kernel a bit, but the difference is very small
# it also messes up debugging, so don't use it for now.
diff --git a/arch/x86_64/defconfig b/arch/x86_64/defconfig
index 1a1c6a1a299..ac80b1209fc 100644
--- a/arch/x86_64/defconfig
+++ b/arch/x86_64/defconfig
@@ -1523,8 +1523,6 @@ CONFIG_DEBUG_FS=y
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_LIST is not set
# CONFIG_FRAME_POINTER is not set
-CONFIG_UNWIND_INFO=y
-CONFIG_STACK_UNWIND=y
# CONFIG_FORCED_INLINING is not set
# CONFIG_HEADERS_CHECK is not set
# CONFIG_RCU_TORTURE_TEST is not set
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index 601d332c4b7..9f5dac64aa8 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -1155,36 +1155,3 @@ ENTRY(call_softirq)
ret
CFI_ENDPROC
ENDPROC(call_softirq)
-
-#ifdef CONFIG_STACK_UNWIND
-ENTRY(arch_unwind_init_running)
- CFI_STARTPROC
- movq %r15, R15(%rdi)
- movq %r14, R14(%rdi)
- xchgq %rsi, %rdx
- movq %r13, R13(%rdi)
- movq %r12, R12(%rdi)
- xorl %eax, %eax
- movq %rbp, RBP(%rdi)
- movq %rbx, RBX(%rdi)
- movq (%rsp), %rcx
- movq %rax, R11(%rdi)
- movq %rax, R10(%rdi)
- movq %rax, R9(%rdi)
- movq %rax, R8(%rdi)
- movq %rax, RAX(%rdi)
- movq %rax, RCX(%rdi)
- movq %rax, RDX(%rdi)
- movq %rax, RSI(%rdi)
- movq %rax, RDI(%rdi)
- movq %rax, ORIG_RAX(%rdi)
- movq %rcx, RIP(%rdi)
- leaq 8(%rsp), %rcx
- movq $__KERNEL_CS, CS(%rdi)
- movq %rax, EFLAGS(%rdi)
- movq %rcx, RSP(%rdi)
- movq $__KERNEL_DS, SS(%rdi)
- jmpq *%rdx
- CFI_ENDPROC
-ENDPROC(arch_unwind_init_running)
-#endif
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index b54ccc07f37..1d9eb6db732 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -110,11 +110,6 @@ static inline void preempt_conditional_cli(struct pt_regs *regs)
}
int kstack_depth_to_print = 12;
-#ifdef CONFIG_STACK_UNWIND
-static int call_trace = 1;
-#else
-#define call_trace (-1)
-#endif
#ifdef CONFIG_KALLSYMS
void printk_address(unsigned long address)
@@ -217,32 +212,6 @@ static unsigned long *in_exception_stack(unsigned cpu, unsigned long stack,
return NULL;
}
-struct ops_and_data {
- struct stacktrace_ops *ops;
- void *data;
-};
-
-static int dump_trace_unwind(struct unwind_frame_info *info, void *context)
-{
- struct ops_and_data *oad = (struct ops_and_data *)context;
- int n = 0;
- unsigned long sp = UNW_SP(info);
-
- if (arch_unw_user_mode(info))
- return -1;
- while (unwind(info) == 0 && UNW_PC(info)) {
- n++;
- oad->ops->address(oad->data, UNW_PC(info));
- if (arch_unw_user_mode(info))
- break;
- if ((sp & ~(PAGE_SIZE - 1)) == (UNW_SP(info) & ~(PAGE_SIZE - 1))
- && sp > UNW_SP(info))
- break;
- sp = UNW_SP(info);
- }
- return n;
-}
-
#define MSG(txt) ops->warning(data, txt)
/*
@@ -270,40 +239,6 @@ void dump_trace(struct task_struct *tsk, struct pt_regs *regs,
if (!tsk)
tsk = current;
- if (call_trace >= 0) {
- int unw_ret = 0;
- struct unwind_frame_info info;
- struct ops_and_data oad = { .ops = ops, .data = data };
-
- if (regs) {
- if (unwind_init_frame_info(&info, tsk, regs) == 0)
- unw_ret = dump_trace_unwind(&info, &oad);
- } else if (tsk == current)
- unw_ret = unwind_init_running(&info, dump_trace_unwind,
- &oad);
- else {
- if (unwind_init_blocked(&info, tsk) == 0)
- unw_ret = dump_trace_unwind(&info, &oad);
- }
- if (unw_ret > 0) {
- if (call_trace == 1 && !arch_unw_user_mode(&info)) {
- ops->warning_symbol(data,
- "DWARF2 unwinder stuck at %s",
- UNW_PC(&info));
- if ((long)UNW_SP(&info) < 0) {
- MSG("Leftover inexact backtrace:");
- stack = (unsigned long *)UNW_SP(&info);
- if (!stack)
- goto out;
- } else
- MSG("Full inexact backtrace again:");
- } else if (call_trace >= 1)
- goto out;
- else
- MSG("Full inexact backtrace again:");
- } else
- MSG("Inexact backtrace:");
- }
if (!stack) {
unsigned long dummy;
stack = &dummy;
@@ -387,7 +322,6 @@ void dump_trace(struct task_struct *tsk, struct pt_regs *regs,
tinfo = current_thread_info();
HANDLE_STACK (valid_stack_ptr(tinfo, stack));
#undef HANDLE_STACK
-out:
put_cpu();
}
EXPORT_SYMBOL(dump_trace);
@@ -1188,21 +1122,3 @@ static int __init kstack_setup(char *s)
return 0;
}
early_param("kstack", kstack_setup);
-
-#ifdef CONFIG_STACK_UNWIND
-static int __init call_trace_setup(char *s)
-{
- if (!s)
- return -EINVAL;
- if (strcmp(s, "old") == 0)
- call_trace = -1;
- else if (strcmp(s, "both") == 0)
- call_trace = 0;
- else if (strcmp(s, "newfallback") == 0)
- call_trace = 1;
- else if (strcmp(s, "new") == 0)
- call_trace = 2;
- return 0;
-}
-early_param("call_trace", call_trace_setup);
-#endif
diff --git a/arch/x86_64/kernel/vmlinux.lds.S b/arch/x86_64/kernel/vmlinux.lds.S
index 514be5dd230..1e54ddf2338 100644
--- a/arch/x86_64/kernel/vmlinux.lds.S
+++ b/arch/x86_64/kernel/vmlinux.lds.S
@@ -221,9 +221,7 @@ SECTIONS
/* Sections to be discarded */
/DISCARD/ : {
*(.exitcall.exit)
-#ifndef CONFIG_UNWIND_INFO
*(.eh_frame)
-#endif
}
STABS_DEBUG
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-07 16:06:40 +0000