Christian Borntraeger 9e74a6b898 [S390] kernel: show last breaking-event-address on oops ... Newer s390 models have a breaking-event-address-recording register. Each time an instruction causes a break in the sequential instruction execution, the address is saved in that hardware register. On a program interrupt the address is copied to the lowcore address 272-279, which makes it software accessible. This patch changes the program check handler and the stack overflow checker to copy the value into the pt_regs argument. The oops output is enhanced to show the last known breaking address. It might give additional information if the stack trace is corrupted. The feature is only available on 64 bit. The new oops output looks like: [---------snip----------] Modules linked in: vmcp sunrpc qeth_l2 dm_mod qeth ccwgroup CPU: 2 Not tainted 2.6.24zlive-host #8 Process modprobe (pid: 4788, task: 00000000bf3d8718, ksp: 00000000b2b0b8e0) Krnl PSW : 0704200180000000 000003e000020028 (vmcp_init+0x28/0xe4 [vmcp]) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:2 PM:0 EA:3 Krnl GPRS: 0000000004000002 000003e000020000 0000000000000000 0000000000000001 000000000015734c ffffffffffffffff 000003e0000b3b00 0000000000000000 000003e00007ca30 00000000b5bb5d40 00000000b5bb5800 000003e0000b3b00 000003e0000a2000 00000000003ecf50 00000000b2b0bd50 00000000b2b0bcb0 Krnl Code: 000003e000020018: c0c000040ff4 larl %r12,3e0000a2000 000003e00002001e: e3e0f0000024 stg %r14,0(%r15) 000003e000020024: a7f40001 brc 15,3e000020026 >000003e000020028: e310c0100004 lg %r1,16(%r12) 000003e00002002e: c020000413dc larl %r2,3e0000a27e6 000003e000020034: c0a00004aee6 larl %r10,3e0000b5e00 000003e00002003a: a7490001 lghi %r4,1 000003e00002003e: a75900f0 lghi %r5,240 Call Trace: ([<000000000014b300>] blocking_notifier_call_chain+0x2c/0x40) [<000000000015735c>] sys_init_module+0x19d8/0x1b08 [<0000000000110afc>] sysc_noemu+0x10/0x16 [<000002000011cda2>] 0x2000011cda2 Last Breaking-Event-Address: [<000003e000020024>] vmcp_init+0x24/0xe4 [vmcp] [---------snip----------] Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>		2008-04-17 07:47:07 +02:00
..
appldata	[S390] appldata: remove unused binary sysctls.	2007-11-20 11:13:45 +01:00
boot	[PATCH] use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh	2005-06-23 09:45:07 -07:00
crypto	[S390] crypto: use more descriptive function names for init/exit routines.	2008-04-17 07:47:03 +02:00
hypfs	Kobject: convert arch/* from kobject_unregister() to kobject_put()	2008-01-24 20:40:39 -08:00
kernel	[S390] kernel: show last breaking-event-address on oops	2008-04-17 07:47:07 +02:00
lib	[S390] uaccess: Always access the correct address space.	2008-04-17 07:47:06 +02:00
math-emu	[S390] Calibrate delay and bogomips.	2007-02-05 21:18:31 +01:00
mm	[S390] Fix a lot of sparse warnings.	2008-04-17 07:47:06 +02:00
oprofile	Combine instrumentation menus in kernel/Kconfig.instrumentation	2007-10-19 11:53:54 -07:00
defconfig	[S390] cpu topology support for s390.	2008-04-17 07:47:01 +02:00
Kconfig	[S390] Convert s390 to GENERIC_CLOCKEVENTS.	2008-04-17 07:47:05 +02:00
Kconfig.debug	[S390] DEBUG_PAGEALLOC support for s390.	2008-02-05 16:50:54 +01:00
Makefile	kbuild: enable 'make AFLAGS=...' to add additional options to AS	2007-10-15 21:59:31 +02:00