linux/arch/s390
Christian Borntraeger bcc6525fb2 [S390] s390: fix single stepping on svc0
On s390 there are two ways of specifying the system call number for
the svc instruction. The standard way is to use the immediate field
in the instruction (or to use EXecute for values unknown during
assemble time). This can encode 256 system calls.
The kernel ABI also allows to put the system call number in r1 and
then execute svc 0 to enable system call numbers > 255.

It turns out that single stepping svc 0 is broken, since the PER
program check handler uses r1. We have to use a different register.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-11-13 15:45:03 +01:00
..
appldata sysctl: remove "struct file *" argument of ->proc_handler 2009-09-24 07:21:04 -07:00
boot kbuild: use INSTALLKERNEL to select customized installkernel script 2009-09-20 12:18:14 +02:00
crypto crypto: sha-s390 - Fix warnings in import function 2009-09-05 16:27:35 +10:00
hypfs [S390] hypfs: Use subcode 6 if subcode 7 is not available 2009-10-14 12:43:52 +02:00
include/asm [S390] cputime: fix overflow on 31 bit systems 2009-10-29 15:05:13 +01:00
kernel [S390] s390: fix single stepping on svc0 2009-11-13 15:45:03 +01:00
kvm KVM: s390: fix memsize >= 4G 2009-10-04 13:57:23 +02:00
lib [S390] Add EX_TABLE for addressing exception in usercopy functions. 2009-10-06 10:35:10 +02:00
math-emu [S390] remove -traditional 2008-04-30 13:38:44 +02:00
mm [S390] fix build breakage with CONFIG_AIO=n 2009-10-06 10:35:05 +02:00
oprofile Combine instrumentation menus in kernel/Kconfig.instrumentation 2007-10-19 11:53:54 -07:00
Kconfig perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
Kconfig.debug generic debug pagealloc: build fix 2009-04-02 19:04:48 -07:00
Makefile [S390] hibernation: merge files and move to kernel/ 2009-09-11 10:29:45 +02:00
defconfig [S390] Update default configuration. 2009-09-22 22:58:46 +02:00