diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2026-01-09 16:31:40 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2026-01-27 12:16:16 +0100 |
| commit | ee44f4e7ebb56f1a2a3aaed8b01ea052fc225680 (patch) | |
| tree | fe248efae5536b506d79ca01148dad9ec68ba470 /arch | |
| parent | 8cbfd13601af7d71bb86c2ea686489a6f139c0ba (diff) | |
s390/traps: Copy monitor code to pt_regs
In case of a monitor call program check the CPU stores the monitor code to
lowcore. Let the program check handler copy it to the pt_regs structure so
it can be used by the monitor call exception handler.
Instead of increasing the pt_regs size add a union which contains both
orig_gpr2 and monitor_code, since orig_gpr2 is not used in case of a
program check.
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/include/asm/ptrace.h | 5 | ||||
| -rw-r--r-- | arch/s390/kernel/traps.c | 1 |
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index e6ec0ccf3d73..aaceb1d9110a 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -120,7 +120,10 @@ struct pt_regs { unsigned long gprs[NUM_GPRS]; }; }; - unsigned long orig_gpr2; + union { + unsigned long orig_gpr2; + unsigned long monitor_code; + }; union { struct { unsigned int int_code; diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index de63e98e724b..b2d6d7cc3b17 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -298,6 +298,7 @@ void noinstr __do_pgm_check(struct pt_regs *regs) teid.val = lc->trans_exc_code; regs->int_code = lc->pgm_int_code; regs->int_parm_long = teid.val; + regs->monitor_code = lc->monitor_code; /* * In case of a guest fault, short-circuit the fault handler and return. * This way the sie64a() function will return 0; fault address and |