Commit 6a2df3a8 authored by Martin Schwidefsky's avatar Martin Schwidefsky Committed by Martin Schwidefsky

[S390] improve irq tracing code in entry[64].S

The system call path in entry[64].S is run with interrupts enabled.
Remove the irq tracing check from the system call exit code. If a
program check interrupted a context enabled for interrupts do a
call to trace_irq_off_caller in the program check handler before
branching to the system call exit code.
Restructure the system call and io interrupt return code to avoid
avoid the lpsw[e] to disable machine checks.
Signed-off-by: default avatarMartin Schwidefsky <>
parent 43d399d2
......@@ -459,11 +459,6 @@ extern void (*_machine_power_off)(void);
#define arch_align_stack(x) (x)
extern psw_t sysc_restore_trace_psw;
extern psw_t io_restore_trace_psw;
static inline int tprot(unsigned long addr)
int rc = -EFAULT;
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......@@ -369,10 +369,6 @@ static void setup_addressing_mode(void)
pr_info("Address spaces switched, "
"mvcos not available\n");
sysc_restore_trace_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK;
io_restore_trace_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK;
static void __init
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