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authorIlya Leoshkevich <iii@linux.ibm.com>2020-07-22 23:58:54 +0200
committerHeiko Carstens <hca@linux.ibm.com>2020-07-27 10:33:28 +0200
commit73d6eb48d26930f0cbdc8bf1ccb0ad964e7d2b90 (patch)
tree4cde972f30659982c9c0d4e79960b41021c368c1 /arch/s390/include/asm/ptrace.h
parent4631f3ca493a7c8f9f31aef45fc0fc0e182155b7 (diff)
s390: enable HAVE_FUNCTION_ERROR_INJECTION
This kernel feature is required for enabling BPF_KPROBE_OVERRIDE. Define override_function_with_return() and regs_set_return_value() functions, and fix compile errors in syscall_wrapper.h. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/ptrace.h')
-rw-r--r--arch/s390/include/asm/ptrace.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index f009a13afe71..16b3e4396312 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -184,5 +184,10 @@ static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
return regs->gprs[15];
}
+static inline void regs_set_return_value(struct pt_regs *regs, unsigned long rc)
+{
+ regs->gprs[2] = rc;
+}
+
#endif /* __ASSEMBLY__ */
#endif /* _S390_PTRACE_H */