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Update s390x syscall wrappers for RHEL-9.6 #1426

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merged 1 commit into from
Dec 12, 2024
+48 −32
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Update s390x syscall wrappers for RHEL-9.6 #1426

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80 changes: 48 additions & 32 deletions kmod/patch/kpatch-syscall.h
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Original file line number Diff line number Diff line change
Expand Up @@ -91,40 +91,23 @@

#elif defined(CONFIG_S390)

/* arch/s390/include/asm/syscall_wrapper.h versions */
# if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 3, 0)
# define KPATCH_SYSCALL_WRAPPERS_V2
# else
# define KPATCH_SYSCALL_WRAPPERS_V1
# endif

#define __KPATCH_S390_SYS_STUBx(x, name, ...) \
long __s390_sys##name(struct pt_regs *regs); \
ALLOW_ERROR_INJECTION(__s390_sys##name, ERRNO); \
static inline long ___se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__)); \
long __s390_sys##name(struct pt_regs *regs) \
{ \
return ___se_sys##name(SC_S390_REGS_TO_ARGS(x, __VA_ARGS__)); \
} \
static inline long ___se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__)) \
{ \
__MAP(x, __SC_TEST, __VA_ARGS__); \
return __kpatch_do_sys##name(__MAP(x, __SC_COMPAT_CAST, __VA_ARGS__)); \
}
# if defined(RHEL_RELEASE_CODE)
# if RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(9, 6)
# define KPATCH_SYSCALL_WRAPPERS_V2
# else
# define KPATCH_SYSCALL_WRAPPERS_V1
# endif
# endif

#define __KPATCH_SYSCALL_DEFINEx(x, name, ...) \
long __s390x_sys##name(struct pt_regs *regs); \
ALLOW_ERROR_INJECTION(__s390x_sys##name, ERRNO); \
static inline long __se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__)); \
static inline long __kpatch_do_sys##name(__MAP(x, __SC_DECL, __VA_ARGS__)); \
__KPATCH_S390_SYS_STUBx(x, name, __VA_ARGS__); \
long __s390x_sys##name(struct pt_regs *regs) \
{ \
return __se_sys##name(SC_S390_REGS_TO_ARGS(x, __VA_ARGS__)); \
} \
static inline long __se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__)) \
{ \
__MAP(x, __SC_TEST, __VA_ARGS__); \
return __kpatch_do_sys##name(__MAP(x, __SC_CAST, __VA_ARGS__)); \
} \
static inline long __kpatch_do_sys##name(__MAP(x, __SC_DECL, __VA_ARGS__))
# else

/* arch/s390/include/asm/syscall_wrapper.h versions */
#if defined(KPATCH_SYSCALL_WRAPPERS_V1)

#define __KPATCH_S390_SYS_STUBx(x, name, ...) \
long __s390_sys##name(struct pt_regs *regs); \
Expand Down Expand Up @@ -157,7 +140,40 @@
__diag_pop(); \
static inline long __kpatch_do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))

#endif /* LINUX_VERSION_CODE */
# else /* KPATCH_SYSCALL_WRAPPERS_V2 */

#define __KPATCH_S390_SYS_STUBx(x, name, ...) \
long __s390_sys##name(struct pt_regs *regs); \
ALLOW_ERROR_INJECTION(__s390_sys##name, ERRNO); \
static inline long ___se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__)); \
long __s390_sys##name(struct pt_regs *regs) \
{ \
return ___se_sys##name(SC_S390_REGS_TO_ARGS(x, __VA_ARGS__)); \
} \
static inline long ___se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__)) \
{ \
__MAP(x, __SC_TEST, __VA_ARGS__); \
return __kpatch_do_sys##name(__MAP(x, __SC_COMPAT_CAST, __VA_ARGS__)); \
}

#define __KPATCH_SYSCALL_DEFINEx(x, name, ...) \
long __s390x_sys##name(struct pt_regs *regs); \
ALLOW_ERROR_INJECTION(__s390x_sys##name, ERRNO); \
static inline long __se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__)); \
static inline long __kpatch_do_sys##name(__MAP(x, __SC_DECL, __VA_ARGS__)); \
__KPATCH_S390_SYS_STUBx(x, name, __VA_ARGS__); \
long __s390x_sys##name(struct pt_regs *regs) \
{ \
return __se_sys##name(SC_S390_REGS_TO_ARGS(x, __VA_ARGS__)); \
} \
static inline long __se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__)) \
{ \
__MAP(x, __SC_TEST, __VA_ARGS__); \
return __kpatch_do_sys##name(__MAP(x, __SC_CAST, __VA_ARGS__)); \
} \
static inline long __kpatch_do_sys##name(__MAP(x, __SC_DECL, __VA_ARGS__))

#endif /* KPATCH_SYSCALL_WRAPPERS_V2 */

#elif defined(CONFIG_PPC64)

Expand Down
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