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-rw-r--r--arch/um/include/os.h1
-rw-r--r--arch/um/include/sysdep-i386/tls.h4
-rw-r--r--arch/um/include/user_util.h3
3 files changed, 8 insertions, 0 deletions
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 1b780b5dacbe..f88856c28a66 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -173,6 +173,7 @@ extern int os_fchange_dir(int fd);
extern void os_early_checks(void);
extern int can_do_skas(void);
extern void os_check_bugs(void);
+extern void check_host_supports_tls(int *supports_tls, int *tls_min);
/* Make sure they are clear when running in TT mode. Required by
* SEGV_MAYBE_FIXABLE */
diff --git a/arch/um/include/sysdep-i386/tls.h b/arch/um/include/sysdep-i386/tls.h
index 938f953b26cc..918fd3c5ff9c 100644
--- a/arch/um/include/sysdep-i386/tls.h
+++ b/arch/um/include/sysdep-i386/tls.h
@@ -25,4 +25,8 @@ typedef struct um_dup_user_desc {
typedef struct user_desc user_desc_t;
# endif /* __KERNEL__ */
+
+#define GDT_ENTRY_TLS_MIN_I386 6
+#define GDT_ENTRY_TLS_MIN_X86_64 12
+
#endif /* _SYSDEP_TLS_H */
diff --git a/arch/um/include/user_util.h b/arch/um/include/user_util.h
index 615f2f0a32d0..fe0c29b5144d 100644
--- a/arch/um/include/user_util.h
+++ b/arch/um/include/user_util.h
@@ -8,6 +8,9 @@
#include "sysdep/ptrace.h"
+/* Copied from kernel.h */
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
extern int mode_tt;