diff --git a/gen/modules/general.h b/gen/modules/general.h
index a669134..765b5b3 100644
--- a/gen/modules/general.h
+++ b/gen/modules/general.h
@@ -253,16 +253,20 @@ typedef __statfs_word __fsword_t;
 #define TFD_SETTIME_FLAGS TFD_TIMER_ABSTIME
 
 struct user_desc {
-        unsigned int  entry_number;
-        unsigned int  base_addr;
-        unsigned int  limit;
-        unsigned int  seg_32bit:1;
-        unsigned int  contents:2;
-        unsigned int  read_exec_only:1;
-        unsigned int  limit_in_pages:1;
-        unsigned int  seg_not_present:1;
-        unsigned int  useable:1;
+    unsigned entry_number;
+    unsigned base_addr;
+    unsigned limit;
+    unsigned seg_32bit:1;
+    unsigned contents:2;
+    unsigned read_exec_only:1;
+    unsigned limit_in_pages:1;
+    unsigned seg_not_present:1;
+    unsigned useable:1;
 #ifdef __x86_64__
-        unsigned int  lm:1;
+    unsigned lm:1;
 #endif
 };
+
+#if defined(__x86_64__) || defined(__i386__)
+#define ARCH_SET_FS 0x1002
+#endif
diff --git a/src/v2_6_32/x86/general.rs b/src/v2_6_32/x86/general.rs
index 7e34831..daefa04 100644
--- a/src/v2_6_32/x86/general.rs
+++ b/src/v2_6_32/x86/general.rs
@@ -1711,6 +1711,7 @@ pub const TFD_NONBLOCK: u32 = 2048;
 pub const TFD_SHARED_FCNTL_FLAGS: u32 = 526336;
 pub const TFD_CREATE_FLAGS: u32 = 526336;
 pub const TFD_SETTIME_FLAGS: u32 = 1;
+pub const ARCH_SET_FS: u32 = 4098;
 pub type size_t = crate::ctypes::c_uint;
 pub type ssize_t = crate::ctypes::c_int;
 pub type __s8 = crate::ctypes::c_schar;
diff --git a/src/v2_6_32/x86_64/general.rs b/src/v2_6_32/x86_64/general.rs
index 0bc59d7..c70c1d0 100644
--- a/src/v2_6_32/x86_64/general.rs
+++ b/src/v2_6_32/x86_64/general.rs
@@ -1674,6 +1674,7 @@ pub const TFD_NONBLOCK: u32 = 2048;
 pub const TFD_SHARED_FCNTL_FLAGS: u32 = 526336;
 pub const TFD_CREATE_FLAGS: u32 = 526336;
 pub const TFD_SETTIME_FLAGS: u32 = 1;
+pub const ARCH_SET_FS: u32 = 4098;
 pub type size_t = crate::ctypes::c_ulong;
 pub type ssize_t = crate::ctypes::c_long;
 pub type __s8 = crate::ctypes::c_schar;
diff --git a/src/v5_11/x86/general.rs b/src/v5_11/x86/general.rs
index 1618fd8..4802241 100644
--- a/src/v5_11/x86/general.rs
+++ b/src/v5_11/x86/general.rs
@@ -2258,6 +2258,7 @@ pub const EPOLLET: u32 = 2147483648;
 pub const TFD_SHARED_FCNTL_FLAGS: u32 = 526336;
 pub const TFD_CREATE_FLAGS: u32 = 526336;
 pub const TFD_SETTIME_FLAGS: u32 = 1;
+pub const ARCH_SET_FS: u32 = 4098;
 pub type size_t = crate::ctypes::c_uint;
 pub type ssize_t = crate::ctypes::c_int;
 pub type __s8 = crate::ctypes::c_schar;
diff --git a/src/v5_11/x86_64/general.rs b/src/v5_11/x86_64/general.rs
index 90f4b75..378944c 100644
--- a/src/v5_11/x86_64/general.rs
+++ b/src/v5_11/x86_64/general.rs
@@ -2186,6 +2186,7 @@ pub const EPOLLET: u32 = 2147483648;
 pub const TFD_SHARED_FCNTL_FLAGS: u32 = 526336;
 pub const TFD_CREATE_FLAGS: u32 = 526336;
 pub const TFD_SETTIME_FLAGS: u32 = 1;
+pub const ARCH_SET_FS: u32 = 4098;
 pub type size_t = crate::ctypes::c_ulong;
 pub type ssize_t = crate::ctypes::c_long;
 pub type __s8 = crate::ctypes::c_schar;
diff --git a/src/v5_4/x86/general.rs b/src/v5_4/x86/general.rs
index ba8642e..89e8795 100644
--- a/src/v5_4/x86/general.rs
+++ b/src/v5_4/x86/general.rs
@@ -2207,6 +2207,7 @@ pub const EPOLLET: u32 = 2147483648;
 pub const TFD_SHARED_FCNTL_FLAGS: u32 = 526336;
 pub const TFD_CREATE_FLAGS: u32 = 526336;
 pub const TFD_SETTIME_FLAGS: u32 = 1;
+pub const ARCH_SET_FS: u32 = 4098;
 pub type size_t = crate::ctypes::c_uint;
 pub type ssize_t = crate::ctypes::c_int;
 pub type __s8 = crate::ctypes::c_schar;
diff --git a/src/v5_4/x86_64/general.rs b/src/v5_4/x86_64/general.rs
index d5372ab..81f3fdd 100644
--- a/src/v5_4/x86_64/general.rs
+++ b/src/v5_4/x86_64/general.rs
@@ -2135,6 +2135,7 @@ pub const EPOLLET: u32 = 2147483648;
 pub const TFD_SHARED_FCNTL_FLAGS: u32 = 526336;
 pub const TFD_CREATE_FLAGS: u32 = 526336;
 pub const TFD_SETTIME_FLAGS: u32 = 1;
+pub const ARCH_SET_FS: u32 = 4098;
 pub type size_t = crate::ctypes::c_ulong;
 pub type ssize_t = crate::ctypes::c_long;
 pub type __s8 = crate::ctypes::c_schar;