diff --git a/linux-user/aarch64/target_syscall.h b/linux-user/aarch64/target_syscall.h
index 76f6c3391d..508219d62a 100644
--- a/linux-user/aarch64/target_syscall.h
+++ b/linux-user/aarch64/target_syscall.h
@@ -15,7 +15,6 @@ struct target_pt_regs {
 #endif
 #define UNAME_MINIMUM_RELEASE "3.8.0"
 #define TARGET_CLONE_BACKWARDS
-#define TARGET_MINSIGSTKSZ       2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/alpha/target_syscall.h b/linux-user/alpha/target_syscall.h
index 03091bf0a8..fda3a49f29 100644
--- a/linux-user/alpha/target_syscall.h
+++ b/linux-user/alpha/target_syscall.h
@@ -63,7 +63,6 @@ struct target_pt_regs {
 #define TARGET_UAC_NOPRINT		1
 #define TARGET_UAC_NOFIX		2
 #define TARGET_UAC_SIGBUS		4
-#define TARGET_MINSIGSTKSZ              4096
 #define TARGET_MCL_CURRENT     0x2000
 #define TARGET_MCL_FUTURE      0x4000
 #define TARGET_MCL_ONFAULT     0x8000
diff --git a/linux-user/arm/target_syscall.h b/linux-user/arm/target_syscall.h
index e870ed7a54..f04f9c9e3d 100644
--- a/linux-user/arm/target_syscall.h
+++ b/linux-user/arm/target_syscall.h
@@ -27,7 +27,6 @@ struct target_pt_regs {
 
 #define TARGET_CLONE_BACKWARDS
 
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/cris/target_syscall.h b/linux-user/cris/target_syscall.h
index 19e1281403..0b5ebf1f02 100644
--- a/linux-user/cris/target_syscall.h
+++ b/linux-user/cris/target_syscall.h
@@ -39,7 +39,6 @@ struct target_pt_regs {
 };
 
 #define TARGET_CLONE_BACKWARDS2
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/hppa/target_syscall.h b/linux-user/hppa/target_syscall.h
index 0018bcb5c4..4b382c1fcf 100644
--- a/linux-user/hppa/target_syscall.h
+++ b/linux-user/hppa/target_syscall.h
@@ -22,7 +22,6 @@ struct target_pt_regs {
 #define UNAME_MACHINE "parisc"
 #define UNAME_MINIMUM_RELEASE "2.6.32"
 #define TARGET_CLONE_BACKWARDS
-#define TARGET_MINSIGSTKSZ       2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/i386/target_syscall.h b/linux-user/i386/target_syscall.h
index ed356b3908..aaade06b13 100644
--- a/linux-user/i386/target_syscall.h
+++ b/linux-user/i386/target_syscall.h
@@ -150,7 +150,6 @@ struct target_vm86plus_struct {
 #define UNAME_MINIMUM_RELEASE "2.6.32"
 
 #define TARGET_CLONE_BACKWARDS
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/m68k/target_syscall.h b/linux-user/m68k/target_syscall.h
index 23359a6299..8d4ddbd76c 100644
--- a/linux-user/m68k/target_syscall.h
+++ b/linux-user/m68k/target_syscall.h
@@ -20,7 +20,6 @@ struct target_pt_regs {
 #define UNAME_MACHINE "m68k"
 #define UNAME_MINIMUM_RELEASE "2.6.32"
 
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/microblaze/target_syscall.h b/linux-user/microblaze/target_syscall.h
index 7f653db34f..43362a1664 100644
--- a/linux-user/microblaze/target_syscall.h
+++ b/linux-user/microblaze/target_syscall.h
@@ -49,7 +49,6 @@ struct target_pt_regs {
 };
 
 #define TARGET_CLONE_BACKWARDS
-#define TARGET_MINSIGSTKSZ      2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/mips/target_syscall.h b/linux-user/mips/target_syscall.h
index f59057493a..7a82661fdb 100644
--- a/linux-user/mips/target_syscall.h
+++ b/linux-user/mips/target_syscall.h
@@ -24,7 +24,6 @@ struct target_pt_regs {
 #define UNAME_MINIMUM_RELEASE "2.6.32"
 
 #define TARGET_CLONE_BACKWARDS
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/mips64/target_syscall.h b/linux-user/mips64/target_syscall.h
index cd1e1b4969..2c7a881c74 100644
--- a/linux-user/mips64/target_syscall.h
+++ b/linux-user/mips64/target_syscall.h
@@ -21,7 +21,6 @@ struct target_pt_regs {
 #define UNAME_MINIMUM_RELEASE "2.6.32"
 
 #define TARGET_CLONE_BACKWARDS
-#define TARGET_MINSIGSTKSZ      2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/nios2/target_syscall.h b/linux-user/nios2/target_syscall.h
index 78006c24d4..561b28d281 100644
--- a/linux-user/nios2/target_syscall.h
+++ b/linux-user/nios2/target_syscall.h
@@ -30,7 +30,6 @@ struct target_pt_regs {
     unsigned long  orig_r7;
 };
 
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/openrisc/target_syscall.h b/linux-user/openrisc/target_syscall.h
index ef0d89a551..7fe5b73d3b 100644
--- a/linux-user/openrisc/target_syscall.h
+++ b/linux-user/openrisc/target_syscall.h
@@ -15,7 +15,6 @@ struct target_pt_regs {
 #define UNAME_MACHINE "openrisc"
 #define UNAME_MINIMUM_RELEASE "2.6.32"
 
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/ppc/target_syscall.h b/linux-user/ppc/target_syscall.h
index b9c4b813d3..8b364697d4 100644
--- a/linux-user/ppc/target_syscall.h
+++ b/linux-user/ppc/target_syscall.h
@@ -71,7 +71,6 @@ struct target_revectored_struct {
 
 #define TARGET_CLONE_BACKWARDS
 
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 0x2000
 #define TARGET_MCL_FUTURE  0x4000
 #define TARGET_MCL_ONFAULT 0x8000
diff --git a/linux-user/riscv/target_syscall.h b/linux-user/riscv/target_syscall.h
index 9b13161324..7601f10c28 100644
--- a/linux-user/riscv/target_syscall.h
+++ b/linux-user/riscv/target_syscall.h
@@ -51,7 +51,6 @@ struct target_pt_regs {
 #define UNAME_MINIMUM_RELEASE "4.15.0"
 #endif
 
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/s390x/target_syscall.h b/linux-user/s390x/target_syscall.h
index 94f84178db..4018988a25 100644
--- a/linux-user/s390x/target_syscall.h
+++ b/linux-user/s390x/target_syscall.h
@@ -27,7 +27,6 @@ struct target_pt_regs {
 #define UNAME_MINIMUM_RELEASE "2.6.32"
 
 #define TARGET_CLONE_BACKWARDS2
-#define TARGET_MINSIGSTKSZ        2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/sh4/target_syscall.h b/linux-user/sh4/target_syscall.h
index c1437adafe..148398855d 100644
--- a/linux-user/sh4/target_syscall.h
+++ b/linux-user/sh4/target_syscall.h
@@ -15,7 +15,6 @@ struct target_pt_regs {
 #define UNAME_MACHINE "sh4"
 #define UNAME_MINIMUM_RELEASE "2.6.32"
 
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4
diff --git a/linux-user/sparc/target_syscall.h b/linux-user/sparc/target_syscall.h
index 087b39d39c..be77e44eb8 100644
--- a/linux-user/sparc/target_syscall.h
+++ b/linux-user/sparc/target_syscall.h
@@ -34,7 +34,6 @@ struct target_pt_regs {
  * and copy_thread().
  */
 #define TARGET_CLONE_BACKWARDS
-#define TARGET_MINSIGSTKSZ      4096
 #define TARGET_MCL_CURRENT 0x2000
 #define TARGET_MCL_FUTURE  0x4000
 #define TARGET_MCL_ONFAULT 0x8000
diff --git a/linux-user/x86_64/target_syscall.h b/linux-user/x86_64/target_syscall.h
index 3ecccb72be..fb558345d3 100644
--- a/linux-user/x86_64/target_syscall.h
+++ b/linux-user/x86_64/target_syscall.h
@@ -100,7 +100,6 @@ struct target_msqid64_ds {
 #define TARGET_ARCH_SET_FS 0x1002
 #define TARGET_ARCH_GET_FS 0x1003
 #define TARGET_ARCH_GET_GS 0x1004
-#define TARGET_MINSIGSTKSZ 2048
 #define TARGET_MCL_CURRENT 1
 #define TARGET_MCL_FUTURE  2
 #define TARGET_MCL_ONFAULT 4