diff --git a/arch/riscv/include/asm/Kbuild b/arch/riscv/include/asm/Kbuild
index 504f8b7e72d4..5c589770f2a8 100644
--- a/arch/riscv/include/asm/Kbuild
+++ b/arch/riscv/include/asm/Kbuild
@@ -1,4 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
+syscall-y += syscall_table_32.h
+syscall-y += syscall_table_64.h
+
 generic-y += early_ioremap.h
 generic-y += flat.h
 generic-y += kvm_para.h
diff --git a/arch/riscv/include/asm/syscall_table.h b/arch/riscv/include/asm/syscall_table.h
new file mode 100644
index 000000000000..0c2d61782813
--- /dev/null
+++ b/arch/riscv/include/asm/syscall_table.h
@@ -0,0 +1,7 @@
+#include <asm/bitsperlong.h>
+
+#if __BITS_PER_LONG == 64
+#include <asm/syscall_table_64.h>
+#else
+#include <asm/syscall_table_32.h>
+#endif
diff --git a/arch/riscv/include/asm/unistd.h b/arch/riscv/include/asm/unistd.h
index 221630bdbd07..e6d904fa67c5 100644
--- a/arch/riscv/include/asm/unistd.h
+++ b/arch/riscv/include/asm/unistd.h
@@ -3,11 +3,6 @@
  * Copyright (C) 2012 Regents of the University of California
  */
 
-/*
- * There is explicitly no include guard here because this file is expected to
- * be included multiple times.
- */
-
 #define __ARCH_WANT_SYS_CLONE
 
 #ifdef CONFIG_COMPAT
@@ -21,6 +16,14 @@
 #define __ARCH_WANT_COMPAT_FADVISE64_64
 #endif
 
+#if defined(__LP64__) && !defined(__SYSCALL_COMPAT)
+#define __ARCH_WANT_NEW_STAT
+#define __ARCH_WANT_SET_GET_RLIMIT
+#endif /* __LP64__ */
+
+#define __ARCH_WANT_MEMFD_SECRET
+
+
 #include <uapi/asm/unistd.h>
 
 #define NR_syscalls (__NR_syscalls)
diff --git a/arch/riscv/include/uapi/asm/Kbuild b/arch/riscv/include/uapi/asm/Kbuild
index f66554cd5c45..89ac01faa5ae 100644
--- a/arch/riscv/include/uapi/asm/Kbuild
+++ b/arch/riscv/include/uapi/asm/Kbuild
@@ -1 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
+syscall-y += unistd_32.h
+syscall-y += unistd_64.h
diff --git a/arch/riscv/include/uapi/asm/unistd.h b/arch/riscv/include/uapi/asm/unistd.h
index 328520defc13..81896bbbf727 100644
--- a/arch/riscv/include/uapi/asm/unistd.h
+++ b/arch/riscv/include/uapi/asm/unistd.h
@@ -14,40 +14,10 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
+#include <asm/bitsperlong.h>
 
-#if defined(__LP64__) && !defined(__SYSCALL_COMPAT)
-#define __ARCH_WANT_NEW_STAT
-#define __ARCH_WANT_SET_GET_RLIMIT
-#endif /* __LP64__ */
-
-#define __ARCH_WANT_MEMFD_SECRET
-
-#include <asm-generic/unistd.h>
-
-/*
- * Allows the instruction cache to be flushed from userspace.  Despite RISC-V
- * having a direct 'fence.i' instruction available to userspace (which we
- * can't trap!), that's not actually viable when running on Linux because the
- * kernel might schedule a process on another hart.  There is no way for
- * userspace to handle this without invoking the kernel (as it doesn't know the
- * thread->hart mappings), so we've defined a RISC-V specific system call to
- * flush the instruction cache.
- *
- * __NR_riscv_flush_icache is defined to flush the instruction cache over an
- * address range, with the flush applying to either all threads or just the
- * caller.  We don't currently do anything with the address range, that's just
- * in there for forwards compatibility.
- */
-#ifndef __NR_riscv_flush_icache
-#define __NR_riscv_flush_icache (__NR_arch_specific_syscall + 15)
-#endif
-__SYSCALL(__NR_riscv_flush_icache, sys_riscv_flush_icache)
-
-/*
- * Allows userspace to query the kernel for CPU architecture and
- * microarchitecture details across a given set of CPUs.
- */
-#ifndef __NR_riscv_hwprobe
-#define __NR_riscv_hwprobe (__NR_arch_specific_syscall + 14)
+#if __BITS_PER_LONG == 64
+#include <asm/unistd_64.h>
+#else
+#include <asm/unistd_32.h>
 #endif
-__SYSCALL(__NR_riscv_hwprobe, sys_riscv_hwprobe)
diff --git a/arch/riscv/kernel/Makefile.syscalls b/arch/riscv/kernel/Makefile.syscalls
new file mode 100644
index 000000000000..52087a023b3d
--- /dev/null
+++ b/arch/riscv/kernel/Makefile.syscalls
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
+
+syscall_abis_32 += riscv memfd_secret
+syscall_abis_64 += riscv newstat rlimit memfd_secret
diff --git a/arch/riscv/kernel/compat_syscall_table.c b/arch/riscv/kernel/compat_syscall_table.c
index ad7f2d712f5f..e884c069e88f 100644
--- a/arch/riscv/kernel/compat_syscall_table.c
+++ b/arch/riscv/kernel/compat_syscall_table.c
@@ -8,9 +8,11 @@
 #include <asm-generic/syscalls.h>
 #include <asm/syscall.h>
 
+#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, compat)
+
 #undef __SYSCALL
 #define __SYSCALL(nr, call)	asmlinkage long __riscv_##call(const struct pt_regs *);
-#include <asm/unistd.h>
+#include <asm/syscall_table_32.h>
 
 #undef __SYSCALL
 #define __SYSCALL(nr, call)      [nr] = __riscv_##call,
@@ -19,5 +21,5 @@ asmlinkage long compat_sys_rt_sigreturn(void);
 
 void * const compat_sys_call_table[__NR_syscalls] = {
 	[0 ... __NR_syscalls - 1] = __riscv_sys_ni_syscall,
-#include <asm/unistd.h>
+#include <asm/syscall_table_32.h>
 };
diff --git a/arch/riscv/kernel/syscall_table.c b/arch/riscv/kernel/syscall_table.c
index dda913764903..6f1a36cb0f3f 100644
--- a/arch/riscv/kernel/syscall_table.c
+++ b/arch/riscv/kernel/syscall_table.c
@@ -9,14 +9,16 @@
 #include <asm-generic/syscalls.h>
 #include <asm/syscall.h>
 
+#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native)
+
 #undef __SYSCALL
 #define __SYSCALL(nr, call)	asmlinkage long __riscv_##call(const struct pt_regs *);
-#include <asm/unistd.h>
+#include <asm/syscall_table.h>
 
 #undef __SYSCALL
 #define __SYSCALL(nr, call)	[nr] = __riscv_##call,
 
 void * const sys_call_table[__NR_syscalls] = {
 	[0 ... __NR_syscalls - 1] = __riscv_sys_ni_syscall,
-#include <asm/unistd.h>
+#include <asm/syscall_table.h>
 };
diff --git a/scripts/syscall.tbl b/scripts/syscall.tbl
index 28329c00bf68..797e20ea99a2 100644
--- a/scripts/syscall.tbl
+++ b/scripts/syscall.tbl
@@ -301,6 +301,9 @@
 
 244	or1k	or1k_atomic			sys_or1k_atomic
 
+258	riscv	riscv_hwprobe			sys_riscv_hwprobe
+259	riscv	riscv_flush_icache		sys_riscv_flush_icache
+
 260	time32	wait4				sys_wait4			compat_sys_wait4
 260	64	wait4				sys_wait4
 261	common	prlimit64			sys_prlimit64
