Revert "riscv: Use latest system call ABI"

euleros inclusion
category: feature
feature: initial KVM RISC-V support
bugzilla: 46845
CVE: NA

This reverts commit d4c08b97.

The latest RISC-V 32bit glibc submission doesn't work with this patch,
so let's revert it. This revert can be reverted when the glibc
submission is updated to work on the 5.1 kernel.

Reference: https://gitee.com/openeuler/kernel/issues/I26X9VSigned-off-by: NAlistair Francis <alistair.francis@wdc.com>
Upstream-Status: Inappropriate [enable feature]
Reviewed-by: NYifei Jiang <jiangyifei@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>

arch/riscv/Kconfig

@@ -12,6 +12,7 @@ config 32BIT
 
 config RISCV
 	def_bool y
+	select ARCH_32BIT_OFF_T if !64BIT
 	select ARCH_CLOCKSOURCE_INIT
 	select ARCH_SUPPORTS_ATOMIC_RMW
 	select ARCH_HAS_BINFMT_FLAT

arch/riscv/include/uapi/asm/unistd.h

@@ -17,9 +17,12 @@
 
 #ifdef __LP64__
 #define __ARCH_WANT_NEW_STAT
-#define __ARCH_WANT_SET_GET_RLIMIT
 #define __ARCH_WANT_SYS_CLONE3
 #endif /* __LP64__ */
+#define __ARCH_WANT_SET_GET_RLIMIT
+#ifndef __LP64__
+#define __ARCH_WANT_TIME32_SYSCALLS
+#endif
 
 #include <asm-generic/unistd.h>