[PATCH v4 RESEND 7/7] selftests/livepatch: Add RISC-V syscall wrapper prefix

[Wang Han]

The syscall livepatch selftest resolves and patches a syscall wrapper
symbol. To use that test for RISC-V livepatch validation, add the
RISC-V FN_PREFIX definition for ARCH_HAS_SYSCALL_WRAPPER.

Without this macro, the syscall livepatch selftest cannot resolve the
RISC-V target symbol, and the syscall-related livepatch test fails on
RISC-V.

Reviewed-by: Marcos Paulo de Souza <mpdesouza@xxxxxxxx>
Reviewed-by: Shuai Xue <xueshuai@xxxxxxxxxxxxxxxxx>
Signed-off-by: Wang Han <wanghan@xxxxxxxxxxxxxxxxx>
---
 .../testing/selftests/livepatch/test_modules/test_klp_syscall.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/livepatch/test_modules/test_klp_syscall.c b/tools/testing/selftests/livepatch/test_modules/test_klp_syscall.c
index 08aacc0e14de..9baa2a5f84c9 100644
--- a/tools/testing/selftests/livepatch/test_modules/test_klp_syscall.c
+++ b/tools/testing/selftests/livepatch/test_modules/test_klp_syscall.c
@@ -24,6 +24,8 @@
     #define FN_PREFIX __s390x_
   #elif defined(__aarch64__)
     #define FN_PREFIX __arm64_
+  #elif defined(__riscv)
+    #define FN_PREFIX __riscv_
   #elif defined(__powerpc__)
     #define FN_PREFIX
   #else
-- 
2.43.0