Re: [PATCH v2 8/8] selftests/livepatch: Add RISC-V syscall wrapper prefix

Shuai Xue <[email protected]> Wed, 3 Jun 2026 09:54:25 +0800

Newsgroups	org.kernel.vger.live-patching,org.infradead.lists.linux-riscv,org.kernel.vger.linux-kernel,org.kernel.vger.linux-kselftest,org.kernel.vger.linux-perf-users,org.kernel.vger.linux-trace-kernel
Message-ID	<[email protected]>


On 5/28/26 4:23 PM, Wang Han wrote:
> 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.
> 
> Signed-off-by: Wang Han <[email protected]>
> ---
>   .../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 dd802783ea84..275e4b10cf59 100644
> --- a/tools/testing/selftests/livepatch/test_modules/test_klp_syscall.c
> +++ b/tools/testing/selftests/livepatch/test_modules/test_klp_syscall.c
> @@ -18,6 +18,8 @@
>   #define FN_PREFIX __s390x_
>   #elif defined(__aarch64__)
>   #define FN_PREFIX __arm64_
> +#elif defined(__riscv)
> +#define FN_PREFIX __riscv_
>   #else
>   /* powerpc does not select ARCH_HAS_SYSCALL_WRAPPER */
>   #define FN_PREFIX

Reviewed-by: Shuai Xue <[email protected]>

Thanks.
Shuai