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| author | John Hubbard <jhubbard@nvidia.com> | 2024-07-04 10:24:28 +0300 |
|---|---|---|
| committer | Shuah Khan <skhan@linuxfoundation.org> | 2024-07-11 20:23:55 +0300 |
| commit | 2ab9c93d6104e36110754d0778103f7f8719d969 (patch) | |
| tree | 702ddcb94810725fcf3e2ae48391b037995b2f3e /tools/testing/selftests/x86/sysret_rip.c | |
| parent | 1158655317b6b6e71980533939dce9ab91d9716b (diff) | |
| download | linux-2ab9c93d6104e36110754d0778103f7f8719d969.tar.xz | |
selftests/x86: build sysret_rip.c with clang
When building with clang, via:
make LLVM=1 -C tools/testing/selftests
...the build fails because clang's inline asm doesn't support all of the
features that are used in the asm() snippet in sysret_rip.c.
Fix this by moving the asm code into the clang_helpers_64.S file, where
it can be built with the assembler's full set of features.
Acked-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools/testing/selftests/x86/sysret_rip.c')
| -rw-r--r-- | tools/testing/selftests/x86/sysret_rip.c | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/tools/testing/selftests/x86/sysret_rip.c b/tools/testing/selftests/x86/sysret_rip.c index 84d74be1d902..b30de9aaa6d4 100644 --- a/tools/testing/selftests/x86/sysret_rip.c +++ b/tools/testing/selftests/x86/sysret_rip.c @@ -22,21 +22,13 @@ #include <sys/mman.h> #include <assert.h> - -asm ( - ".pushsection \".text\", \"ax\"\n\t" - ".balign 4096\n\t" - "test_page: .globl test_page\n\t" - ".fill 4094,1,0xcc\n\t" - "test_syscall_insn:\n\t" - "syscall\n\t" - ".ifne . - test_page - 4096\n\t" - ".error \"test page is not one page long\"\n\t" - ".endif\n\t" - ".popsection" - ); - +/* + * These items are in clang_helpers_64.S, in order to avoid clang inline asm + * limitations: + */ +void test_syscall_ins(void); extern const char test_page[]; + static void const *current_test_page_addr = test_page; static void sethandler(int sig, void (*handler)(int, siginfo_t *, void *), |