@@ -39,16 +39,6 @@ struct xsave_buffer {
};
};
-static inline uint64_t xgetbv(uint32_t index)
-{
- uint32_t eax, edx;
-
- asm volatile("xgetbv;"
- : "=a" (eax), "=d" (edx)
- : "c" (index));
- return eax + ((uint64_t)edx << 32);
-}
-
static inline void xsave(struct xsave_buffer *xbuf, uint64_t rfbm)
{
uint32_t rfbm_lo = rfbm;
@@ -164,12 +154,6 @@ static inline void clear_xstate_header(struct xsave_buffer *buffer)
memset(&buffer->header, 0, sizeof(buffer->header));
}
-static inline uint64_t get_xstatebv(struct xsave_buffer *buffer)
-{
- /* XSTATE_BV is at the beginning of the header: */
- return *(uint64_t *)&buffer->header;
-}
-
static inline void set_xstatebv(struct xsave_buffer *buffer, uint64_t bv)
{
/* XSTATE_BV is at the beginning of the header: */
@@ -109,11 +109,6 @@ static inline void wrgsbase(unsigned long gsbase)
asm volatile("wrgsbase %0" :: "r" (gsbase) : "memory");
}
-static inline void wrfsbase(unsigned long fsbase)
-{
- asm volatile("wrfsbase %0" :: "r" (fsbase) : "memory");
-}
-
enum which_base { FS, GS };
static unsigned long read_base(enum which_base which)
@@ -212,7 +207,6 @@ static void mov_0_gs(unsigned long initial_base, bool schedule)
}
static volatile unsigned long remote_base;
-static volatile bool remote_hard_zero;
static volatile unsigned int ftx;
/*
@@ -29,7 +29,6 @@ static void sethandler(int sig, void (*handler)(int, siginfo_t *, void *),
err(1, "sigaction");
}
-static volatile sig_atomic_t sig_traps;
static sigjmp_buf jmpbuf;
static volatile sig_atomic_t n_errs;
@@ -97,11 +97,6 @@ static inline long sys_gtod(struct timeval *tv, struct timezone *tz)
return syscall(SYS_gettimeofday, tv, tz);
}
-static inline int sys_clock_gettime(clockid_t id, struct timespec *ts)
-{
- return syscall(SYS_clock_gettime, id, ts);
-}
-
static inline long sys_time(time_t *t)
{
return syscall(SYS_time, t);
@@ -92,4 +92,6 @@ int main()
printf("[FAIL]\t!SA_SIGINFO handler was not called\n");
nerrs++;
}
+
+ return nerrs;
}
First of all, in order to build with clang at all, one must first apply Valentin Obst's build fix for LLVM [1]. Once that is done, then when building with clang, via: make LLVM=1 -C tools/testing/selftests ...quite a few functions are variables are generating "unused" warnings. Fix the warnings by deleting the unused items. One item, the "nerrs" variable in vsdo_restorer.c's main(), is unused but probably wants to be returned from main(), as a non-zero result. That result is also unused right now, so another option would be to delete it entirely, but this way, main() also gets fixed. It was missing a return value. [1] https://lore.kernel.org/all/20240329-selftests-libmk-llvm-rfc-v1-1-2f9ed7d1c49f@valentinobst.de/ Signed-off-by: John Hubbard <jhubbard@nvidia.com> --- tools/testing/selftests/x86/amx.c | 16 ---------------- tools/testing/selftests/x86/fsgsbase.c | 6 ------ tools/testing/selftests/x86/syscall_arg_fault.c | 1 - tools/testing/selftests/x86/test_vsyscall.c | 5 ----- tools/testing/selftests/x86/vdso_restorer.c | 2 ++ 5 files changed, 2 insertions(+), 28 deletions(-)