Hi Jason,
Le 01/09/2024 à 15:22, Jason A. Donenfeld a écrit :
Hi Christophe,
Hmm, I'm not so sure I like this very much. I think it's important for
these tests to fail when an arch tries to hook up the function to the
vDSO, but it's still not exported for some reason. This also regresses
the ARCH=x86_64 vs ARCH=x86 thing, which SRCARCH fixes.
If we take the exemple of getcpu:
Only powerpc and s390 implement __kernel_getcpu.
Until recently, it was implemented on ppc64 but not on ppc32
Only loongarch, riscv and x86 implement __vdso_getcpu.
Nevertheless, vdso_test_getcpu is always builts, regardless of the
architecture.
When vdso_test_getcpu doesn't find the vDSO entry point, it prints an
error text and returns KSFT_SKIP
I thought it would be more correct to have the same behaviour on
vdso_test_getrandom instead of trying to build it only when the
underlying kernel supports it.
Christophe
