help wantedtriaged: bug
Metriche repository
- Star
- (30.157 stelle)
- Metriche merge PR
- (Nessuna PR mergiata in 30 g)
Descrizione
I noticed that on my OrangePi RV2, openssl speed -evp chacha20 is notably faster on glibc than on musl. I have determined that this is because the runtime check RISCV_HAS_ZBB() is erroneously returning false when compiled against musl. If I introduce an error in the riscv asm code, the test still passes. If I comment out the ZBB check on this line the test fails as expected.
I don't understand enough of what include/crypto/riscv_arch.h is doing to debug this further.
Also a related FR: can RISCV_HAS_* first do a compile time check for presence of the extension?