After some recent changes to the RISC-V crypto code that turned some
indirect function calls into direct ones, builds with CONFIG_CFI_CLANG
fail with:
ld.lld: error: undefined symbol: __kcfi_typeid_sm3_transform_zvksh_zvkb
>>> referenced by arch/riscv/crypto/sm3-riscv64-zvksh-zvkb.o:(.text+0x2) in archive vmlinux.a
ld.lld: error: undefined symbol: __kcfi_typeid_sha512_transform_zvknhb_zvkb
>>> referenced by arch/riscv/crypto/sha512-riscv64-zvknhb-zvkb.o:(.text+0x2) in archive vmlinux.a
ld.lld: error: undefined symbol: __kcfi_typeid_sha256_transform_zvknha_or_zvknhb_zvkb
>>> referenced by arch/riscv/crypto/sha256-riscv64-zvknha_or_zvknhb-zvkb.o:(.text+0x2) in archive vmlinux.a
As these functions are no longer indirectly called (i.e., have their
address taken), the compiler will not emit __kcfi_typeid symbols for
them but SYM_TYPED_FUNC_START expects these to exist at link time.
Switch the definitions of these functions to use SYM_FUNC_START, as they
no longer need kCFI type information since they are only called
directly.
Fixes: 1523eaed0a ("crypto: riscv/sm3 - Use API partial block handling")
Fixes: 561aab1104 ("crypto: riscv/sha512 - Use API partial block handling")
Fixes: e6c5597bad ("crypto: riscv/sha256 - Use API partial block handling")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add an implementation of SM3 using the Zvksh extension. The assembly
code is derived from OpenSSL code (openssl/openssl#21923) that was
dual-licensed so that it could be reused in the kernel. Nevertheless,
the assembly has been significantly reworked for integration with the
kernel, for example by using a regular .S file instead of the so-called
perlasm, using the assembler instead of bare '.inst', and greatly
reducing code duplication.
Co-developed-by: Christoph Müllner <christoph.muellner@vrull.eu>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Co-developed-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Signed-off-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Signed-off-by: Jerry Shih <jerry.shih@sifive.com>
Co-developed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20240122002024.27477-10-ebiggers@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
