On Sat, 19 Oct 2024 at 01:54, Eric Biggers <ebiggers@xxxxxxxxxx> wrote: > > From: Eric Biggers <ebiggers@xxxxxxxxxx> > > Move crypto_simd_disabled_for_test to lib/ so that crypto_simd_usable() > can be used by library code. > > This was discussed previously > (https://lore.kernel.org/linux-crypto/20220716062920.210381-4-ebiggers@xxxxxxxxxx/) > but was not done because there was no use case yet. However, this is > now needed for the arm64 CRC32 library code. > > Tested with: > export ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- > echo CONFIG_CRC32=y > .config > echo CONFIG_MODULES=y >> .config > echo CONFIG_CRYPTO=m >> .config > echo CONFIG_DEBUG_KERNEL=y >> .config > echo CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=n >> .config > echo CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y >> .config > make olddefconfig > make -j$(nproc) > > Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx> Acked-by: Ard Biesheuvel <ardb@xxxxxxxxxx> > --- > crypto/algapi.c | 6 ------ > lib/crypto/Makefile | 2 ++ > lib/crypto/simd.c | 11 +++++++++++ > 3 files changed, 13 insertions(+), 6 deletions(-) > create mode 100644 lib/crypto/simd.c > > diff --git a/crypto/algapi.c b/crypto/algapi.c > index 74e2261c184ca..429a832f90fe0 100644 > --- a/crypto/algapi.c > +++ b/crypto/algapi.c > @@ -4,11 +4,10 @@ > * > * Copyright (c) 2006 Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> > */ > > #include <crypto/algapi.h> > -#include <crypto/internal/simd.h> > #include <linux/err.h> > #include <linux/errno.h> > #include <linux/fips.h> > #include <linux/init.h> > #include <linux/kernel.h> > @@ -21,15 +20,10 @@ > > #include "internal.h" > > static LIST_HEAD(crypto_template_list); > > -#ifdef CONFIG_CRYPTO_MANAGER_EXTRA_TESTS > -DEFINE_PER_CPU(bool, crypto_simd_disabled_for_test); > -EXPORT_PER_CPU_SYMBOL_GPL(crypto_simd_disabled_for_test); > -#endif > - > static inline void crypto_check_module_sig(struct module *mod) > { > if (fips_enabled && mod && !module_sig_ok(mod)) > panic("Module %s signature verification failed in FIPS mode\n", > module_name(mod)); > diff --git a/lib/crypto/Makefile b/lib/crypto/Makefile > index 969baab8c805f..01fac1cd05a19 100644 > --- a/lib/crypto/Makefile > +++ b/lib/crypto/Makefile > @@ -56,5 +56,7 @@ libblake2s-y += blake2s-selftest.o > libchacha20poly1305-y += chacha20poly1305-selftest.o > libcurve25519-y += curve25519-selftest.o > endif > > obj-$(CONFIG_MPILIB) += mpi/ > + > +obj-$(CONFIG_CRYPTO_MANAGER_EXTRA_TESTS) += simd.o > diff --git a/lib/crypto/simd.c b/lib/crypto/simd.c > new file mode 100644 > index 0000000000000..9c36cb3bb49c4 > --- /dev/null > +++ b/lib/crypto/simd.c > @@ -0,0 +1,11 @@ > +// SPDX-License-Identifier: GPL-2.0-or-later > +/* > + * SIMD testing utility functions > + * > + * Copyright 2024 Google LLC > + */ > + > +#include <crypto/internal/simd.h> > + > +DEFINE_PER_CPU(bool, crypto_simd_disabled_for_test); > +EXPORT_PER_CPU_SYMBOL_GPL(crypto_simd_disabled_for_test); > > base-commit: 5c20772738e1d1d7bec41664eb9d61497e53c10e > -- > 2.47.0 >
