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authorEric Biggers <ebiggers@google.com>2022-11-18 11:44:18 -0800
committerHerbert Xu <herbert@gondor.apana.org.au>2022-11-25 17:39:19 +0800
commite5e1c67e2f01d924e9583b67a907934948d852aa (patch)
treea4169f606c346c200dc9869b8c686b5f001a4c47 /arch/arm64/crypto
parent2d203c46a0fa5df0785383b13b722483e1fd27a8 (diff)
crypto: arm64/nhpoly1305 - eliminate unnecessary CFI wrapper
Since the CFI implementation now supports indirect calls to assembly functions, take advantage of that rather than use a wrapper function. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm64/crypto')
-rw-r--r--arch/arm64/crypto/nh-neon-core.S5
-rw-r--r--arch/arm64/crypto/nhpoly1305-neon-glue.c11
2 files changed, 5 insertions, 11 deletions
diff --git a/arch/arm64/crypto/nh-neon-core.S b/arch/arm64/crypto/nh-neon-core.S
index 51c0a534ef87..13eda08fda1e 100644
--- a/arch/arm64/crypto/nh-neon-core.S
+++ b/arch/arm64/crypto/nh-neon-core.S
@@ -8,6 +8,7 @@
*/
#include <linux/linkage.h>
+#include <linux/cfi_types.h>
KEY .req x0
MESSAGE .req x1
@@ -58,11 +59,11 @@
/*
* void nh_neon(const u32 *key, const u8 *message, size_t message_len,
- * u8 hash[NH_HASH_BYTES])
+ * __le64 hash[NH_NUM_PASSES])
*
* It's guaranteed that message_len % 16 == 0.
*/
-SYM_FUNC_START(nh_neon)
+SYM_TYPED_FUNC_START(nh_neon)
ld1 {K0.4s,K1.4s}, [KEY], #32
movi PASS0_SUMS.2d, #0
diff --git a/arch/arm64/crypto/nhpoly1305-neon-glue.c b/arch/arm64/crypto/nhpoly1305-neon-glue.c
index c5405e6a6db7..cd882c35d925 100644
--- a/arch/arm64/crypto/nhpoly1305-neon-glue.c
+++ b/arch/arm64/crypto/nhpoly1305-neon-glue.c
@@ -14,14 +14,7 @@
#include <linux/module.h>
asmlinkage void nh_neon(const u32 *key, const u8 *message, size_t message_len,
- u8 hash[NH_HASH_BYTES]);
-
-/* wrapper to avoid indirect call to assembly, which doesn't work with CFI */
-static void _nh_neon(const u32 *key, const u8 *message, size_t message_len,
- __le64 hash[NH_NUM_PASSES])
-{
- nh_neon(key, message, message_len, (u8 *)hash);
-}
+ __le64 hash[NH_NUM_PASSES]);
static int nhpoly1305_neon_update(struct shash_desc *desc,
const u8 *src, unsigned int srclen)
@@ -33,7 +26,7 @@ static int nhpoly1305_neon_update(struct shash_desc *desc,
unsigned int n = min_t(unsigned int, srclen, SZ_4K);
kernel_neon_begin();
- crypto_nhpoly1305_update_helper(desc, src, n, _nh_neon);
+ crypto_nhpoly1305_update_helper(desc, src, n, nh_neon);
kernel_neon_end();
src += n;
srclen -= n;