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crypto: x86 - convert to use crypto_simd_usable()

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Replace all calls to irq_fpu_usable() in the x86 crypto code with
crypto_simd_usable(), in order to allow testing the no-SIMD code paths.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers
2019-03-12 22:12:48 -07:00
committed by Herbert Xu
parent b55e1a3954
commit f2abe0d72b
12 changed files with 44 additions and 36 deletions
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7
arch/x86/crypto/crc32c-intel_glue.c
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@@ -29,10 +29,11 @@
#include <linux/string.h>
#include <linux/kernel.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <asm/cpufeatures.h>
#include <asm/cpu_device_id.h>
#include <asm/fpu/internal.h>
#include <asm/simd.h>
#define CHKSUM_BLOCK_SIZE 1
#define CHKSUM_DIGEST_SIZE 4
@@ -177,7 +178,7 @@ static int crc32c_pcl_intel_update(struct shash_desc *desc, const u8 *data,
* use faster PCL version if datasize is large enough to
* overcome kernel fpu state save/restore overhead
*/
if (len >= CRC32C_PCL_BREAKEVEN && irq_fpu_usable()) {
if (len >= CRC32C_PCL_BREAKEVEN && crypto_simd_usable()) {
kernel_fpu_begin();
*crcp = crc_pcl(data, len, *crcp);
kernel_fpu_end();
@@ -189,7 +190,7 @@ static int crc32c_pcl_intel_update(struct shash_desc *desc, const u8 *data,
static int __crc32c_pcl_intel_finup(u32 *crcp, const u8 *data, unsigned int len,
u8 *out)
{
if (len >= CRC32C_PCL_BREAKEVEN && irq_fpu_usable()) {
if (len >= CRC32C_PCL_BREAKEVEN && crypto_simd_usable()) {
kernel_fpu_begin();
*(__le32 *)out = ~cpu_to_le32(crc_pcl(data, len, *crcp));
kernel_fpu_end();