From: ard.biesheuvel@linaro.org (Ard Biesheuvel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/5] crypto: arm/crc32 - enable module autoloading based on CPU feature bits
Date: Sun, 21 May 2017 10:23:40 +0000 [thread overview]
Message-ID: <1495362220-30044-6-git-send-email-ard.biesheuvel@linaro.org> (raw)
In-Reply-To: <1495362220-30044-1-git-send-email-ard.biesheuvel@linaro.org>
Make the module autoloadable by tying it to the CPU feature bits that
describe whether the optional instructions it relies on are implemented
by the current CPU.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
arch/arm/crypto/crc32-ce-glue.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/crypto/crc32-ce-glue.c b/arch/arm/crypto/crc32-ce-glue.c
index e1566bec1016..1b0e0e86ee9c 100644
--- a/arch/arm/crypto/crc32-ce-glue.c
+++ b/arch/arm/crypto/crc32-ce-glue.c
@@ -8,6 +8,7 @@
* published by the Free Software Foundation.
*/
+#include <linux/cpufeature.h>
#include <linux/crc32.h>
#include <linux/init.h>
#include <linux/kernel.h>
@@ -233,6 +234,11 @@ static void __exit crc32_pmull_mod_exit(void)
ARRAY_SIZE(crc32_pmull_algs));
}
+static const struct cpu_feature crc32_cpu_feature[] = {
+ { cpu_feature(CRC32) }, { cpu_feature(PMULL) }, { }
+};
+MODULE_DEVICE_TABLE(cpu, crc32_cpu_feature);
+
module_init(crc32_pmull_mod_init);
module_exit(crc32_pmull_mod_exit);
--
2.7.4
next prev parent reply other threads:[~2017-05-21 10:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-21 10:23 [PATCH 0/5] crypto: arm - enable module autoloading Ard Biesheuvel
2017-05-21 10:23 ` [PATCH 1/5] crypto: arm/aes-ce - enable module autoloading based on CPU feature bits Ard Biesheuvel
2018-09-10 6:21 ` Stefan Agner
2018-09-10 7:01 ` Ard Biesheuvel
2018-09-13 6:24 ` Stefan Agner
2018-09-13 7:52 ` Ard Biesheuvel
2017-05-21 10:23 ` [PATCH 2/5] crypto: arm/ghash-ce " Ard Biesheuvel
2017-05-21 10:23 ` [PATCH 3/5] crypto: arm/sha1-ce " Ard Biesheuvel
2017-05-21 10:23 ` [PATCH 4/5] crypto: arm/sha2-ce " Ard Biesheuvel
2017-05-21 10:23 ` Ard Biesheuvel [this message]
2017-06-01 5:06 ` [PATCH 0/5] crypto: arm - enable module autoloading Herbert Xu
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