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Subject[patch 3/3] crypto: padlock-aes: enable on 64-bit kernels
From: Sebastian Andrzej Siewior <>
crypto: padlock-aes: enable on 64-bit kernels

The only required change now is using the right push/pop instruction
on x86-64. Taken from the original patch by Sebastian Andrzej Siewior.
(Added a dependency on X86.)

Signed-off-by: Sebastian Andrzej Siewior <>
Signed-off-by: Chuck Ebbert <>

diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -12,7 +12,7 @@ if CRYPTO_HW

tristate "Support for VIA PadLock ACE"
- depends on X86_32 && !UML
+ depends on X86 && !UML
Some VIA processors come with an integrated crypto engine
diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index 3f0fdd1..ddd27c7 100644
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -154,7 +154,11 @@ static inline void padlock_reset_key(struct cword *cword)
int cpu = raw_smp_processor_id();

if (cword != per_cpu(last_cword, cpu))
+#ifndef CONFIG_X86_64
asm volatile ("pushfl; popfl");
+ asm volatile ("pushfq; popfq");

static inline void padlock_store_cword(struct cword *cword)

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