From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> NEON in kernel mode is used by the crypto algorithms and raid6 code. While the raid6 code looks okay, the crypto algorithms do not: NEON is enabled on first invocation and may allocate/free/map memory before the NEON mode is disabled again. This needs to be changed until it can be enabled. On ARM NEON in kernel mode can be simply disabled. on ARM64 it needs to stay on due to possible EFI callbacks so here I disable each algorithm. Cc: stable-rt@xxxxxxxxxxxxxxx Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> Signed-off-by: Daniel Wagner <wagi@xxxxxxxxx> (cherry picked from commit 728b41d8e7b5307b52bdbffcb492bc8345a4e38a) Signed-off-by: Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx> --- arch/arm/Kconfig | 2 +- arch/arm64/crypto/Kconfig | 14 +++++++------- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index d635abf51063..12b1e7a5f103 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -2122,7 +2122,7 @@ config NEON config KERNEL_MODE_NEON bool "Support for NEON in kernel mode" - depends on NEON && AEABI + depends on NEON && AEABI && !PREEMPT_RT_BASE help Say Y to include support for NEON in kernel mode. diff --git a/arch/arm64/crypto/Kconfig b/arch/arm64/crypto/Kconfig index 5562652c5316..003fe0718117 100644 --- a/arch/arm64/crypto/Kconfig +++ b/arch/arm64/crypto/Kconfig @@ -10,42 +10,42 @@ if ARM64_CRYPTO config CRYPTO_SHA1_ARM64_CE tristate "SHA-1 digest algorithm (ARMv8 Crypto Extensions)" - depends on ARM64 && KERNEL_MODE_NEON + depends on ARM64 && KERNEL_MODE_NEON && !PREEMPT_RT_BASE select CRYPTO_HASH config CRYPTO_SHA2_ARM64_CE tristate "SHA-224/SHA-256 digest algorithm (ARMv8 Crypto Extensions)" - depends on ARM64 && KERNEL_MODE_NEON + depends on ARM64 && KERNEL_MODE_NEON && !PREEMPT_RT_BASE select CRYPTO_HASH config CRYPTO_GHASH_ARM64_CE tristate "GHASH (for GCM chaining mode) using ARMv8 Crypto Extensions" - depends on ARM64 && KERNEL_MODE_NEON + depends on ARM64 && KERNEL_MODE_NEON && !PREEMPT_RT_BASE select CRYPTO_HASH config CRYPTO_AES_ARM64_CE tristate "AES core cipher using ARMv8 Crypto Extensions" - depends on ARM64 && KERNEL_MODE_NEON + depends on ARM64 && KERNEL_MODE_NEON && !PREEMPT_RT_BASE select CRYPTO_ALGAPI select CRYPTO_AES config CRYPTO_AES_ARM64_CE_CCM tristate "AES in CCM mode using ARMv8 Crypto Extensions" - depends on ARM64 && KERNEL_MODE_NEON + depends on ARM64 && KERNEL_MODE_NEON && !PREEMPT_RT_BASE select CRYPTO_ALGAPI select CRYPTO_AES select CRYPTO_AEAD config CRYPTO_AES_ARM64_CE_BLK tristate "AES in ECB/CBC/CTR/XTS modes using ARMv8 Crypto Extensions" - depends on ARM64 && KERNEL_MODE_NEON + depends on ARM64 && KERNEL_MODE_NEON && !PREEMPT_RT_BASE select CRYPTO_BLKCIPHER select CRYPTO_AES select CRYPTO_ABLK_HELPER config CRYPTO_AES_ARM64_NEON_BLK tristate "AES in ECB/CBC/CTR/XTS modes using NEON instructions" - depends on ARM64 && KERNEL_MODE_NEON + depends on ARM64 && KERNEL_MODE_NEON && !PREEMPT_RT_BASE select CRYPTO_BLKCIPHER select CRYPTO_AES select CRYPTO_ABLK_HELPER -- 2.14.1 -- To unsubscribe from this list: send the line "unsubscribe stable-rt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
