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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/powerpc/crypto/Kconfig
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
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diff --git a/arch/powerpc/crypto/Kconfig b/arch/powerpc/crypto/Kconfig
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+# SPDX-License-Identifier: GPL-2.0
+
+menu "Accelerated Cryptographic Algorithms for CPU (powerpc)"
+
+config CRYPTO_AES_PPC_SPE
+ tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (SPE)"
+ depends on SPE
+ select CRYPTO_LIB_AES
+ select CRYPTO_SKCIPHER
+ help
+ Length-preserving ciphers: AES with ECB, CBC, CTR, and XTS modes
+
+ Architecture: powerpc using:
+ - SPE (Signal Processing Engine) extensions
+
+ SPE is available for:
+ - Processor Type: Freescale 8500
+ - CPU selection: e500 (8540)
+
+ This module should only be used for low power (router) devices
+ without hardware AES acceleration (e.g. caam crypto). It reduces the
+ size of the AES tables from 16KB to 8KB + 256 bytes and mitigates
+ timining attacks. Nevertheless it might be not as secure as other
+ architecture specific assembler implementations that work on 1KB
+ tables or 256 bytes S-boxes.
+
+config CRYPTO_AES_GCM_P10
+ tristate "Stitched AES/GCM acceleration support on P10 or later CPU (PPC)"
+ depends on PPC64 && CPU_LITTLE_ENDIAN && VSX
+ select CRYPTO_LIB_AES
+ select CRYPTO_ALGAPI
+ select CRYPTO_AEAD
+ select CRYPTO_SKCIPHER
+ select CRYPTO_SIMD
+ help
+ AEAD cipher: AES cipher algorithms (FIPS-197)
+ GCM (Galois/Counter Mode) authenticated encryption mode (NIST SP800-38D)
+ Architecture: powerpc64 using:
+ - little-endian
+ - Power10 or later features
+
+ Support for cryptographic acceleration instructions on Power10 or
+ later CPU. This module supports stitched acceleration for AES/GCM.
+
+config CRYPTO_DEV_VMX
+ bool "Support for VMX cryptographic acceleration instructions"
+ depends on PPC64 && VSX
+ help
+ Support for VMX cryptographic acceleration instructions.
+
+config CRYPTO_DEV_VMX_ENCRYPT
+ tristate "Encryption acceleration support on P8 CPU"
+ depends on CRYPTO_DEV_VMX
+ select CRYPTO_AES
+ select CRYPTO_CBC
+ select CRYPTO_CTR
+ select CRYPTO_XTS
+ default m
+ help
+ Support for VMX cryptographic acceleration instructions on Power8 CPU.
+ This module supports acceleration for AES in hardware. If you choose
+ 'M' here, this module will be called vmx-crypto.
+
+endmenu