kernel/arch/arm/include/asm/opcodes-sec.h, branch linux-4.15.y Hosts the 0x221E linux distro kernel. https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-4.15.y 2013-01-10T21:10:20Z ARM: opcodes: add opcodes definitions for ARM security extensions 2013-01-10T21:10:20Z Will Deacon will.deacon@arm.com 2012-12-12T19:16:59Z urn:sha1:af965acc81796c0006c0200129cd22a27c714e52 The ARM security extensions introduced the smc instruction, which is not supported by all versions of GAS. This patch introduces opcodes-sec.h, so that smc is made available in a similar manner to hvc. Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>