]> git.karo-electronics.de Git - karo-tx-linux.git/commit
arm64: cpufeature: Change read_cpuid() to use sysreg's mrs_s macro
authorJames Morse <james.morse@arm.com>
Fri, 5 Feb 2016 14:58:46 +0000 (14:58 +0000)
committerCatalin Marinas <catalin.marinas@arm.com>
Thu, 18 Feb 2016 11:59:54 +0000 (11:59 +0000)
commit0f54b14e76f5302afe164dc911b049b5df836ff5
treedbc5dd6384c2e40d6ce01426c67a0c31aec7e9d7
parent7abc7d833c9eb16efc8a59239d3771a6e30be367
arm64: cpufeature: Change read_cpuid() to use sysreg's mrs_s macro

Older assemblers may not have support for newer feature registers. To get
round this, sysreg.h provides a 'mrs_s' macro that takes a register
encoding and generates the raw instruction.

Change read_cpuid() to use mrs_s in all cases so that new registers
don't have to be a special case. Including sysreg.h means we need to move
the include and definition of read_cpuid() after the #ifndef __ASSEMBLY__
to avoid syntax errors in vmlinux.lds.

Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/include/asm/cpufeature.h
arch/arm64/include/asm/cputype.h
arch/arm64/kernel/cpufeature.c
arch/arm64/kernel/cpuinfo.c
arch/arm64/mm/context.c