diff options
| author |   Will Deacon <will.deacon@arm.com> | 2016-09-06 14:04:45 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-09-09 18:12:08 +0100 |
| commit | 8a71f0c656e0521867931eecff54eb3a35ca65a7 (patch) | |
| tree | 4c460a0145d2a9a1c2a70b93ceb294a2c7280ac7 /arch/arm64/include/asm/cputype.h | |
| parent | arm64: Remove shadowed asm-generic headers (diff) | |
| download | linux-dev-8a71f0c656e0521867931eecff54eb3a35ca65a7.tar.xz linux-dev-8a71f0c656e0521867931eecff54eb3a35ca65a7.zip | |
arm64: sysreg: replace open-coded mrs_s/msr_s with {read,write}_sysreg_s
Similar to our {read,write}_sysreg accessors for architected, named
system registers, this patch introduces {read,write}_sysreg_s variants
that can take arbitrary sys_reg output and therefore access IMPDEF
registers or registers that unsupported by binutils.
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/cputype.h')
| -rw-r--r-- | arch/arm64/include/asm/cputype.h | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h index 9d9fd4b9a72e..26a68ddb11c1 100644 --- a/arch/arm64/include/asm/cputype.h +++ b/arch/arm64/include/asm/cputype.h @@ -93,11 +93,7 @@ #include <asm/sysreg.h> -#define read_cpuid(reg) ({ \ - u64 __val; \ - asm("mrs_s %0, " __stringify(SYS_ ## reg) : "=r" (__val)); \ - __val; \ -}) +#define read_cpuid(reg) read_sysreg_s(SYS_ ## reg) /* * The CPU ID never changes at run time, so we might as well tell the |