linux/arch/arm64
Suzuki K Poulose 77c97b4ee2 arm64: cpufeature: Expose CPUID registers by emulation
This patch adds the hook for emulating MRS instruction to
export the 'user visible' value of supported system registers.
We emulate only the following id space for system registers:

 Op0=3, Op1=0, CRn=0, CRm=[0, 4-7]

The rest will fall back to SIGILL. This capability is also
advertised via a new HWCAP_CPUID.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
[will: add missing static keyword to enable_mrs_emulation]
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-01-12 12:31:09 +00:00
..
boot Amlogic fixes for v4.10 2017-01-04 16:42:00 +01:00
configs ARM64: defconfig: enable DRM_MESON as module 2017-01-03 09:31:13 -08:00
crypto crypto: arm64/crc32 - accelerated support based on x86 SSE implementation 2016-12-07 20:01:22 +08:00
include arm64: cpufeature: Expose CPUID registers by emulation 2017-01-12 12:31:09 +00:00
kernel arm64: cpufeature: Expose CPUID registers by emulation 2017-01-12 12:31:09 +00:00
kvm Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
lib arm64: don't pull uaccess.h into *.S 2016-12-26 13:05:17 -05:00
mm arm64: Remove useless UAO IPI and describe how this gets enabled 2017-01-10 12:38:06 +00:00
net arm64: bpf: optimize LD_ABS, LD_IND 2016-06-10 23:11:50 -07:00
xen arm64: don't pull uaccess.h into *.S 2016-12-26 13:05:17 -05:00
Kconfig arm64 updates for 4.10: 2016-12-13 16:39:21 -08:00
Kconfig.debug arm64: dump: Add checking for writable and exectuable pages 2016-11-07 18:15:04 +00:00
Kconfig.platforms ARM: SoC driver updates for v4.10 2016-12-15 16:03:25 -08:00
Makefile arm64: Add detection code for broken .inst support in binutils 2016-12-06 15:54:21 +00:00