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authorIonela Voinescu <ionela.voinescu@arm.com>2020-03-05 10:06:21 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2020-03-06 17:02:49 +0100
commit2c9d45b43c39e26fd2a73f2203321cdaee98b58b (patch)
tree296a8b9aea33f75c713c408765ffe935bad920bd /arch/arm64/include/asm/cpucaps.h
parentLinux 5.6-rc3 (diff)
downloadlinux-2c9d45b43c39e26fd2a73f2203321cdaee98b58b.tar.xz
linux-2c9d45b43c39e26fd2a73f2203321cdaee98b58b.zip
arm64: add support for the AMU extension v1
The activity monitors extension is an optional extension introduced by the ARMv8.4 CPU architecture. This implements basic support for version 1 of the activity monitors architecture, AMUv1. This support includes: - Extension detection on each CPU (boot, secondary, hotplugged) - Register interface for AMU aarch64 registers Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com> Reviewed-by: Valentin Schneider <valentin.schneider@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/cpucaps.h')
-rw-r--r--arch/arm64/include/asm/cpucaps.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h
index 865e0253fc1e..185e44aa2713 100644
--- a/arch/arm64/include/asm/cpucaps.h
+++ b/arch/arm64/include/asm/cpucaps.h
@@ -58,7 +58,8 @@
#define ARM64_WORKAROUND_SPECULATIVE_AT_NVHE 48
#define ARM64_HAS_E0PD 49
#define ARM64_HAS_RNG 50
+#define ARM64_HAS_AMU_EXTN 51
-#define ARM64_NCAPS 51
+#define ARM64_NCAPS 52
#endif /* __ASM_CPUCAPS_H */