arm64: Introduce ID_ISAR6 CPU register

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This adds basic building blocks required for ID_ISAR6 CPU register which
identifies support for various instruction implementation on AArch32 state.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-kernel@vger.kernel.org
Cc: kvmarm@lists.cs.columbia.edu
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
[will: Ensure SPECRES is treated the same as on A64]
Signed-off-by: Will Deacon <will@kernel.org>

...

This commit is contained in:

Anshuman Khandual 2019-12-17 20:17:32 +05:30 • committed by Will Deacon

parent d4209d8b71

commit 8e3747beff

5 changed files with 28 additions and 1 deletions

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1

arch/arm64/include/asm/cpu.h

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9

arch/arm64/include/asm/sysreg.h

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16

arch/arm64/kernel/cpufeature.c

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arch/arm64/kernel/cpuinfo.c

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arch/arm64/kvm/sys_regs.c

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