arm64: cpufeature: Detect HCR_EL2.NV1 being RES0

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A variant of FEAT_E2H0 not being implemented exists in the form of
HCR_EL2.E2H being RES1 *and* HCR_EL2.NV1 being RES0 (indicating that
only VHE is supported on the host and nested guests).

Add the necessary infrastructure for this new CPU capability.

Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20240122181344.258974-7-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Marc Zyngier 2024-01-22 18:13:40 +00:00 • committed by Oliver Upton

parent 805bb61f82

commit da9af5071b

2 changed files with 13 additions and 0 deletions

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12

arch/arm64/kernel/cpufeature.c

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1

arch/arm64/tools/cpucaps

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