KVM: arm64: Allow ARM64_PTR_AUTH when ARM64_VHE=n
We currently prevent PtrAuth from even being built if KVM is selected, but VHE isn't. It is a bit of a pointless restriction, since we also check this at run time (rejecting the enabling of PtrAuth for the vcpu if we're not running with VHE). Just drop this apparently useless restriction. Acked-by: Andrew Scull <ascull@google.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org>
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@ -1516,7 +1516,6 @@ menu "ARMv8.3 architectural features"
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config ARM64_PTR_AUTH
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config ARM64_PTR_AUTH
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bool "Enable support for pointer authentication"
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bool "Enable support for pointer authentication"
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default y
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default y
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depends on !KVM || ARM64_VHE
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depends on (CC_HAS_SIGN_RETURN_ADDRESS || CC_HAS_BRANCH_PROT_PAC_RET) && AS_HAS_PAC
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depends on (CC_HAS_SIGN_RETURN_ADDRESS || CC_HAS_BRANCH_PROT_PAC_RET) && AS_HAS_PAC
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# GCC 9.1 and later inserts a .note.gnu.property section note for PAC
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# GCC 9.1 and later inserts a .note.gnu.property section note for PAC
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# which is only understood by binutils starting with version 2.33.1.
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# which is only understood by binutils starting with version 2.33.1.
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@ -1543,8 +1542,7 @@ config ARM64_PTR_AUTH
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The feature is detected at runtime. If the feature is not present in
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The feature is detected at runtime. If the feature is not present in
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hardware it will not be advertised to userspace/KVM guest nor will it
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hardware it will not be advertised to userspace/KVM guest nor will it
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be enabled. However, KVM guest also require VHE mode and hence
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be enabled.
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CONFIG_ARM64_VHE=y option to use this feature.
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If the feature is present on the boot CPU but not on a late CPU, then
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If the feature is present on the boot CPU but not on a late CPU, then
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the late CPU will be parked. Also, if the boot CPU does not have
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the late CPU will be parked. Also, if the boot CPU does not have
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