Commit 6f2224ef authored by Oliver Upton's avatar Oliver Upton Committed by Marc Zyngier
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KVM: arm64: nv: Advertise FEAT_TIDCP1 to NV-enabled VMs 



While KVM does not expose IMPDEF features to VMs, FEAT_TIDCP1 is an
architecturally-defined EL1 trap of a particular sysreg encoding range.
Furthermore, KVM already advertises this feature to non-NV VMs.

As there is no interaction with EL2 traps, expose the feature.

Signed-off-by: default avatarOliver Upton <oliver.upton@linux.dev>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
parent fe2c9cd4

arch/arm64/kvm/nested.c

+0 −1
Original line number Diff line number Diff line
@@ -1525,7 +1525,6 @@ u64 limit_nv_id_reg(struct kvm *kvm, u32 reg, u64 val) 


	case SYS_ID_AA64MMFR1_EL1:

		val &= ~(ID_AA64MMFR1_EL1_CMOW		|

			 ID_AA64MMFR1_EL1_TIDCP1	|

			 ID_AA64MMFR1_EL1_nTLBPA	|

			 ID_AA64MMFR1_EL1_ETS		|

			 ID_AA64MMFR1_EL1_XNX		|