From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev
Cc: Marc Zyngier <maz@kernel.org>, Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Jinqian Yang <yangjinqian1@huawei.com>,
Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH 08/11] KVM: arm64: nv: Expose FEAT_TWED to NV-enabled VMs
Date: Fri, 12 Sep 2025 14:22:55 -0700 [thread overview]
Message-ID: <20250912212258.407350-9-oliver.upton@linux.dev> (raw)
In-Reply-To: <20250912212258.407350-1-oliver.upton@linux.dev>
KVM now handles HCR_EL2.{TWEDEn,TWEDEL} correctly when computing the
effective HCR for a nested context. Advertise the feature.
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
arch/arm64/kvm/nested.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c
index 4e70b4908c99..a5e1a3de2742 100644
--- a/arch/arm64/kvm/nested.c
+++ b/arch/arm64/kvm/nested.c
@@ -1528,7 +1528,6 @@ u64 limit_nv_id_reg(struct kvm *kvm, u32 reg, u64 val)
ID_AA64MMFR1_EL1_TIDCP1 |
ID_AA64MMFR1_EL1_nTLBPA |
ID_AA64MMFR1_EL1_ETS |
- ID_AA64MMFR1_EL1_TWED |
ID_AA64MMFR1_EL1_XNX |
ID_AA64MMFR1_EL1_SpecSEI |
ID_AA64MMFR1_EL1_HAFDBS);
--
2.39.5
next prev parent reply other threads:[~2025-09-12 21:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-12 21:22 [PATCH 00/11] KVM: arm64: nv: Align feature limitations with current state of support Oliver Upton
2025-09-12 21:22 ` [PATCH 01/11] KVM: arm64: nv: Convert masks to denylists in limit_nv_id_reg() Oliver Upton
2025-09-12 21:22 ` [PATCH 02/11] KVM: arm64: nv: Don't erroneously claim FEAT_DoubleLock for NV VMs Oliver Upton
2025-09-12 21:22 ` [PATCH 03/11] KVM: arm64: nv: Expose FEAT_DF2 to NV-enabled VMs Oliver Upton
2025-09-12 21:22 ` [PATCH 04/11] KVM: arm64: nv: Expose FEAT_RASv1p1 via RAS_frac Oliver Upton
2025-09-12 21:22 ` [PATCH 05/11] KVM: arm64: nv: Expose FEAT_ECBHB to NV-enabled VMs Oliver Upton
2025-09-12 21:22 ` [PATCH 06/11] KVM: arm64: nv: Expose FEAT_AFP " Oliver Upton
2025-09-12 21:22 ` [PATCH 07/11] KVM: arm64: nv: Exclude guest's TWED configuration when TWE isn't set Oliver Upton
2025-09-12 21:22 ` Oliver Upton [this message]
2025-09-12 21:22 ` [PATCH 09/11] KVM: arm64: nv: Advertise FEAT_SpecSEI to NV-enabled VMs Oliver Upton
2025-09-12 21:22 ` [PATCH 10/11] KVM: arm64: nv: Advertise FEAT_TIDCP1 " Oliver Upton
2025-09-12 21:22 ` [PATCH 11/11] KVM: arm64: nv: Expose up to FEAT_Debugv8p8 " Oliver Upton
2025-09-12 21:43 ` [PATCH 00/11] KVM: arm64: nv: Align feature limitations with current state of support Marc Zyngier
2025-09-12 21:48 ` Oliver Upton
2025-09-19 13:15 ` Marc Zyngier
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