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From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev
Cc: Marc Zyngier <maz@kernel.org>, James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Zenghui Yu <yuzenghui@huawei.com>,
	Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>,
	Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH v2 06/12] KVM: arm64: nv: Honor MDCR_EL2.{TPM, TPMCR} in Host EL0
Date: Tue, 27 Aug 2024 00:22:29 +0000	[thread overview]
Message-ID: <20240827002235.1753237-7-oliver.upton@linux.dev> (raw)
In-Reply-To: <20240827002235.1753237-1-oliver.upton@linux.dev>

TPM and TPMCR trap bits also affect Host EL0. How fun.

Mark these two trap bits as such and take advantage of the new
infrastructure for dealing w/ EL0 traps.

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
 arch/arm64/kvm/emulate-nested.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/emulate-nested.c b/arch/arm64/kvm/emulate-nested.c
index 4548725a0899..41839ad85bcf 100644
--- a/arch/arm64/kvm/emulate-nested.c
+++ b/arch/arm64/kvm/emulate-nested.c
@@ -296,13 +296,15 @@ static const struct trap_bits coarse_trap_bits[] = {
 		.index		= MDCR_EL2,
 		.value		= MDCR_EL2_TPMCR,
 		.mask		= MDCR_EL2_TPMCR,
-		.behaviour	= BEHAVE_FORWARD_RW,
+		.behaviour	= BEHAVE_FORWARD_RW |
+				  BEHAVE_IN_HOST_EL0,
 	},
 	[CGT_MDCR_TPM] = {
 		.index		= MDCR_EL2,
 		.value		= MDCR_EL2_TPM,
 		.mask		= MDCR_EL2_TPM,
-		.behaviour	= BEHAVE_FORWARD_RW,
+		.behaviour	= BEHAVE_FORWARD_RW |
+				  BEHAVE_IN_HOST_EL0,
 	},
 	[CGT_MDCR_TDE] = {
 		.index		= MDCR_EL2,
-- 
2.46.0.295.g3b9ea8a38a-goog


  parent reply	other threads:[~2024-08-27  0:22 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-27  0:22 [PATCH v2 00/12] KVM: arm64: nv: More complete support for FEAT_PMUv3 Oliver Upton
2024-08-27  0:22 ` [PATCH v2 01/12] KVM: arm64: Rename kvm_pmu_valid_counter_mask() Oliver Upton
2024-08-27  0:22 ` [PATCH v2 02/12] KVM: arm64: nv: Adjust range of accessible PMCs according to HPMN Oliver Upton
2024-08-27  0:22 ` [PATCH v2 03/12] KVM: arm64: nv: Rename BEHAVE_FORWARD_ANY Oliver Upton
2024-08-27  0:22 ` [PATCH v2 04/12] KVM: arm64: nv: Add support for describing traps that affect Host EL0 Oliver Upton
2024-08-27 16:24   ` Marc Zyngier
2024-08-27  0:22 ` [PATCH v2 05/12] KVM: arm64: nv: Reinject traps that take effect in " Oliver Upton
2024-08-27  0:22 ` Oliver Upton [this message]
2024-08-27  0:22 ` [PATCH v2 07/12] KVM: arm64: nv: Allow coarse-grained trap combos to use complex traps Oliver Upton
2024-08-27  0:22 ` [PATCH v2 08/12] KVM: arm64: nv: Describe trap behaviour of MDCR_EL2.HPMN Oliver Upton
2024-08-27  0:22 ` [PATCH v2 09/12] KVM: arm64: nv: Advertise support for FEAT_HPMN0 Oliver Upton
2024-08-27 16:40   ` Marc Zyngier
2024-08-27  0:22 ` [PATCH v2 10/12] KVM: arm64: Add helpers to determine if PMC counts at a given EL Oliver Upton
2024-08-27  0:22 ` [PATCH v2 11/12] KVM: arm64: nv: Honor NSH filter when in hyp context Oliver Upton
2024-08-27  0:22 ` [PATCH v2 12/12] KVM: arm64: nv: Reprogram PMU events affected by nested transition Oliver Upton

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