From: Fuad Tabba <tabba@google.com>
To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org
Cc: maz@kernel.org, oliver.upton@linux.dev, james.clark@linaro.org,
will@kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com,
yuzenghui@huawei.com, catalin.marinas@arm.com,
broonie@kernel.org, qperret@google.com,
kristina.martsenko@arm.com, tabba@google.com
Subject: [PATCH v4 09/14] KVM: arm64: Remove redundant setting of HCR_EL2 trap bit
Date: Mon, 2 Dec 2024 15:47:36 +0000 [thread overview]
Message-ID: <20241202154742.3611749-10-tabba@google.com> (raw)
In-Reply-To: <20241202154742.3611749-1-tabba@google.com>
In hVHE mode, HCR_E2H should be set for both protected and
non-protected VMs. Since commit 23c9d58cb458 ("KVM: arm64: Fix
initializing traps in protected mode"), this has been fixed, and
the setting of the flag here is redundant.
Signed-off-by: Fuad Tabba <tabba@google.com>
---
arch/arm64/kvm/hyp/nvhe/pkvm.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/arm64/kvm/hyp/nvhe/pkvm.c b/arch/arm64/kvm/hyp/nvhe/pkvm.c
index ffa500b500f2..cede527a59d4 100644
--- a/arch/arm64/kvm/hyp/nvhe/pkvm.c
+++ b/arch/arm64/kvm/hyp/nvhe/pkvm.c
@@ -57,9 +57,6 @@ static void pvm_init_traps_hcr(struct kvm_vcpu *vcpu)
/* No support for AArch32. */
val |= HCR_RW;
- if (has_hvhe())
- val |= HCR_E2H;
-
/*
* Always trap:
* - Feature id registers: to control features exposed to guests
--
2.47.0.338.g60cca15819-goog
next prev parent reply other threads:[~2024-12-02 15:48 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-02 15:47 [PATCH v4 00/14] KVM: arm64: Rework guest VM fixed feature handling and trapping in pKVM Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 01/14] KVM: arm64: Consolidate allowed and restricted VM feature checks Fuad Tabba
2024-12-06 16:12 ` Quentin Perret
2024-12-09 8:03 ` Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 02/14] KVM: arm64: Group setting traps for protected VMs by control register Fuad Tabba
2024-12-06 16:44 ` Quentin Perret
2024-12-09 8:06 ` Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 03/14] KVM: arm64: Move checking protected vcpu features to a separate function Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 04/14] KVM: arm64: Use KVM extension checks for allowed protected VM capabilities Fuad Tabba
2024-12-06 17:10 ` Quentin Perret
2024-12-09 8:14 ` Fuad Tabba
2024-12-11 13:29 ` Quentin Perret
2024-12-11 13:30 ` Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 05/14] KVM: arm64: Initialize feature id registers for protected VMs Fuad Tabba
2024-12-06 1:02 ` Oliver Upton
2024-12-06 10:04 ` Fuad Tabba
2024-12-06 17:13 ` Quentin Perret
2024-12-09 8:09 ` Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 06/14] KVM: arm64: Set protected VM traps based on its view of feature registers Fuad Tabba
2024-12-06 17:31 ` Quentin Perret
2024-12-06 17:43 ` Mark Brown
2024-12-06 18:22 ` Marc Zyngier
2024-12-09 8:11 ` Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 07/14] KVM: arm64: Rework specifying restricted features for protected VMs Fuad Tabba
2024-12-11 12:34 ` Quentin Perret
2024-12-11 13:11 ` Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 08/14] KVM: arm64: Remove fixed_config.h header Fuad Tabba
2024-12-02 15:47 ` Fuad Tabba [this message]
2024-12-11 12:38 ` [PATCH v4 09/14] KVM: arm64: Remove redundant setting of HCR_EL2 trap bit Quentin Perret
2024-12-11 12:52 ` Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 10/14] KVM: arm64: Calculate cptr_el2 traps on activating traps Fuad Tabba
2024-12-11 12:46 ` Quentin Perret
2024-12-11 12:55 ` Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 11/14] KVM: arm64: Refactor kvm_reset_cptr_el2() Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 12/14] KVM: arm64: Fix the value of the CPTR_EL2 RES1 bitmask for nVHE Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 13/14] KVM: arm64: Remove PtrAuth guest vcpu flag Fuad Tabba
2024-12-02 15:47 ` [PATCH v4 14/14] KVM: arm64: Convert the SVE guest vcpu flag to a vm flag Fuad Tabba
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