From: Quentin Perret <qperret@google.com>
To: Fuad Tabba <tabba@google.com>
Cc: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
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
Subject: Re: [PATCH v1 10/12] KVM: arm64: Calculate cptr_el2 traps on activating traps
Date: Thu, 21 Nov 2024 08:32:05 +0000 [thread overview]
Message-ID: <Zz7wBU3BHW-XNnbr@google.com> (raw)
In-Reply-To: <20241120105254.2842020-11-tabba@google.com>
Hi Fuad,
On Wednesday 20 Nov 2024 at 10:52:52 (+0000), Fuad Tabba wrote:
> -static void pvm_init_traps_cptr(struct kvm_vcpu *vcpu)
> -{
> - struct kvm *kvm = vcpu->kvm;
> - u64 val = vcpu->arch.cptr_el2;
> -
> - if (!has_hvhe()) {
> - val |= CPTR_NVHE_EL2_RES1;
> - val &= ~(CPTR_NVHE_EL2_RES0);
> - }
To be on the safe side, should keep the RES1 stuff for nVHE?
Thanks,
Quentin
next prev parent reply other threads:[~2024-11-21 8:32 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-20 10:52 [PATCH v1 00/12] KVM: arm64: Rework guest VM fixed feature handling and trapping in pKVM Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 01/12] KVM: arm64: Consolidate allowed and restricted VM feature checks Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 02/12] KVM: arm64: Group setting traps for protected VMs by control register Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 03/12] KVM: arm64: Move checking protected vcpu features to a separate function Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 04/12] KVM: arm64: Use KVM extension checks for allowed protected VM capabilities Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 05/12] KVM: arm64: Initialize feature id registers for protected VMs Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 06/12] KVM: arm64: Set protected VM traps based on its view of feature registers Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 07/12] KVM: arm64: Rework specifying restricted features for protected VMs Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 08/12] KVM: arm64: Remove fixed_config.h header Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 09/12] KVM: arm64: Remove redundant setting of HCR_EL2 trap bit Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 10/12] KVM: arm64: Calculate cptr_el2 traps on activating traps Fuad Tabba
2024-11-21 8:32 ` Quentin Perret [this message]
2024-11-21 9:41 ` Fuad Tabba
2024-11-21 10:10 ` Quentin Perret
2024-11-21 13:30 ` Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 11/12] KVM: arm64: Update vcpu state with live value of VBAR_EL1 on injecting an exception Fuad Tabba
2024-11-20 10:52 ` [PATCH v1 12/12] fixup! KVM: arm64: Initialize feature id registers for protected VMs Fuad Tabba
2024-11-20 11:01 ` Fuad Tabba
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