From: Quentin Perret <qperret@google.com>
To: Will Deacon <will@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/5] KVM: arm64: Reject stub hypercalls after pKVM has been initialised
Date: Wed, 29 Sep 2021 14:37:40 +0100 [thread overview]
Message-ID: <YVRsJNAwFytnmqTR@google.com> (raw)
In-Reply-To: <20210923112256.15767-3-will@kernel.org>
On Thursday 23 Sep 2021 at 12:22:53 (+0100), Will Deacon wrote:
> The stub hypercalls provide mechanisms to reset and replace the EL2 code,
> so uninstall them once pKVM has been initialised in order to ensure the
> integrity of the hypervisor code.
>
> To ensure pKVM initialisation remains functional, split cpu_hyp_reinit()
> into two helper functions to separate usage of the stub from usage of
> pkvm hypercalls either side of __pkvm_init on the boot CPU.
>
> Cc: Marc Zyngier <maz@kernel.org>
> Cc: Quentin Perret <qperret@google.com>
> Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Quentin Perret <qperret@google.com>
Thanks,
Quentin
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kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Quentin Perret <qperret@google.com>
To: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
Marc Zyngier <maz@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH 2/5] KVM: arm64: Reject stub hypercalls after pKVM has been initialised
Date: Wed, 29 Sep 2021 14:37:40 +0100 [thread overview]
Message-ID: <YVRsJNAwFytnmqTR@google.com> (raw)
In-Reply-To: <20210923112256.15767-3-will@kernel.org>
On Thursday 23 Sep 2021 at 12:22:53 (+0100), Will Deacon wrote:
> The stub hypercalls provide mechanisms to reset and replace the EL2 code,
> so uninstall them once pKVM has been initialised in order to ensure the
> integrity of the hypervisor code.
>
> To ensure pKVM initialisation remains functional, split cpu_hyp_reinit()
> into two helper functions to separate usage of the stub from usage of
> pkvm hypercalls either side of __pkvm_init on the boot CPU.
>
> Cc: Marc Zyngier <maz@kernel.org>
> Cc: Quentin Perret <qperret@google.com>
> Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Quentin Perret <qperret@google.com>
Thanks,
Quentin
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-09-29 13:37 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-23 11:22 [PATCH 0/5] KVM: arm64: Restrict host hypercalls when pKVM is enabled Will Deacon
2021-09-23 11:22 ` Will Deacon
2021-09-23 11:22 ` [PATCH 1/5] arm64: Prevent kexec and hibernation if is_protected_kvm_enabled() Will Deacon
2021-09-23 11:22 ` Will Deacon
2021-09-23 11:45 ` Mark Rutland
2021-09-23 11:45 ` Mark Rutland
2021-09-23 12:29 ` Will Deacon
2021-09-23 12:29 ` Will Deacon
2021-09-23 11:22 ` [PATCH 2/5] KVM: arm64: Reject stub hypercalls after pKVM has been initialised Will Deacon
2021-09-23 11:22 ` Will Deacon
2021-09-29 13:37 ` Quentin Perret [this message]
2021-09-29 13:37 ` Quentin Perret
2021-09-23 11:22 ` [PATCH 3/5] KVM: arm64: Propagate errors from __pkvm_prot_finalize hypercall Will Deacon
2021-09-23 11:22 ` Will Deacon
2021-09-29 13:36 ` Quentin Perret
2021-09-29 13:36 ` Quentin Perret
2021-10-05 11:30 ` Will Deacon
2021-10-05 11:30 ` Will Deacon
2021-09-23 11:22 ` [PATCH 4/5] KVM: arm64: Prevent re-finalisation of pKVM for a given CPU Will Deacon
2021-09-23 11:22 ` Will Deacon
2021-09-29 13:41 ` Quentin Perret
2021-09-29 13:41 ` Quentin Perret
2021-09-23 11:22 ` [PATCH 5/5] KVM: arm64: Disable privileged hypercalls after pKVM finalisation Will Deacon
2021-09-23 11:22 ` Will Deacon
2021-09-23 12:56 ` Marc Zyngier
2021-09-23 12:56 ` Marc Zyngier
2021-09-23 13:02 ` Will Deacon
2021-09-23 13:02 ` Will Deacon
2021-09-23 13:11 ` Marc Zyngier
2021-09-23 13:11 ` Marc Zyngier
2021-09-23 12:58 ` Will Deacon
2021-09-23 12:58 ` Will Deacon
2021-09-23 12:21 ` [PATCH 0/5] KVM: arm64: Restrict host hypercalls when pKVM is enabled Marc Zyngier
2021-09-23 12:21 ` Marc Zyngier
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