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Date:   Wed, 29 Sep 2021 11:28:33 +0100
From:   Will Deacon <will@kernel.org>
To:     Marc Zyngier <maz@kernel.org>
Cc:     linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org,
        kvmarm@lists.cs.columbia.edu, ascull@google.com,
        dbrazdil@google.com, James Morse <james.morse@arm.com>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Alexandru Elisei <alexandru.elisei@arm.com>,
        kernel-team@android.com
Subject: Re: [PATCH] KVM: arm64: Allow KVM to be disabled from the command
 line
Message-ID: <20210929102832.GD21057@willie-the-truck>
References: <20210903091652.985836-1-maz@kernel.org>
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On Fri, Sep 03, 2021 at 10:16:52AM +0100, Marc Zyngier wrote:
> Although KVM can be compiled out of the kernel, it cannot be disabled
> at runtime. Allow this possibility by introducing a new mode that
> will prevent KVM from initialising.
> 
> This is useful in the (limited) circumstances where you don't want
> KVM to be available (what is wrong with you?), or when you want
> to install another hypervisor instead (good luck with that).
> 
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> ---
>  Documentation/admin-guide/kernel-parameters.txt |  3 +++
>  arch/arm64/include/asm/kvm_host.h               |  1 +
>  arch/arm64/kernel/idreg-override.c              |  1 +
>  arch/arm64/kvm/arm.c                            | 14 +++++++++++++-
>  4 files changed, 18 insertions(+), 1 deletion(-)

Acked-by: Will Deacon <will@kernel.org>

Will