linux-kernel - Re: [PATCH v3 09/12] KVM: x86/mmu: Replace MMU_DEBUG with proper KVM_PROVE

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Date:   Tue, 1 Aug 2023 16:02:01 +0200
From:   Philippe Mathieu-Daudé <philmd@...aro.org>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mingwei Zhang <mizhang@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        Jim Mattson <jmattson@...gle.com>
Subject: Re: [PATCH v3 09/12] KVM: x86/mmu: Replace MMU_DEBUG with proper
 KVM_PROVE_MMU Kconfig

On 29/7/23 02:47, Sean Christopherson wrote:
> Replace MMU_DEBUG, which requires manually modifying KVM to enable the
> macro, with a proper Kconfig, KVM_PROVE_MMU.  Now that pgprintk() and
> rmap_printk() are gone, i.e. the macro guards only KVM_MMU_WARN_ON() and
> won't flood the kernel logs, enabling the option for debug kernels is both
> desirable and feasible.
> 
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>
> ---
>   arch/x86/kvm/Kconfig            | 13 +++++++++++++
>   arch/x86/kvm/mmu/mmu.c          |  2 +-
>   arch/x86/kvm/mmu/mmu_internal.h |  4 +---
>   3 files changed, 15 insertions(+), 4 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@...aro.org>