linux-kernel - Re: [PATCH] KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR

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Date:   Wed, 4 May 2022 21:11:52 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Maxim Levitsky <mlevitsk@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>
Cc:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Ben Gardon <bgardon@...gle.com>,
        David Matlack <dmatlack@...gle.com>
Subject: Re: [PATCH] KVM: x86/mmu: Do not create SPTEs for GFNs that exceed
 host.MAXPHYADDR

On 5/4/22 14:08, Maxim Levitsky wrote:
> Nope, still reproduces.
> 
> I'll think on how to trace this, maybe that will give me some ideas.
> Anything useful to dump from the mmu pages that are still not freed at that point?

Perhaps you can dump the gpa and TSC of the allocation, and also print 
the TSC right before destroy_workqueue?

Paolo