linux-kernel - Re: [PATCH v2 15/20] kvm: x86/mmu: Support dirty logging for the TDP MMU

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Message-ID: <099dd316-4409-7430-d543-3a33a0ad2df1@redhat.com>
Date:   Mon, 19 Oct 2020 19:42:33 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Ben Gardon <bgardon@...gle.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, kvm <kvm@...r.kernel.org>,
        Cannon Matthews <cannonmatthews@...gle.com>,
        Peter Xu <peterx@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Peter Shier <pshier@...gle.com>,
        Peter Feiner <pfeiner@...gle.com>,
        Junaid Shahid <junaids@...gle.com>,
        Jim Mattson <jmattson@...gle.com>,
        Yulei Zhang <yulei.kernel@...il.com>,
        Wanpeng Li <kernellwp@...il.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Xiao Guangrong <xiaoguangrong.eric@...il.com>
Subject: Re: [PATCH v2 15/20] kvm: x86/mmu: Support dirty logging for the TDP
 MMU

On 19/10/20 19:07, Ben Gardon wrote:
> On Fri, Oct 16, 2020 at 9:18 AM Paolo Bonzini <pbonzini@...hat.com> wrote:
>>
>> On 14/10/20 20:26, Ben Gardon wrote:
>>>
>>> +     if (kvm->arch.tdp_mmu_enabled)
>>> +             kvm_tdp_mmu_clear_dirty_pt_masked(kvm, slot,
>>> +                             slot->base_gfn + gfn_offset, mask, true);
>>
>> This was "false" in v1, I need --verbose for this change. :)
> 
> I don't think this changed from v1. Note that there are two callers in
> mmu.c - kvm_mmu_write_protect_pt_masked and
> kvm_mmu_clear_dirty_pt_masked. One calls with wrprot = true and the
> other with wrprot = false.

Ah, I messed up fixing the conflicts.

Paolo