From: Paolo Bonzini <pbonzini@redhat.com>
To: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: David Matlack <dmatlack@google.com>,
kvm@vger.kernel.org, Ben Gardon <bgardon@google.com>,
Joerg Roedel <joro@8bytes.org>, Jim Mattson <jmattson@google.com>,
Wanpeng Li <wanpengli@tencent.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Janis Schoetterl-Glausch <scgl@linux.vnet.ibm.com>,
Junaid Shahid <junaids@google.com>,
Oliver Upton <oupton@google.com>,
Harish Barathvajasankar <hbarath@google.com>,
Peter Xu <peterx@redhat.com>, Peter Shier <pshier@google.com>
Subject: Re: [RFC PATCH 06/15] KVM: x86/mmu: Derive page role from parent
Date: Sat, 27 Nov 2021 11:26:58 +0100 [thread overview]
Message-ID: <669c9fff-e044-d580-8eac-9f83e122d273@redhat.com> (raw)
In-Reply-To: <CAJhGHyD5uu9+77nWMmg7sW_s0uuO_zfPW+8MjWd__ZZzKpL34A@mail.gmail.com>
On 11/27/21 03:07, Lai Jiangshan wrote:
> On Sat, Nov 20, 2021 at 9:02 PM Paolo Bonzini <pbonzini@redhat.com> wrote:
>
>>
>> I have a similar patch for the old MMU, but it was also replacing
>> shadow_root_level with shadow_root_role. I'll see if I can adapt it to
>> the TDP MMU, since the shadow_root_role is obviously the same for both.
>>
>
> Hello, Paolo
>
> I'm sorry to ask something unrelated to this patchset, but related
> to my pending work.
>
> I will still continue to do something on shadow_root_level. But I
> would like to wait until your shadow_root_role work is queued.
> And is it a part of work splitting the struct kvm_mmu?
Yes, more or less. I'm basically splitting the "CPU role" (the basic
and extended role from the processor registers) used for emulation, from
the "MMU role" (the basic role used for the root shadow page tables).
Then shadow_root_level/root_level become respectively mmu_role->level
and cpu_role->base.level.
Paolo
next prev parent reply other threads:[~2021-11-27 10:29 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-19 23:57 [RFC PATCH 00/15] KVM: x86/mmu: Eager Page Splitting for the TDP MMU David Matlack
2021-11-19 23:57 ` [RFC PATCH 01/15] KVM: x86/mmu: Rename rmap_write_protect to kvm_vcpu_write_protect_gfn David Matlack
2021-11-22 18:52 ` Ben Gardon
2021-11-26 12:18 ` Peter Xu
2021-11-19 23:57 ` [RFC PATCH 02/15] KVM: x86/mmu: Rename __rmap_write_protect to rmap_write_protect David Matlack
2021-11-22 18:52 ` Ben Gardon
2021-11-26 12:18 ` Peter Xu
2021-11-19 23:57 ` [RFC PATCH 03/15] KVM: x86/mmu: Automatically update iter->old_spte if cmpxchg fails David Matlack
2021-11-22 18:52 ` Ben Gardon
2021-11-30 23:25 ` David Matlack
2021-11-19 23:57 ` [RFC PATCH 04/15] KVM: x86/mmu: Factor out logic to atomically install a new page table David Matlack
2021-11-22 18:52 ` Ben Gardon
2021-11-30 23:27 ` David Matlack
2021-12-01 19:13 ` Sean Christopherson
2021-12-01 21:52 ` David Matlack
2021-11-19 23:57 ` [RFC PATCH 05/15] KVM: x86/mmu: Abstract mmu caches out to a separate struct David Matlack
2021-11-22 18:55 ` Ben Gardon
2021-11-22 18:55 ` Ben Gardon
2021-11-30 23:28 ` David Matlack
2021-11-19 23:57 ` [RFC PATCH 06/15] KVM: x86/mmu: Derive page role from parent David Matlack
2021-11-20 12:53 ` Paolo Bonzini
2021-11-27 2:07 ` Lai Jiangshan
2021-11-27 10:26 ` Paolo Bonzini [this message]
2021-11-30 23:31 ` David Matlack
2021-12-01 0:45 ` Sean Christopherson
2021-12-01 21:56 ` David Matlack
2021-11-19 23:57 ` [RFC PATCH 07/15] KVM: x86/mmu: Pass in vcpu->arch.mmu_caches instead of vcpu David Matlack
2021-11-22 18:56 ` Ben Gardon
2021-11-19 23:57 ` [RFC PATCH 08/15] KVM: x86/mmu: Helper method to check for large and present sptes David Matlack
2021-11-22 18:56 ` Ben Gardon
2021-12-01 18:34 ` Sean Christopherson
2021-12-01 21:13 ` David Matlack
2021-11-19 23:57 ` [RFC PATCH 09/15] KVM: x86/mmu: Move restore_acc_track_spte to spte.c David Matlack
2021-11-22 18:56 ` Ben Gardon
2021-11-19 23:57 ` [RFC PATCH 10/15] KVM: x86/mmu: Abstract need_resched logic from tdp_mmu_iter_cond_resched David Matlack
2021-11-22 18:56 ` Ben Gardon
2021-11-19 23:57 ` [RFC PATCH 11/15] KVM: x86/mmu: Refactor tdp_mmu iterators to take kvm_mmu_page root David Matlack
2021-11-22 18:56 ` Ben Gardon
2021-11-19 23:57 ` [RFC PATCH 12/15] KVM: x86/mmu: Split large pages when dirty logging is enabled David Matlack
2021-11-22 5:05 ` Nikunj A. Dadhania
2021-11-30 23:33 ` David Matlack
2021-11-22 19:30 ` Ben Gardon
2021-11-30 23:44 ` David Matlack
2021-11-26 12:01 ` Peter Xu
2021-11-30 23:56 ` David Matlack
2021-12-01 1:00 ` Sean Christopherson
2021-12-01 1:29 ` David Matlack
2021-12-01 2:29 ` Peter Xu
2021-12-01 18:29 ` Sean Christopherson
2021-12-01 21:36 ` David Matlack
2021-12-01 23:37 ` Sean Christopherson
2021-12-02 17:41 ` David Matlack
2021-12-02 18:42 ` Sean Christopherson
2021-12-03 0:00 ` David Matlack
2021-12-03 1:07 ` Sean Christopherson
2021-12-03 17:22 ` David Matlack
2021-11-19 23:57 ` [RFC PATCH 13/15] KVM: x86/mmu: Split large pages during CLEAR_DIRTY_LOG David Matlack
2021-11-26 12:17 ` Peter Xu
2021-12-01 0:16 ` David Matlack
2021-12-01 0:17 ` David Matlack
2021-12-01 4:03 ` Peter Xu
2021-12-01 22:14 ` David Matlack
2021-12-03 4:57 ` Peter Xu
2021-12-01 19:22 ` Sean Christopherson
2021-12-01 19:49 ` Ben Gardon
2021-12-01 20:16 ` Sean Christopherson
2021-12-01 22:11 ` Ben Gardon
2021-12-01 22:17 ` David Matlack
2021-12-05 13:30 ` [KVM] d3750a0923: WARNING:possible_circular_locking_dependency_detected kernel test robot
2021-12-05 13:30 ` kernel test robot
2021-12-06 6:55 ` Paolo Bonzini
2021-12-06 6:55 ` Paolo Bonzini
2021-12-06 17:19 ` David Matlack
2021-12-06 17:19 ` David Matlack
2021-11-19 23:57 ` [RFC PATCH 14/15] KVM: x86/mmu: Add tracepoint for splitting large pages David Matlack
2021-11-19 23:57 ` [RFC PATCH 15/15] KVM: x86/mmu: Update page stats when " David Matlack
2021-12-01 19:36 ` Sean Christopherson
2021-12-01 21:11 ` David Matlack
2021-11-26 14:13 ` [RFC PATCH 00/15] KVM: x86/mmu: Eager Page Splitting for the TDP MMU Peter Xu
2021-11-30 23:22 ` David Matlack
2021-12-01 4:10 ` Peter Xu
2021-12-01 4:19 ` Peter Xu
2021-12-01 21:46 ` David Matlack
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