From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Oliver Upton <oliver.upton@linux.dev>,
David Matlack <dmatlack@google.com>,
Marc Zyngier <maz@kernel.org>, James Morse <james.morse@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Huacai Chen <chenhuacai@kernel.org>,
Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>,
Anup Patel <anup@brainfault.org>,
Atish Patra <atishp@atishpatra.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Andrew Morton <akpm@linux-foundation.org>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Nadav Amit <namit@vmware.com>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Vlastimil Babka <vbabka@suse.cz>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Suren Baghdasaryan <surenb@google.com>,
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Mingwei Zhang <mizhang@google.com>,
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Subject: Re: [RFC PATCH 00/37] KVM: Refactor the KVM/x86 TDP MMU into common code
Date: Mon, 12 Dec 2022 23:26:35 +0000 [thread overview]
Message-ID: <Y5e4qxjHWoMt8YGs@google.com> (raw)
In-Reply-To: <eb93beee-9d43-1c1e-250c-28ab7e9ebed9@redhat.com>
On Mon, Dec 12, 2022, Paolo Bonzini wrote:
> On 12/9/22 20:07, Oliver Upton wrote:
> > > - Naming. This series does not change the names of any existing code.
> > > So all the KVM/x86 Shadow MMU-style terminology like
> > > "shadow_page"/"sp"/"spte" persists. Should we keep that style in
> > > common code or move toward something less shadow-paging-specific?
> > > e.g. "page_table"/"pt"/"pte".
> >
> > I would strongly be in favor of discarding the shadow paging residue if
> > x86 folks are willing to part ways with it 😄
>
> Yes, absolutely. Something like to_shadow_page->to_mmu_data, sp->md,
> spt->hpt, spte->spte, sptep->hptep.
"host" will be confusing if when the primary MMU is involved though, e.g. I always
think of the primary MMU's page tables as the "host page tables".
What if we keep the "S" for SPT(E) and repurpose it to mean Secondary PTE?
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next prev parent reply other threads:[~2022-12-12 23:27 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-08 19:38 [RFC PATCH 00/37] KVM: Refactor the KVM/x86 TDP MMU into common code David Matlack
2022-12-08 19:38 ` [RFC PATCH 01/37] KVM: x86/mmu: Store the address space ID directly in kvm_mmu_page_role David Matlack
2022-12-09 2:37 ` Yang, Weijiang
2022-12-09 17:24 ` Oliver Upton
2022-12-09 17:40 ` David Matlack
2022-12-12 17:39 ` Sean Christopherson
2022-12-12 18:17 ` Oliver Upton
2022-12-13 1:11 ` David Matlack
2022-12-12 22:50 ` Paolo Bonzini
2022-12-13 1:18 ` David Matlack
2022-12-13 1:42 ` Sean Christopherson
2022-12-14 9:50 ` Lai Jiangshan
2022-12-14 19:42 ` Sean Christopherson
2022-12-15 7:20 ` Lai Jiangshan
2022-12-08 19:38 ` [RFC PATCH 02/37] KVM: MMU: Move struct kvm_mmu_page_role into common code David Matlack
2022-12-12 17:48 ` Ben Gardon
2022-12-12 23:11 ` Paolo Bonzini
2022-12-13 1:06 ` David Matlack
2022-12-08 19:38 ` [RFC PATCH 03/37] KVM: MMU: Move tdp_ptep_t " David Matlack
2022-12-08 19:38 ` [RFC PATCH 04/37] KVM: x86/mmu: Invert sp->tdp_mmu_page to sp->shadow_mmu_page David Matlack
2022-12-12 23:15 ` Paolo Bonzini
2023-01-11 22:45 ` David Matlack
2022-12-08 19:38 ` [RFC PATCH 05/37] KVM: x86/mmu: Unify TDP MMU and Shadow MMU root refcounts David Matlack
2022-12-08 19:38 ` [RFC PATCH 06/37] KVM: MMU: Move struct kvm_mmu_page to common code David Matlack
2022-12-12 18:07 ` Ben Gardon
2022-12-12 22:32 ` Paolo Bonzini
2022-12-12 22:49 ` David Matlack
2022-12-08 19:38 ` [RFC PATCH 07/37] mm: Introduce architecture-neutral PG_LEVEL macros David Matlack
2022-12-08 19:38 ` [RFC PATCH 08/37] KVM: selftests: Stop assuming stats are contiguous in kvm_binary_stats_test David Matlack
2022-12-08 19:38 ` [RFC PATCH 09/37] KVM: Move page size stats into common code David Matlack
2022-12-08 19:38 ` [RFC PATCH 10/37] KVM: MMU: Move struct kvm_page_fault to " David Matlack
2022-12-12 18:24 ` Ben Gardon
2022-12-12 22:30 ` David Matlack
2022-12-12 22:27 ` Paolo Bonzini
2023-01-09 18:55 ` David Matlack
2022-12-08 19:38 ` [RFC PATCH 11/37] KVM: MMU: Move RET_PF_* into " David Matlack
2022-12-08 19:38 ` [RFC PATCH 12/37] KVM: x86/mmu: Use PG_LEVEL_{PTE,PMD,PUD} in the TDP MMU David Matlack
2022-12-08 19:38 ` [RFC PATCH 13/37] KVM: MMU: Move sptep_to_sp() to common code David Matlack
2022-12-08 19:38 ` [RFC PATCH 14/37] KVM: MMU: Introduce common macros for TDP page tables David Matlack
2022-12-08 19:38 ` [RFC PATCH 15/37] KVM: x86/mmu: Add a common API for inspecting/modifying TDP PTEs David Matlack
2022-12-08 19:38 ` [RFC PATCH 16/37] KVM: x86/mmu: Abstract away TDP MMU root lookup David Matlack
2022-12-08 19:38 ` [RFC PATCH 17/37] KVM: Move struct kvm_gfn_range to kvm_types.h David Matlack
2022-12-12 19:16 ` Ben Gardon
2022-12-08 19:38 ` [RFC PATCH 18/37] KVM: x86/mmu: Add common API for creating TDP PTEs David Matlack
2022-12-08 19:38 ` [RFC PATCH 19/37] KVM: x86/mmu: Add arch hooks for NX Huge Pages David Matlack
2022-12-08 19:38 ` [RFC PATCH 20/37] KVM: x86/mmu: Abstract away computing the max mapping level David Matlack
2022-12-12 19:32 ` Ben Gardon
2022-12-12 21:05 ` David Matlack
2022-12-13 1:02 ` Sean Christopherson
2022-12-08 19:38 ` [RFC PATCH 21/37] KVM: Introduce CONFIG_HAVE_TDP_MMU David Matlack
2022-12-08 19:38 ` [RFC PATCH 22/37] KVM: x86: Select HAVE_TDP_MMU if X86_64 David Matlack
2022-12-08 19:38 ` [RFC PATCH 23/37] KVM: MMU: Move VM-level TDP MMU state to struct kvm David Matlack
2022-12-09 17:31 ` Oliver Upton
2022-12-09 17:57 ` David Matlack
2022-12-09 18:30 ` Oliver Upton
2022-12-08 19:38 ` [RFC PATCH 24/37] KVM: x86/mmu: Move kvm_mmu_hugepage_adjust() up to fault handler David Matlack
2022-12-08 19:38 ` [RFC PATCH 25/37] KVM: x86/mmu: Pass root role to kvm_tdp_mmu_get_vcpu_root_hpa() David Matlack
2022-12-08 19:38 ` [RFC PATCH 26/37] KVM: Move page table cache to struct kvm_vcpu David Matlack
2022-12-08 19:38 ` [RFC PATCH 27/37] KVM: MMU: Move mmu_page_header_cache to common code David Matlack
2022-12-08 19:38 ` [RFC PATCH 28/37] KVM: MMU: Stub out tracepoints on non-x86 architectures David Matlack
2022-12-08 19:38 ` [RFC PATCH 29/37] KVM: x86/mmu: Collapse kvm_flush_remote_tlbs_with_{range,address}() together David Matlack
2022-12-08 19:38 ` [RFC PATCH 30/37] KVM: x86/mmu: Rename kvm_flush_remote_tlbs_with_address() David Matlack
2022-12-08 19:38 ` [RFC PATCH 31/37] KVM: x86/MMU: Use gfn_t in kvm_flush_remote_tlbs_range() David Matlack
2022-12-08 19:38 ` [RFC PATCH 32/37] KVM: Allow range-based TLB invalidation from common code David Matlack
2022-12-08 19:38 ` [RFC PATCH 33/37] KVM: Move kvm_arch_flush_remote_tlbs_memslot() to " David Matlack
2022-12-12 22:03 ` Ben Gardon
2022-12-12 22:42 ` David Matlack
2022-12-08 19:38 ` [RFC PATCH 34/37] KVM: MMU: Move the TDP iterator " David Matlack
2022-12-08 19:38 ` [RFC PATCH 35/37] KVM: x86/mmu: Move tdp_mmu_max_gfn_exclusive() to tdp_pgtable.c David Matlack
2022-12-08 19:38 ` [RFC PATCH 36/37] KVM: x86/mmu: Move is_tdp_mmu_page() to mmu_internal.h David Matlack
2022-12-08 19:38 ` [RFC PATCH 37/37] KVM: MMU: Move the TDP MMU to common code David Matlack
2022-12-09 19:07 ` [RFC PATCH 00/37] KVM: Refactor the KVM/x86 TDP MMU into " Oliver Upton
2022-12-10 1:07 ` David Matlack
2022-12-12 22:54 ` Paolo Bonzini
2022-12-12 23:26 ` Sean Christopherson [this message]
2022-12-12 23:43 ` Paolo Bonzini
2023-01-19 17:14 ` David Matlack
2023-01-19 17:23 ` Paolo Bonzini
2023-01-19 17:24 ` Marc Zyngier
2023-01-19 18:38 ` David Matlack
2023-01-19 19:04 ` David Matlack
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