From: Binbin Wu <binbin.wu@linux.intel.com>
To: Yan Zhao <yan.y.zhao@intel.com>
Cc: pbonzini@redhat.com, seanjc@google.com,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
x86@kernel.org, rick.p.edgecombe@intel.com,
dave.hansen@intel.com, kas@kernel.org, tabba@google.com,
ackerleytng@google.com, michael.roth@amd.com, david@redhat.com,
vannapurve@google.com, vbabka@suse.cz, thomas.lendacky@amd.com,
pgonda@google.com, fan.du@intel.com, jun.miao@intel.com,
ira.weiny@intel.com, isaku.yamahata@intel.com,
xiaoyao.li@intel.com, chao.p.peng@intel.com
Subject: Re: [RFC PATCH v2 14/23] KVM: TDX: Split and inhibit huge mappings if a VMExit carries level info
Date: Wed, 19 Nov 2025 14:39:28 +0800 [thread overview]
Message-ID: <4a2a75d2-05b5-4132-a3ea-fb2ec876b7c2@linux.intel.com> (raw)
In-Reply-To: <aR1j5SlA/YlOL8zo@yzhao56-desk.sh.intel.com>
On 11/19/2025 2:29 PM, Yan Zhao wrote:
[...]
>>> +static inline int tdx_check_accept_level(struct kvm_vcpu *vcpu, gfn_t gfn)
>> The function name sounds like it is just doing check, but it may split a
>> hugepage on mismatch.
>>
>> How about tdx_enforce_accept_level_mapping() or something else to reflect
>> the change could be make?
> What about tdx_honor_guest_accept_level()?
It looks good to me.
next prev parent reply other threads:[~2025-11-19 6:39 UTC|newest]
Thread overview: 129+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-07 9:39 [RFC PATCH v2 00/23] KVM: TDX huge page support for private memory Yan Zhao
2025-08-07 9:41 ` [RFC PATCH v2 01/23] x86/tdx: Enhance tdh_mem_page_aug() to support huge pages Yan Zhao
2025-08-07 9:41 ` [RFC PATCH v2 02/23] x86/virt/tdx: Add SEAMCALL wrapper tdh_mem_page_demote() Yan Zhao
2025-09-01 8:55 ` Binbin Wu
2025-09-01 9:08 ` Yan Zhao
2025-09-02 16:56 ` Edgecombe, Rick P
2025-09-02 17:37 ` Sean Christopherson
2025-09-02 17:45 ` Edgecombe, Rick P
2025-09-04 9:31 ` Yan Zhao
2025-11-11 9:15 ` Huang, Kai
2025-11-12 8:06 ` Yan Zhao
2025-11-14 9:14 ` Binbin Wu
2025-11-14 9:21 ` Yan Zhao
2025-08-07 9:42 ` [RFC PATCH v2 03/23] x86/tdx: Enhance tdh_phymem_page_wbinvd_hkid() to invalidate huge pages Yan Zhao
2025-11-11 9:23 ` Huang, Kai
2025-11-12 8:43 ` Yan Zhao
2025-11-12 10:29 ` Huang, Kai
2025-11-13 2:35 ` Yan Zhao
2025-11-13 7:37 ` Huang, Kai
2025-11-13 9:03 ` Yan Zhao
2025-11-13 15:26 ` Dave Hansen
2025-11-14 1:21 ` Yan Zhao
2025-12-10 1:14 ` Vishal Annapurve
2025-12-10 1:18 ` Yan Zhao
2025-12-10 1:30 ` Vishal Annapurve
2025-12-10 1:55 ` Yan Zhao
2025-12-31 19:37 ` Vishal Annapurve
2026-01-06 10:37 ` Yan Zhao
2025-08-07 9:42 ` [RFC PATCH v2 04/23] KVM: TDX: Introduce tdx_clear_folio() to clear " Yan Zhao
2025-09-02 2:56 ` Binbin Wu
2025-09-03 9:51 ` Yan Zhao
2025-09-03 11:19 ` Binbin Wu
2025-09-04 2:53 ` Yan Zhao
2025-08-07 9:42 ` [RFC PATCH v2 05/23] x86/tdx: Enhance tdh_phymem_page_reclaim() to support " Yan Zhao
2025-11-17 2:09 ` Binbin Wu
2025-11-17 4:05 ` Yan Zhao
2025-08-07 9:42 ` [RFC PATCH v2 06/23] KVM: TDX: Do not hold page refcount on private guest pages Yan Zhao
2025-08-07 9:42 ` [RFC PATCH v2 07/23] KVM: x86/mmu: Disallow page merging (huge page adjustment) for mirror root Yan Zhao
2025-08-07 9:43 ` [RFC PATCH v2 08/23] KVM: x86/tdp_mmu: Alloc external_spt page for mirror page table splitting Yan Zhao
2025-11-11 9:52 ` Huang, Kai
2025-11-12 9:29 ` Yan Zhao
2025-08-07 9:43 ` [RFC PATCH v2 09/23] KVM: x86/tdp_mmu: Add split_external_spt hook called during write mmu_lock Yan Zhao
2025-11-11 10:06 ` Huang, Kai
2025-11-13 3:16 ` Yan Zhao
2025-11-17 8:53 ` Binbin Wu
2025-11-17 9:09 ` Yan Zhao
2025-08-07 9:43 ` [RFC PATCH v2 10/23] KVM: TDX: Enable huge page splitting under write kvm->mmu_lock Yan Zhao
2025-11-11 10:20 ` Huang, Kai
2025-11-13 5:53 ` Yan Zhao
2025-11-17 9:17 ` Binbin Wu
2025-11-17 9:26 ` Yan Zhao
2025-12-09 23:49 ` Sagi Shahar
2025-12-09 23:54 ` Edgecombe, Rick P
2025-12-10 0:28 ` Sagi Shahar
2025-12-10 0:50 ` Yan Zhao
2025-12-10 17:16 ` Sagi Shahar
2025-12-10 19:49 ` Edgecombe, Rick P
2025-12-11 2:10 ` Yan Zhao
2025-08-07 9:43 ` [RFC PATCH v2 11/23] KVM: x86: Reject splitting huge pages under shared mmu_lock for mirror root Yan Zhao
2025-09-03 3:30 ` Binbin Wu
2025-08-07 9:43 ` [RFC PATCH v2 12/23] KVM: x86/mmu: Introduce kvm_split_cross_boundary_leafs() Yan Zhao
2025-09-03 6:57 ` Binbin Wu
2025-09-03 9:44 ` Yan Zhao
2025-11-11 10:42 ` Huang, Kai
2025-11-13 8:54 ` Yan Zhao
2025-11-13 11:02 ` Huang, Kai
2025-11-13 11:40 ` Huang, Kai
2025-11-14 6:09 ` Yan Zhao
2025-11-18 0:14 ` Huang, Kai
2025-11-18 6:30 ` Yan Zhao
2025-11-18 8:59 ` Binbin Wu
2025-11-18 10:49 ` Huang, Kai
2025-11-19 3:41 ` Yan Zhao
2026-01-06 10:35 ` Yan Zhao
2025-11-19 6:23 ` Yan Zhao
2025-11-19 6:31 ` Yan Zhao
2025-08-07 9:44 ` [RFC PATCH v2 13/23] KVM: x86: Introduce hugepage_set_guest_inhibit() Yan Zhao
2025-08-07 9:44 ` [RFC PATCH v2 14/23] KVM: TDX: Split and inhibit huge mappings if a VMExit carries level info Yan Zhao
2025-09-03 7:36 ` Binbin Wu
2025-09-03 9:37 ` Yan Zhao
2025-11-11 10:55 ` Huang, Kai
2025-11-14 1:42 ` Yan Zhao
2025-11-18 0:26 ` Huang, Kai
2025-11-18 2:44 ` Yan Zhao
2025-11-11 11:05 ` Huang, Kai
2025-11-14 7:22 ` Yan Zhao
2025-11-18 1:04 ` Huang, Kai
2025-11-18 2:20 ` Yan Zhao
2025-11-18 9:44 ` Huang, Kai
2025-11-19 2:58 ` Yan Zhao
2025-11-19 5:51 ` Binbin Wu
2025-11-19 6:29 ` Yan Zhao
2025-11-19 6:39 ` Binbin Wu [this message]
2025-08-07 9:44 ` [RFC PATCH v2 15/23] KVM: Change the return type of gfn_handler_t() from bool to int Yan Zhao
2025-08-07 9:44 ` [RFC PATCH v2 16/23] KVM: x86: Split cross-boundary mirror leafs for KVM_SET_MEMORY_ATTRIBUTES Yan Zhao
2025-08-07 9:45 ` [RFC PATCH v2 17/23] KVM: guest_memfd: Split for punch hole and private-to-shared conversion Yan Zhao
2025-09-04 7:58 ` Binbin Wu
2025-09-04 9:48 ` Yan Zhao
2025-09-04 11:07 ` Yan Zhao
2025-10-01 6:21 ` Ackerley Tng
2025-10-13 0:18 ` Yan Zhao
2025-10-01 8:00 ` Ackerley Tng
2025-10-13 0:45 ` Yan Zhao
2025-08-07 9:45 ` [RFC PATCH v2 18/23] x86/virt/tdx: Do not perform cache flushes unless CLFLUSH_BEFORE_ALLOC is set Yan Zhao
2025-08-11 21:10 ` Sagi Shahar
2025-08-12 6:37 ` Yan Zhao
2025-09-04 8:16 ` Binbin Wu
2025-09-04 9:50 ` Yan Zhao
2025-09-05 9:05 ` Binbin Wu
2025-09-05 15:41 ` Edgecombe, Rick P
2025-09-15 6:05 ` Yan Zhao
2025-08-07 9:45 ` [RFC PATCH v2 19/23] KVM: TDX: Pass down pfn to split_external_spt() Yan Zhao
2025-09-04 8:30 ` Binbin Wu
2025-08-07 9:45 ` [RFC PATCH v2 20/23] KVM: TDX: Handle Dynamic PAMT in tdh_mem_page_demote() Yan Zhao
2025-08-07 9:46 ` [RFC PATCH v2 21/23] KVM: TDX: Preallocate PAMT pages to be used in split path Yan Zhao
2025-09-04 9:17 ` Binbin Wu
2025-09-04 9:58 ` Yan Zhao
2025-12-05 6:14 ` Sagi Shahar
2025-12-08 5:49 ` Yan Zhao
2025-12-11 1:42 ` Vishal Annapurve
2025-12-11 2:36 ` Yan Zhao
2025-08-07 9:46 ` [RFC PATCH v2 22/23] KVM: TDX: Handle Dynamic PAMT on page split Yan Zhao
2025-08-14 5:31 ` Vishal Annapurve
2025-08-14 18:29 ` Vishal Annapurve
2025-08-18 4:19 ` Yan Zhao
2025-08-07 9:46 ` [RFC PATCH v2 23/23] KVM: TDX: Turn on PG_LEVEL_2M after TD is RUNNABLE Yan Zhao
2025-11-11 11:25 ` Huang, Kai
2025-11-14 8:34 ` Yan Zhao
2025-11-18 0:56 ` Huang, Kai
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