From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Xiaoyao Li <xiaoyao.li@intel.com>,
Kai Huang <kai.huang@intel.com>, Yan Zhao <yan.y.zhao@intel.com>,
Binbin Wu <binbin.wu@linux.intel.com>
Subject: Re: [PATCH v3 0/3] KVM: VMX: Explicitly track TDX VMs' root level
Date: Mon, 21 Sep 2026 07:05:14 -0700 [thread overview]
Message-ID: <178999888361.743033.9908769455046597723.b4-ty@google.com> (raw)
In-Reply-To: <20260902230932.2760127-1-seanjc@google.com>
On Wed, 02 Sep 2026 16:09:29 -0700, Sean Christopherson wrote:
> Fix a bug where a misbehaving (or niave?) userspace can configure guest CPUID
> such that KVM will use the "wrong" root level for its mirror EPTs and trip the
> KVM_BUG_ON() in tdx_load_mmu_pgd().
>
> v3:
> - Use kvm_mmu_get_max_tdp_level() in __kvm_mmu_create() to avoid what is
> effectively a false positive WARN. [Sashiko]
>
> [...]
Applied to kvm-x86 misc, thanks!
[1/3] KVM: x86/mmu: Use KVM's max TDP level to determine need for 32-bit TDP root
https://github.com/kvm-x86/linux/commit/7ed619909773
[2/3] KVM: VMX: Explicitly track TDX VMs' root level instead of guessing it from CPUID
https://github.com/kvm-x86/linux/commit/cc8a8f2a90b4
[3/3] KVM: VMX: Drop TDX_SHARED_BIT_PWL_{4,5} and dedup related code
https://github.com/kvm-x86/linux/commit/37e3197c50c8
--
https://github.com/kvm-x86/linux/tree/next
prev parent reply other threads:[~2026-09-21 14:06 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-02 23:09 Sean Christopherson
2026-09-02 23:09 ` [PATCH v3 1/3] KVM: x86/mmu: Use KVM's max TDP level to determine need for 32-bit TDP root Sean Christopherson
2026-09-09 14:08 ` Xiaoyao Li
2026-09-14 9:02 ` Yan Zhao
2026-09-17 0:12 ` Sean Christopherson
2026-09-02 23:09 ` [PATCH v3 2/3] KVM: VMX: Explicitly track TDX VMs' root level instead of guessing it from CPUID Sean Christopherson
2026-09-09 14:16 ` Xiaoyao Li
2026-09-02 23:09 ` [PATCH v3 3/3] KVM: VMX: Drop TDX_SHARED_BIT_PWL_{4,5} and dedup related code Sean Christopherson
2026-09-09 14:18 ` Xiaoyao Li
2026-09-14 9:05 ` Yan Zhao
2026-09-21 14:05 ` Sean Christopherson [this message]
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