Re: [PATCH v3 0/8] KVM: VMX: Harden against interpreting TDX vCPU as vcpu_vmx

[Sean Christopherson]

On Thu, 03 Sep 2026 18:03:45 -0700, Sean Christopherson wrote:
> Move and rename "all" (read: everything I could find) common helpers out of
> vmx.c and/or replace their vmx_ prefix with vt_, and then poison to_vmx() for
> all common .c files to harden KVM against misinterpreting a TDX vCPU as a VMX
> vCPU, i.e. consuming to_vmx() on a TDX vCPU.  Spotted when working through
> the bus lock series.
> 
> v3:
>  - Collect tags. [Kai, Xiaoyao, Binbin]
>  - Move the poisoning to patch 1. [Xiaoyao]
>  - s/Disallowing/Disallow. [Binbin, Kai]
>  - s/vmx_needs_pi_wakeup/vt_needs_pi_wakeup. [Xiaoyao]
> 
> [...]

Applied to kvm-x86 vmx, thanks!

[1/8] KVM: VMX: Disallow using to_vmx() in common VT code
      https://github.com/kvm-x86/linux/commit/05a0c1e2a525
[2/8] KVM: VMX: Move the shared "IRQs off" exit handler(s) to common code
      https://github.com/kvm-x86/linux/commit/903420c26086
[3/8] KVM: VMX: Move the shared NMI handler/trampoline to common code
      https://github.com/kvm-x86/linux/commit/81fbafddf6e5
[4/8] KVM: VMX: Rename posted interrupt prefixes from "vmx" to "vt"
      https://github.com/kvm-x86/linux/commit/09c6f74ecb86
[5/8] KVM: VMX: Rename EPT violation handler prefix from "vmx" to "vt"
      https://github.com/kvm-x86/linux/commit/96a113536fa0
[6/8] KVM: VMX: Use dummy pseudo-overlay struct for to_vt() and vt_to_vcpu()
      https://github.com/kvm-x86/linux/commit/881455777a02
[7/8] KVM: VMX: Move common VT getters/converters to common.h
      https://github.com/kvm-x86/linux/commit/d238df58b1e1
[8/8] KVM: VMX: Rename common exit info getters prefixes from "vmx" to "vt"
      https://github.com/kvm-x86/linux/commit/decbd448b05e

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https://github.com/kvm-x86/linux/tree/next