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.
As with v1, the TDX changes are compile-tested only.
v2:
- Complete my train of though in patch 1's changelog. [Binbin]
- Rename vmx_handle_exit_irqoff() => vt_handle_exit_irqoff. [Binbin, Sashiko]
- Collect a review. [Binbin]
- Move and rename everything I could find, using a dummy "struct vcpu_vmx_tdx"
to allow relocating common inline helpers from vmx.h to common.h.
v1: https://lore.kernel.org/all/20260814161129.2177118-1-seanjc@google.com
Sean Christopherson (8):
KVM: VMX: Move the shared "IRQs off" exit handler(s) to common code
KVM: VMX: Move the shared NMI handler/trampoline to common code
KVM: VMX: Disallowing using to_vmx() in common VT code
KVM: VMX: Rename posted interrupt prefixes from "vmx" to "vt"
KVM: VMX: Rename EPT violation handler prefix from "vmx" to "vt"
KVM: VMX: Use dummy pseudo-overlay struct for to_vt() and vt_to_vcpu()
KVM: VMX: Move common VT getters/converters to common.h
KVM: VMX: Rename common exit info getters prefixes from "vmx" to "vt"
arch/x86/kvm/vmx/common.h | 60 +++++++++++--
arch/x86/kvm/vmx/main.c | 92 ++++++++++++++++++-
arch/x86/kvm/vmx/nested.c | 36 ++++----
arch/x86/kvm/vmx/posted_intr.c | 20 +++--
arch/x86/kvm/vmx/posted_intr.h | 8 +-
arch/x86/kvm/vmx/tdx.c | 32 +++----
arch/x86/kvm/vmx/vmx.c | 155 ++++++++-------------------------
arch/x86/kvm/vmx/vmx.h | 37 --------
arch/x86/kvm/vmx/x86_ops.h | 1 -
9 files changed, 227 insertions(+), 214 deletions(-)
base-commit: 76671054f9a1ff6abb976583cd8da37650acdc97
--
2.55.0.887.g758fc8c411-goog