From: Paolo Bonzini <pbonzini@redhat.com>
Date: Mon, 13 Apr 2026 11:04:48 +0000 (+0200)
Subject: Merge tag 'kvm-x86-vmxon-7.1' of https://github.com/kvm-x86/linux into HEAD
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4a530993dafec27085321424aeab303eb0e7869e;p=thirdparty%2Fkernel%2Flinux.git

Merge tag 'kvm-x86-vmxon-7.1' of https://github.com/kvm-x86/linux into HEAD

KVM x86 VMXON and EFER.SVME extraction for 7.1

Move _only_ VMXON+VMXOFF and EFER.SVME toggling out of KVM (versus all of VMX
and SVM enabling) out of KVM and into the core kernel so that non-KVM TDX
enabling, e.g. for trusted I/O, can make SEAMCALLs without needing to ensure
KVM is fully loaded.

TIO isn't a hypervisor, and isn't trying to be a hypervisor. Specifically, TIO
should _never_ have it's own VMCSes (that are visible to the host; the
TDX-Module has it's own VMCSes to do SEAMCALL/SEAMRET), and so there is simply
no reason to move that functionality out of KVM.

With that out of the way, dealing with VMXON/VMXOFF and EFER.SVME is a fairly
simple refcounting game.
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4a530993dafec27085321424aeab303eb0e7869e