linux-kernel - [PATCH 0/2] KVM: SVM: Align SVM with APM defined behaviors

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Message-ID: <20260106041250.2125920-1-chengkev@google.com>
Date: Tue,  6 Jan 2026 04:12:48 +0000
From: Kevin Cheng <chengkev@...gle.com>
To: seanjc@...gle.com, pbonzini@...hat.com
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, yosry.ahmed@...ux.dev, 
	Kevin Cheng <chengkev@...gle.com>
Subject: [PATCH 0/2] KVM: SVM: Align SVM with APM defined behaviors

The APM lists the following behaviors
  - The VMRUN, VMLOAD, VMSAVE, CLGI, VMMCALL, and INVLPGA instructions
    can be used when the EFER.SVME is set to 1; otherwise, these
    instructions generate a #UD exception.
  - If VMMCALL instruction is not intercepted, the instruction raises a
    #UD exception.

The patches in this series fix current SVM bugs that do not adhere to
the APM listed behaviors.

Kevin Cheng (2):
  KVM: SVM: Generate #UD for certain instructions when SVME.EFER is
    disabled
  KVM: SVM: Raise #UD if VMMCALL instruction is not intercepted

 arch/x86/kvm/svm/svm.c | 43 +++++++++++++++++++++++++++++++++++++++---
 1 file changed, 40 insertions(+), 3 deletions(-)

--
2.52.0.351.gbe84eed79e-goog