linux-kernel - [RFC PATCH 05/18] KVM: x86: Add pt_guest_exec_control to kvm_vcpu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250313203702.575156-6-jon@nutanix.com>
Date: Thu, 13 Mar 2025 13:36:44 -0700
From: Jon Kohler <jon@...anix.com>
To: seanjc@...gle.com, pbonzini@...hat.com, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        x86@...nel.org, hpa@...or.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc: Jon Kohler <jon@...anix.com>
Subject: [RFC PATCH 05/18] KVM: x86: Add pt_guest_exec_control to kvm_vcpu_arch

Add bool for pt_guest_exec_control to kvm_vcpu_arch, to be used for
runtime checks for Intel Mode Based Execution Control (MBEC) and
AMD Guest Mode Execute Control (GMET).

Signed-off-by: Jon Kohler <jon@...anix.com>

---
 arch/x86/include/asm/kvm_host.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index fd37dad38670..192233eb557a 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -856,6 +856,8 @@ struct kvm_vcpu_arch {
 	struct kvm_hypervisor_cpuid kvm_cpuid;
 	bool is_amd_compatible;
 
+	bool pt_guest_exec_control;
+
 	/*
 	 * FIXME: Drop this macro and use KVM_NR_GOVERNED_FEATURES directly
 	 * when "struct kvm_vcpu_arch" is no longer defined in an
-- 
2.43.0