linux-kernel - [PATCH 1/4] x86/hyperv: Move VMCB enlightenment definitions to hyperv-tlfs.h

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:   Wed, 21 Sep 2022 20:16:04 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:     linux-hyperv@...r.kernel.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] x86/hyperv: Move VMCB enlightenment definitions to hyperv-tlfs.h

Move Hyper-V's VMCB enlightenment definitions to the TLFS header; the
definitions come directly from the TLFS[*], not from KVM.

No functional change intended.

[*] https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/tlfs/datatypes/hv_svm_enlightened_vmcb_fields

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 arch/x86/include/asm/hyperv-tlfs.h | 22 +++++++++++++++++++
 arch/x86/kvm/svm/hyperv.h          | 35 ------------------------------
 arch/x86/kvm/svm/svm_onhyperv.h    |  3 ++-
 3 files changed, 24 insertions(+), 36 deletions(-)
 delete mode 100644 arch/x86/kvm/svm/hyperv.h

diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index 0a9407dc0859..4c4f81daf5a2 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -584,6 +584,28 @@ struct hv_enlightened_vmcs {
 
 #define HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL			0xFFFF
 
+/*
+ * Hyper-V uses the software reserved 32 bytes in VMCB control area to expose
+ * SVM enlightenments to guests.
+ */
+struct hv_enlightenments {
+	struct __packed hv_enlightenments_control {
+		u32 nested_flush_hypercall:1;
+		u32 msr_bitmap:1;
+		u32 enlightened_npt_tlb: 1;
+		u32 reserved:29;
+	} __packed hv_enlightenments_control;
+	u32 hv_vp_id;
+	u64 hv_vm_id;
+	u64 partition_assist_page;
+	u64 reserved;
+} __packed;
+
+/*
+ * Hyper-V uses the software reserved clean bit in VMCB.
+ */
+#define VMCB_HV_NESTED_ENLIGHTENMENTS		31
+
 struct hv_partition_assist_pg {
 	u32 tlb_lock_count;
 };
diff --git a/arch/x86/kvm/svm/hyperv.h b/arch/x86/kvm/svm/hyperv.h
deleted file mode 100644
index 7d6d97968fb9..000000000000
--- a/arch/x86/kvm/svm/hyperv.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Common Hyper-V on KVM and KVM on Hyper-V definitions (SVM).
- */
-
-#ifndef __ARCH_X86_KVM_SVM_HYPERV_H__
-#define __ARCH_X86_KVM_SVM_HYPERV_H__
-
-#include <asm/mshyperv.h>
-
-#include "../hyperv.h"
-
-/*
- * Hyper-V uses the software reserved 32 bytes in VMCB
- * control area to expose SVM enlightenments to guests.
- */
-struct hv_enlightenments {
-	struct __packed hv_enlightenments_control {
-		u32 nested_flush_hypercall:1;
-		u32 msr_bitmap:1;
-		u32 enlightened_npt_tlb: 1;
-		u32 reserved:29;
-	} __packed hv_enlightenments_control;
-	u32 hv_vp_id;
-	u64 hv_vm_id;
-	u64 partition_assist_page;
-	u64 reserved;
-} __packed;
-
-/*
- * Hyper-V uses the software reserved clean bit in VMCB
- */
-#define VMCB_HV_NESTED_ENLIGHTENMENTS VMCB_SW
-
-#endif /* __ARCH_X86_KVM_SVM_HYPERV_H__ */
diff --git a/arch/x86/kvm/svm/svm_onhyperv.h b/arch/x86/kvm/svm/svm_onhyperv.h
index e2fc59380465..8d02654ad6f8 100644
--- a/arch/x86/kvm/svm/svm_onhyperv.h
+++ b/arch/x86/kvm/svm/svm_onhyperv.h
@@ -8,8 +8,9 @@
 
 #if IS_ENABLED(CONFIG_HYPERV)
 
+#include <asm/mshyperv.h>
+
 #include "kvm_onhyperv.h"
-#include "svm/hyperv.h"
 
 static struct kvm_x86_ops svm_x86_ops;
 
-- 
2.37.3.968.ga6b4b080e4-goog