1 # SPDX-License-Identifier: GPL-2.0
3 menu "Microsoft Hyper-V guest support"
6 tristate "Microsoft Hyper-V client drivers"
7 depends on (X86 && X86_LOCAL_APIC && HYPERVISOR_GUEST) \
8 || (ACPI && ARM64 && !CPU_BIG_ENDIAN)
10 select X86_HV_CALLBACK_VECTOR if X86
11 select OF_EARLY_FLATTREE if OF
13 Select this option to run Linux as a Hyper-V client operating
16 config HYPERV_VTL_MODE
17 bool "Enable Linux to boot in VTL context"
18 depends on X86_64 && HYPERV
21 Virtual Secure Mode (VSM) is a set of hypervisor capabilities and
22 enlightenments offered to host and guest partitions which enables
23 the creation and management of new security boundaries within
24 operating system software.
26 VSM achieves and maintains isolation through Virtual Trust Levels
27 (VTLs). Virtual Trust Levels are hierarchical, with higher levels
28 being more privileged than lower levels. VTL0 is the least privileged
29 level, and currently only other level supported is VTL2.
31 Select this option to build a Linux kernel to run at a VTL other than
32 the normal VTL0, which currently is only VTL2. This option
33 initializes the x86 platform for VTL2, and adds the ability to boot
34 secondary CPUs directly into 64-bit context as required for VTLs other
35 than 0. A kernel built with this option must run at VTL2, and will
36 not run as a normal guest.
41 def_bool HYPERV && X86
44 tristate "Microsoft Hyper-V Utilities driver"
45 depends on HYPERV && CONNECTOR && NLS
46 depends on PTP_1588_CLOCK_OPTIONAL
48 Select this option to enable the Hyper-V Utilities.
51 tristate "Microsoft Hyper-V Balloon driver"
55 Select this option to enable Hyper-V Balloon driver.