1# SPDX-License-Identifier: GPL-2.0 2 3menu "Microsoft Hyper-V guest support" 4 5config HYPERV 6 tristate "Microsoft Hyper-V client drivers" 7 depends on (X86 && X86_LOCAL_APIC && HYPERVISOR_GUEST) \ 8 || (ACPI && ARM64 && !CPU_BIG_ENDIAN) 9 select PARAVIRT 10 select X86_HV_CALLBACK_VECTOR if X86 11 select OF_EARLY_FLATTREE if OF 12 help 13 Select this option to run Linux as a Hyper-V client operating 14 system. 15 16config HYPERV_VTL_MODE 17 bool "Enable Linux to boot in VTL context" 18 depends on X86_64 && HYPERV 19 depends on SMP 20 default n 21 help 22 Virtual Secure Mode (VSM) is a set of hypervisor capabilities and 23 enlightenments offered to host and guest partitions which enables 24 the creation and management of new security boundaries within 25 operating system software. 26 27 VSM achieves and maintains isolation through Virtual Trust Levels 28 (VTLs). Virtual Trust Levels are hierarchical, with higher levels 29 being more privileged than lower levels. VTL0 is the least privileged 30 level, and currently only other level supported is VTL2. 31 32 Select this option to build a Linux kernel to run at a VTL other than 33 the normal VTL0, which currently is only VTL2. This option 34 initializes the x86 platform for VTL2, and adds the ability to boot 35 secondary CPUs directly into 64-bit context as required for VTLs other 36 than 0. A kernel built with this option must run at VTL2, and will 37 not run as a normal guest. 38 39 If unsure, say N 40 41config HYPERV_TIMER 42 def_bool HYPERV && X86 43 44config HYPERV_UTILS 45 tristate "Microsoft Hyper-V Utilities driver" 46 depends on HYPERV && CONNECTOR && NLS 47 depends on PTP_1588_CLOCK_OPTIONAL 48 help 49 Select this option to enable the Hyper-V Utilities. 50 51config HYPERV_BALLOON 52 tristate "Microsoft Hyper-V Balloon driver" 53 depends on HYPERV 54 select PAGE_REPORTING 55 help 56 Select this option to enable Hyper-V Balloon driver. 57 58endmenu 59