@@ -5,18 +5,20 @@ menu "Microsoft Hyper-V guest support"
config HYPERV
tristate "Microsoft Hyper-V client drivers"
depends on (X86 && X86_LOCAL_APIC && HYPERVISOR_GUEST) \
- || (ACPI && ARM64 && !CPU_BIG_ENDIAN)
+ || (ARM64 && !CPU_BIG_ENDIAN)
+ depends on (ACPI || HYPERV_VTL_MODE)
select PARAVIRT
select X86_HV_CALLBACK_VECTOR if X86
- select OF_EARLY_FLATTREE if OF
help
Select this option to run Linux as a Hyper-V client operating
system.
config HYPERV_VTL_MODE
bool "Enable Linux to boot in VTL context"
- depends on X86_64 && HYPERV
+ depends on (X86 || ARM64)
depends on SMP
+ select OF_EARLY_FLATTREE
+ select OF
default n
help
Virtual Secure Mode (VSM) is a set of hypervisor capabilities and
@@ -31,7 +33,7 @@ config HYPERV_VTL_MODE
Select this option to build a Linux kernel to run at a VTL other than
the normal VTL0, which currently is only VTL2. This option
- initializes the x86 platform for VTL2, and adds the ability to boot
+ initializes the kernel to run in VTL2, and adds the ability to boot
secondary CPUs directly into 64-bit context as required for VTLs other
than 0. A kernel built with this option must run at VTL2, and will
not run as a normal guest.
Kconfig dependencies for arm64 guests on Hyper-V require that be ACPI enabled, and limit VTL mode to x86/x64. To enable VTL mode on arm64 as well, update the dependencies. Since VTL mode requires DeviceTree instead of ACPI, don’t require arm64 guests on Hyper-V to have ACPI unconditionally. Signed-off-by: Roman Kisel <romank@linux.microsoft.com> --- drivers/hv/Kconfig | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)