Commit f41ceff1 authored by Roman Kisel's avatar Roman Kisel Committed by Wei Liu
Browse files

Drivers: hv: Enable VTL mode for arm64 



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: default avatarRoman Kisel <romank@linux.microsoft.com>
Reviewed-by: default avatarMichael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/20250428210742.435282-4-romank@linux.microsoft.com


Signed-off-by: default avatarWei Liu <wei.liu@kernel.org>
Message-ID: <20250428210742.435282-4-romank@linux.microsoft.com>
parent 36ebd328

drivers/hv/Kconfig

+3 −3
Original line number Diff line number Diff line
@@ -5,7 +5,7 @@ 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)

	select PARAVIRT

	select X86_HV_CALLBACK_VECTOR if X86

	select OF_EARLY_FLATTREE if OF
@@ -15,7 +15,7 @@ config HYPERV 


config HYPERV_VTL_MODE

	bool "Enable Linux to boot in VTL context"

	depends on X86_64 && HYPERV

	depends on (X86_64 || ARM64) && HYPERV

	depends on SMP

	default n

	help
@@ -31,7 +31,7 @@ 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.