From: Roman Kisel Date: Mon, 28 Apr 2025 21:07:34 +0000 (-0700) Subject: Drivers: hv: Enable VTL mode for arm64 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f41ceff1748612b9e1538becc13dc2f1617d9d14;p=users%2Fdwmw2%2Flinux.git 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: Roman Kisel Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/20250428210742.435282-4-romank@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <20250428210742.435282-4-romank@linux.microsoft.com> --- diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig index 6c1416167bd2e..eefa0b559b73a 100644 --- a/drivers/hv/Kconfig +++ b/drivers/hv/Kconfig @@ -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.