From: Roman Kisel <romank@linux.microsoft.com>
To: arnd@arndb.de, bhelgaas@google.com, bp@alien8.de,
catalin.marinas@arm.com, conor+dt@kernel.org,
dave.hansen@linux.intel.com, decui@microsoft.com,
haiyangz@microsoft.com, hpa@zytor.com, krzk+dt@kernel.org,
kw@linux.com, kys@microsoft.com, lpieralisi@kernel.org,
manivannan.sadhasivam@linaro.org, mingo@redhat.com,
robh@kernel.org, ssengar@linux.microsoft.com, tglx@linutronix.de,
wei.liu@kernel.org, will@kernel.org, devicetree@vger.kernel.org,
linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org, x86@kernel.org
Cc: benhill@microsoft.com, bperkins@microsoft.com, sunilmut@microsoft.com
Subject: [PATCH hyperv-next v4 2/6] Drivers: hv: Enable VTL mode for arm64
Date: Tue, 11 Feb 2025 17:43:17 -0800 [thread overview]
Message-ID: <20250212014321.1108840-3-romank@linux.microsoft.com> (raw)
In-Reply-To: <20250212014321.1108840-1-romank@linux.microsoft.com>
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(-)
diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
index 862c47b191af..db9912ef96a8 100644
--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -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.
--
2.43.0
next prev parent reply other threads:[~2025-02-12 1:43 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-12 1:43 [PATCH hyperv-next v4 0/6] arm64: hyperv: Support Virtual Trust Level Boot Roman Kisel
2025-02-12 1:43 ` [PATCH hyperv-next v4 1/6] arm64: hyperv: Use SMCCC to detect hypervisor presence Roman Kisel
2025-02-12 6:54 ` Arnd Bergmann
2025-02-13 23:23 ` Roman Kisel
2025-02-14 8:05 ` Arnd Bergmann
2025-02-14 16:47 ` Roman Kisel
2025-02-24 23:22 ` Roman Kisel
2025-02-25 7:24 ` Arnd Bergmann
2025-02-25 22:25 ` Roman Kisel
2025-02-26 13:57 ` Arnd Bergmann
2025-02-19 23:13 ` Michael Kelley
2025-02-20 16:34 ` Roman Kisel
2025-02-12 1:43 ` Roman Kisel [this message]
2025-02-19 23:14 ` [PATCH hyperv-next v4 2/6] Drivers: hv: Enable VTL mode for arm64 Michael Kelley
2025-02-20 16:36 ` Roman Kisel
2025-02-12 1:43 ` [PATCH hyperv-next v4 3/6] Drivers: hv: Provide arch-neutral implementation of get_vtl() Roman Kisel
2025-02-19 23:17 ` Michael Kelley
2025-02-12 1:43 ` [PATCH hyperv-next v4 4/6] dt-bindings: microsoft,vmbus: Add GIC and DMA coherence to the example Roman Kisel
2025-02-12 6:42 ` Krzysztof Kozlowski
2025-02-12 23:57 ` Roman Kisel
2025-02-13 20:50 ` Roman Kisel
2025-02-12 1:43 ` [PATCH hyperv-next v4 5/6] Drivers: hv: vmbus: Get the IRQ number from DeviceTree Roman Kisel
2025-02-19 23:20 ` Michael Kelley
2025-02-12 1:43 ` [PATCH hyperv-next v4 6/6] PCI: hv: Get vPCI MSI IRQ domain " Roman Kisel
2025-02-12 17:42 ` Bjorn Helgaas
2025-02-18 22:32 ` Roman Kisel
2025-02-19 23:51 ` Roman Kisel
2025-02-19 23:29 ` Michael Kelley
2025-02-20 16:41 ` Roman Kisel
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