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, joey.gouly@arm.com,
krzk+dt@kernel.org, kw@linux.com, kys@microsoft.com,
lenb@kernel.org, lpieralisi@kernel.org,
manivannan.sadhasivam@linaro.org, mark.rutland@arm.com,
maz@kernel.org, mingo@redhat.com, oliver.upton@linux.dev,
rafael@kernel.org, robh@kernel.org, ssengar@linux.microsoft.com,
sudeep.holla@arm.com, suzuki.poulose@arm.com, tglx@linutronix.de,
wei.liu@kernel.org, will@kernel.org, yuzenghui@huawei.com,
devicetree@vger.kernel.org, kvmarm@lists.linux.dev,
linux-acpi@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: apais@microsoft.com, benhill@microsoft.com,
bperkins@microsoft.com, sunilmut@microsoft.com
Subject: [PATCH hyperv-next v5 06/11] arm64, x86: hyperv: Report the VTL the system boots in
Date: Fri, 7 Mar 2025 14:02:58 -0800 [thread overview]
Message-ID: <20250307220304.247725-7-romank@linux.microsoft.com> (raw)
In-Reply-To: <20250307220304.247725-1-romank@linux.microsoft.com>
The hyperv guest code might run in various Virtual Trust Levels.
Report the level when the kernel boots in the non-default (0)
one.
Signed-off-by: Roman Kisel <romank@linux.microsoft.com>
---
arch/arm64/hyperv/mshyperv.c | 2 ++
arch/x86/hyperv/hv_vtl.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/hyperv/mshyperv.c b/arch/arm64/hyperv/mshyperv.c
index a7db03f5413d..3bc16dbee758 100644
--- a/arch/arm64/hyperv/mshyperv.c
+++ b/arch/arm64/hyperv/mshyperv.c
@@ -108,6 +108,8 @@ static int __init hyperv_init(void)
if (ms_hyperv.priv_high & HV_ACCESS_PARTITION_ID)
hv_get_partition_id();
ms_hyperv.vtl = get_vtl();
+ if (ms_hyperv.vtl > 0) /* non default VTL */
+ pr_info("Linux runs in Hyper-V Virtual Trust Level %d\n", ms_hyperv.vtl);
ms_hyperv_late_init();
diff --git a/arch/x86/hyperv/hv_vtl.c b/arch/x86/hyperv/hv_vtl.c
index 4e1b1e3b5658..c21bee7e8ff3 100644
--- a/arch/x86/hyperv/hv_vtl.c
+++ b/arch/x86/hyperv/hv_vtl.c
@@ -24,7 +24,7 @@ static bool __init hv_vtl_msi_ext_dest_id(void)
void __init hv_vtl_init_platform(void)
{
- pr_info("Linux runs in Hyper-V Virtual Trust Level\n");
+ pr_info("Linux runs in Hyper-V Virtual Trust Level %d\n", ms_hyperv.vtl);
x86_platform.realmode_reserve = x86_init_noop;
x86_platform.realmode_init = x86_init_noop;
--
2.43.0
next prev parent reply other threads:[~2025-03-07 22:03 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-07 22:02 [PATCH hyperv-next v5 00/11] arm64: hyperv: Support Virtual Trust Level Boot Roman Kisel
2025-03-07 22:02 ` [PATCH hyperv-next v5 01/11] arm64: kvm, smccc: Introduce and use API for detectting hypervisor presence Roman Kisel
2025-03-08 21:08 ` Arnd Bergmann
2025-03-10 21:16 ` Michael Kelley
2025-03-10 21:54 ` Roman Kisel
2025-03-07 22:02 ` [PATCH hyperv-next v5 02/11] arm64: hyperv: Use SMCCC to detect " Roman Kisel
2025-03-10 21:17 ` Michael Kelley
2025-03-07 22:02 ` [PATCH hyperv-next v5 03/11] Drivers: hv: Enable VTL mode for arm64 Roman Kisel
2025-03-08 21:05 ` Arnd Bergmann
2025-03-10 17:35 ` Roman Kisel
2025-03-10 21:01 ` Michael Kelley
2025-03-10 21:20 ` Arnd Bergmann
2025-03-10 22:18 ` Michael Kelley
2025-03-12 18:33 ` Roman Kisel
2025-03-12 20:25 ` Arnd Bergmann
2025-03-12 21:21 ` Roman Kisel
2025-03-13 5:10 ` Michael Kelley
2025-03-12 20:31 ` Wei Liu
2025-03-12 21:30 ` Roman Kisel
2025-03-07 22:02 ` [PATCH hyperv-next v5 04/11] Drivers: hv: Provide arch-neutral implementation of get_vtl() Roman Kisel
2025-03-10 13:44 ` Tianyu Lan
2025-03-07 22:02 ` [PATCH hyperv-next v5 05/11] arm64: hyperv: Initialize the Virtual Trust Level field Roman Kisel
2025-03-10 23:07 ` Michael Kelley
2025-03-07 22:02 ` Roman Kisel [this message]
2025-03-10 0:31 ` [PATCH hyperv-next v5 06/11] arm64, x86: hyperv: Report the VTL the system boots in Wei Liu
2025-03-10 16:42 ` Roman Kisel
2025-03-10 16:53 ` Wei Liu
2025-03-10 17:20 ` Roman Kisel
2025-03-07 22:02 ` [PATCH hyperv-next v5 07/11] dt-bindings: microsoft,vmbus: Add interrupts and DMA coherence Roman Kisel
2025-03-10 9:28 ` Krzysztof Kozlowski
2025-03-10 17:05 ` Roman Kisel
2025-03-10 17:40 ` Krzysztof Kozlowski
2025-03-10 18:07 ` Roman Kisel
2025-03-10 21:17 ` Krzysztof Kozlowski
2025-03-10 21:51 ` Roman Kisel
2025-03-07 22:03 ` [PATCH hyperv-next v5 08/11] Drivers: hv: vmbus: Get the IRQ number from DeviceTree Roman Kisel
2025-03-08 21:11 ` Arnd Bergmann
2025-03-10 17:36 ` Roman Kisel
2025-03-10 23:09 ` Michael Kelley
2025-03-13 18:44 ` Rob Herring
2025-03-13 18:46 ` Roman Kisel
2025-03-07 22:03 ` [PATCH hyperv-next v5 09/11] Drivers: hv: vmbus: Introduce hv_get_vmbus_root_device() Roman Kisel
2025-03-10 13:41 ` Tianyu Lan
2025-03-10 17:09 ` Roman Kisel
2025-03-10 23:12 ` Michael Kelley
2025-03-07 22:03 ` [PATCH hyperv-next v5 10/11] ACPI: irq: Introduce acpi_get_gsi_dispatcher() Roman Kisel
2025-03-10 23:26 ` Michael Kelley
2025-03-07 22:03 ` [PATCH hyperv-next v5 11/11] PCI: hv: Get vPCI MSI IRQ domain from DeviceTree Roman Kisel
2025-03-10 16:41 ` Bjorn Helgaas
2025-03-10 17:15 ` Roman Kisel
2025-03-10 23:42 ` Michael Kelley
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