[PATCH hyperv-next v5 06/11] arm64, x86: hyperv: Report the VTL the system boots in
From: Roman Kisel <hidden>
Date: 2025-03-07 22:03:08
Also in:
kvmarm, linux-acpi, linux-arch, linux-arm-kernel, linux-devicetree, linux-pci, lkml
Subsystem:
arm64 port (aarch64 architecture), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
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 <redacted> --- 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