From: Thara Gopinath <tgopinath@linux.microsoft.com>
To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
decui@microsoft.com, tglx@kernel.org, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com,
ardb@kernel.org, ilias.apalodimas@linaro.org
Cc: James.Bottomley@HansenPartnership.com,
"longli@microsoft.com--cc=tzimmermann"@suse.de,
javierm@redhat.com, lszubowi@redhat.com,
francescopompo2@gmail.com, tgopinath@microsoft.com,
x86@kernel.org, linux-hyperv@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
Thara Gopinath <tgopinath@linux.microsoft.com>
Subject: [RFC PATCH 01/12] drivers: hv: Add HYPERV_VSM kconfig option
Date: Tue, 1 Sep 2026 09:55:15 -0700 [thread overview]
Message-ID: <20260901165647.3160413-2-tgopinath@linux.microsoft.com> (raw)
In-Reply-To: <20260901165647.3160413-1-tgopinath@linux.microsoft.com>
Introduce CONFIG_HYPERV_VSM, the top-level switch that gates
VTL0-side support for Microsoft Hyper-V's Virtual Secure Mode (VSM).
Enabling it lets the VTL0 kernel load a small secure kernel into
VTL1 and stand up the VTL0<->VTL1 interfaces needed to request
VSM services.
Depends on HYPERV and on X86_64 which is the only architecture currently
implemented.
Signed-off-by: Thara Gopinath <tgopinath@linux.microsoft.com>
---
drivers/hv/Kconfig | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
index aa11bcefddf2c..a325fc61be604 100644
--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -40,6 +40,15 @@ config HYPERV_VTL_MODE
If unsure, say N
+config HYPERV_VSM
+ bool "Microsoft Hyper-V VSM driver"
+ depends on HYPERV && X86_64
+ help
+ Select this option to enable Hyper-V Virtual Secure Mode.
+ Enabling this option will load a secure kernel in VTL1 and
+ establish an interface between VTL0 and VTL1 to request for
+ VSM services.
+
config HYPERV_TIMER
def_bool HYPERV && X86
--
2.34.1
next prev parent reply other threads:[~2026-09-01 16:57 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-01 16:55 [RFC PATCH 00/12] Introduce LVBS support for Hyper-V guests Thara Gopinath
2026-09-01 16:55 ` Thara Gopinath [this message]
2026-09-01 16:55 ` [RFC PATCH 02/12] drivers: hv: hv_common: Allocate Hyper-V output arg page when VSM is enabled Thara Gopinath
2026-09-01 17:12 ` sashiko-bot
2026-09-01 22:56 ` Wei Liu
2026-09-01 16:55 ` [RFC PATCH 03/12] drivers: hv: Reserve memory for VSM secure kernel during early boot Thara Gopinath
2026-09-01 17:10 ` sashiko-bot
2026-09-02 0:59 ` Wei Liu
2026-09-02 13:38 ` Thara Gopinath
2026-09-01 16:55 ` [RFC PATCH 04/12] firmware: efi: libstub: x86-stub: Enable VSM awareness in efi os indications variable Thara Gopinath
2026-09-01 17:09 ` sashiko-bot
2026-09-02 1:09 ` Wei Liu
2026-09-02 14:23 ` Thara Gopinath
2026-09-01 16:55 ` [RFC PATCH 05/12] include: hyperv: hvgdk_mini.h: Add VTL-specific structures and bits Thara Gopinath
2026-09-01 16:55 ` [RFC PATCH 06/12] drivers: hv: Add VSM boot driver and enable VTL1 at the partition level Thara Gopinath
2026-09-01 17:24 ` sashiko-bot
2026-09-02 1:16 ` Wei Liu
2026-09-02 14:28 ` Thara Gopinath
2026-09-02 4:43 ` Wei Liu
2026-09-04 13:23 ` Thara Gopinath
2026-09-01 16:55 ` [RFC PATCH 07/12] drivers: hv: hv_vsm_boot: load secure kernel image from firmware Thara Gopinath
2026-09-01 17:20 ` sashiko-bot
2026-09-02 4:37 ` Wei Liu
2026-09-02 16:22 ` Thara Gopinath
2026-09-02 22:58 ` Wei Liu
2026-09-01 16:55 ` [RFC PATCH 08/12] arch: x86: hyperv: Build initial vCPU context for VTL1 secure kernel Thara Gopinath
2026-09-01 17:25 ` sashiko-bot
2026-09-01 16:55 ` [RFC PATCH 09/12] drivers: hv: hv_vsm_boot: Enable VTL1 on the boot processor Thara Gopinath
2026-09-01 17:36 ` sashiko-bot
2026-09-01 16:55 ` [RFC PATCH 10/12] arch: x86: hyperv: hv_vtl_vsm: Introduce vtlcall Thara Gopinath
2026-09-01 16:55 ` [RFC PATCH 11/12] drivers: hv: hv_vsm_boot: Boot primary processor in VTL1 Thara Gopinath
2026-09-01 17:35 ` sashiko-bot
2026-09-01 16:55 ` [RFC PATCH 12/12] drivers: hv: hv_vsm_boot: Boot secondary processors " Thara Gopinath
2026-09-01 17:44 ` sashiko-bot
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