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Message-ID: <20251208064614.GA2485915@liuwe-devbox-debian-v2.local>
Date: Mon, 8 Dec 2025 06:46:14 +0000
From: Wei Liu <wei.liu@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Wei Liu <wei.liu@...nel.org>,
Linux on Hyper-V List <linux-hyperv@...r.kernel.org>,
Linux Kernel List <linux-kernel@...r.kernel.org>, kys@...rosoft.com,
haiyangz@...rosoft.com, decui@...rosoft.com, longli@...rosoft.com
Subject: [GIT PULL] Hyper-V patches for 6.19
Hi Linus,
The following changes since commit 3a8660878839faadb4f1a6dd72c3179c1df56787:
Linux 6.18-rc1 (2025-10-12 13:42:36 -0700)
are available in the Git repository at:
ssh://git@...olite.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git tags/hyperv-next-signed-20251207
for you to fetch changes up to 615a6e7d83f958e7ef3bc818e818f7c6433b4c2a:
mshv: Cleanly shutdown root partition with MSHV (2025-12-05 23:25:05 +0000)
You will see a merge conflict with the master branch. The resolution is
here.
https://lore.kernel.org/all/20251125171130.67ba74e1@canb.auug.org.au/
----------------------------------------------------------------
hyperv-next for v6.19
- Enhancements to Linux as the root partition for Microsoft
Hypervisor.
* Support a new mode called L1VH, which allows Linux to drive
the hypervisor running the Azure Host directly.
* Support for MSHV crash dump collection.
* Allow Linux's memory management subsystem to better manage guest
memory regions.
* Fix issues that prevented a clean shutdown of the whole system on
bare metal and nested configurations.
* ARM64 support for the MSHV driver.
* Various other bug fixes and cleanups.
- Add support for Confidential VMBus for Linux guest on Hyper-V.
- Secure AVIC support for Linux guests on Hyper-V.
- Add the mshv_vtl driver to allow Linux to run as the secure kernel
in a higher virtual trust level for Hyper-V.
----------------------------------------------------------------
Anirudh Rayabharam (Microsoft) (1):
mshv: Add ioctl for self targeted passthrough hvcalls
Gongwei Li (1):
Drivers: hv: use kmalloc_array() instead of kmalloc()
Jiapeng Chong (1):
x86: mshyperv: Remove duplicate asm/msr.h header
Jinank Jain (3):
mshv: Allocate vp state page for HVCALL_MAP_VP_STATE_PAGE on L1VH
mshv: Introduce new hypercall to map stats page for L1VH partitions
mshv: adjust interrupt control structure for ARM64
Kriish Sharma (1):
Drivers: hv: fix missing kernel-doc description for 'size' in request_arr_init()
Long Li (1):
MAINTAINERS: Add Long Li as a Hyper-V maintainer
Magnus Kulke (1):
mshv: Allow mappings that overlap in uaddr
Marco Crivellari (1):
mshv: add WQ_PERCPU to alloc_workqueue users
Mukesh Rathor (6):
x86/hyperv: Rename guest crash shutdown function
hyperv: Add two new hypercall numbers to guest ABI public header
hyperv: Add definitions for hypervisor crash dump support
x86/hyperv: Add trampoline asm code to transition from hypervisor
x86/hyperv: Implement hypervisor RAM collection into vmcore
x86/hyperv: Enable build of hypervisor crashdump collection files
Muminul Islam (1):
mshv: Extend create partition ioctl to support cpu features
Naman Jain (3):
static_call: allow using STATIC_CALL_TRAMP_STR() from assembly
Drivers: hv: Export some symbols for mshv_vtl
Drivers: hv: Introduce mshv_vtl driver
Nuno Das Neves (4):
mshv: Fix VpRootDispatchThreadBlocked value
mshv: Fix deposit memory in MSHV_ROOT_HVCALL
mshv: Only map vp->vp_stats_pages if on root scheduler
mshv: Fix create memory region overlap check
Praveen K Paladugu (3):
mshv: Add definitions for MSHV sleep state configuration
mshv: Use reboot notifier to configure sleep state
mshv: Cleanly shutdown root partition with MSHV
Purna Pavan Chandra Aekkaladevi (2):
mshv: Add the HVCALL_GET_PARTITION_PROPERTY_EX hypercall
mshv: Get the vmm capabilities offered by the hypervisor
Rahul Kumar (1):
Drivers: hv: Use kmalloc_array() instead of kmalloc()
Roman Kisel (17):
Documentation: hyperv: Confidential VMBus
Drivers: hv: VMBus protocol version 6.0
arch/x86: mshyperv: Discover Confidential VMBus availability
arch: hyperv: Get/set SynIC synth.registers via paravisor
arch/x86: mshyperv: Trap on access for some synthetic MSRs
Drivers: hv: Rename fields for SynIC message and event pages
Drivers: hv: Allocate the paravisor SynIC pages when required
Drivers: hv: Post messages through the confidential VMBus if available
Drivers: hv: remove stale comment
Drivers: hv: Check message and event pages for non-NULL before iounmap()
Drivers: hv: Rename the SynIC enable and disable routines
Drivers: hv: Functions for setting up and tearing down the paravisor SynIC
Drivers: hv: Allocate encrypted buffers when requested
Drivers: hv: Free msginfo when the buffer fails to decrypt
Drivers: hv: Support confidential VMBus channels
Drivers: hv: Set the default VMBus version to 6.0
Drivers: hv: Support establishing the confidential VMBus connection
Stanislav Kinsburskii (7):
Drivers: hv: Resolve ambiguity in hypervisor version log
mshv: Refactor and rename memory region handling functions
mshv: Centralize guest memory region destruction
mshv: Move region management to mshv_regions.c
mshv: Fix huge page handling in memory region traversal
mshv: Add refcount and locking to mem regions
mshv: Add support for movable memory regions
Tianyu Lan (4):
x86/hyperv: Don't use hv apic driver when Secure AVIC is available
drivers: hv: Allow vmbus message synic interrupt injected from Hyper-V
x86/hyperv: Don't use auto-eoi when Secure AVIC is available
x86/hyperv: Allow Hyper-V to inject STIMER0 interrupts
Documentation/virt/hyperv/coco.rst | 139 ++-
MAINTAINERS | 3 +
arch/x86/hyperv/Makefile | 16 +-
arch/x86/hyperv/hv_apic.c | 8 +
arch/x86/hyperv/hv_crash.c | 642 ++++++++++++++
arch/x86/hyperv/hv_init.c | 9 +
arch/x86/hyperv/hv_trampoline.S | 101 +++
arch/x86/hyperv/hv_vtl.c | 30 +
arch/x86/hyperv/mshv-asm-offsets.c | 37 +
arch/x86/hyperv/mshv_vtl_asm.S | 116 +++
arch/x86/include/asm/mshyperv.h | 45 +
arch/x86/kernel/cpu/mshyperv.c | 88 +-
drivers/hv/Kconfig | 29 +-
drivers/hv/Makefile | 9 +-
drivers/hv/channel.c | 75 +-
drivers/hv/channel_mgmt.c | 27 +-
drivers/hv/connection.c | 6 +-
drivers/hv/hv.c | 377 ++++++---
drivers/hv/hv_common.c | 27 +-
drivers/hv/hv_util.c | 2 +-
drivers/hv/hyperv_vmbus.h | 76 +-
drivers/hv/mshv_common.c | 99 +++
drivers/hv/mshv_eventfd.c | 8 +-
drivers/hv/mshv_irq.c | 4 +
drivers/hv/mshv_regions.c | 555 ++++++++++++
drivers/hv/mshv_root.h | 57 +-
drivers/hv/mshv_root_hv_call.c | 196 ++++-
drivers/hv/mshv_root_main.c | 749 +++++++++--------
drivers/hv/mshv_synic.c | 6 +-
drivers/hv/mshv_vtl.h | 25 +
drivers/hv/mshv_vtl_main.c | 1392 +++++++++++++++++++++++++++++++
drivers/hv/ring_buffer.c | 5 +-
drivers/hv/vmbus_drv.c | 188 +++--
include/asm-generic/mshyperv.h | 63 +-
include/hyperv/hvgdk_mini.h | 115 ++-
include/hyperv/hvhdk.h | 46 +
include/hyperv/hvhdk_mini.h | 128 +++
include/linux/compiler_types.h | 8 +-
include/linux/hyperv.h | 69 +-
include/linux/static_call_types.h | 4 +
include/uapi/linux/mshv.h | 116 ++-
tools/include/linux/static_call_types.h | 4 +
42 files changed, 5005 insertions(+), 694 deletions(-)
create mode 100644 arch/x86/hyperv/hv_crash.c
create mode 100644 arch/x86/hyperv/hv_trampoline.S
create mode 100644 arch/x86/hyperv/mshv-asm-offsets.c
create mode 100644 arch/x86/hyperv/mshv_vtl_asm.S
create mode 100644 drivers/hv/mshv_regions.c
create mode 100644 drivers/hv/mshv_vtl.h
create mode 100644 drivers/hv/mshv_vtl_main.c
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