kernel/linux.git/include/hyperv, branch v6.18.36

mshv: add a missing padding field

2026-06-19T11:44:03+00:00

commit 48fcc895403cc97aa6c776cb65e6aa11290c0b44 upstream. That was missed when importing the header. Reported-by: Doru Blânzeanu Reported-by: Magnus Kulke Fixes: e68bda71a2384 ("hyperv: Add new Hyper-V headers in include/hyperv") Cc: stable@kernel.org Reviewed-by: Easwar Hariharan Signed-off-by: Wei Liu Signed-off-by: Greg Kroah-Hartman

hyperv: Clean up and fix the guest ID comment in hvgdk.h

2026-06-19T11:43:56+00:00

[ Upstream commit 83eb00f31eb1b10735d48e469df72cc2b0e06f6d ] Change the "64 bit" to "64-bit", and the "Os" to "OS". Remove the obsolete paragraph since the guideline has been published in the Hypervisor Top Level Functional Specification for many years. The "OS Type" is 0x1 for Linux, not 0x100. No functional change. Fixes: 83ba0c4f3f31 ("Drivers: hv: Cleanup the guest ID computation") Signed-off-by: Dexuan Cui Reviewed-by: Hamza Mahfooz Signed-off-by: Wei Liu Signed-off-by: Sasha Levin

Drivers: hv: VMBus protocol version 6.0

2026-06-19T11:43:55+00:00

[ Upstream commit 6802d8af47d1dccd9a74a1f708fb9129244ef843 ] The confidential VMBus is supported starting from the protocol version 6.0 onwards. Provide the required definitions. No functional changes. Signed-off-by: Roman Kisel Reviewed-by: Alok Tiwari Reviewed-by: Michael Kelley Signed-off-by: Wei Liu Stable-dep-of: c5c3ef8d49e1 ("Drivers: hv: vmbus: Provide option to skip VMBus unload on panic") Signed-off-by: Sasha Levin

hyperv: Remove the spurious null directive line

2025-10-02T21:21:24+00:00

The file contains a line that consists of the lone # symbol followed by a newline. While that is a valid syntax as defined by the C99+ grammar (6.10.7 "Null directive"), it serves no apparent purpose in this case. Remove the null preprocessor directive. No functional changes. Fixes: e68bda71a238 ("hyperv: Add new Hyper-V headers in include/hyperv") Signed-off-by: Roman Kisel Reviewed-by: Easwar Hariharan Signed-off-by: Wei Liu

hyperv: Add missing field to hv_output_map_device_interrupt

2025-09-08T22:10:35+00:00

This field is unused, but the correct structure size is needed when computing the amount of space for the output argument to reside, so that it does not cross a page boundary. Signed-off-by: Nuno Das Neves Reviewed-by: Michael Kelley Signed-off-by: Wei Liu

Merge tag 'hyperv-next-signed-20250602' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

2025-06-03T15:39:20+00:00

Pull hyperv updates from Wei Liu: - Support for Virtual Trust Level (VTL) on arm64 (Roman Kisel) - Fixes for Hyper-V UIO driver (Long Li) - Fixes for Hyper-V PCI driver (Michael Kelley) - Select CONFIG_SYSFB for Hyper-V guests (Michael Kelley) - Documentation updates for Hyper-V VMBus (Michael Kelley) - Enhance logging for hv_kvp_daemon (Shradha Gupta) * tag 'hyperv-next-signed-20250602' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (23 commits) Drivers: hv: Always select CONFIG_SYSFB for Hyper-V guests Drivers: hv: vmbus: Add comments about races with "channels" sysfs dir Documentation: hyperv: Update VMBus doc with new features and info PCI: hv: Remove unnecessary flex array in struct pci_packet Drivers: hv: Remove hv_alloc/free_* helpers Drivers: hv: Use kzalloc for panic page allocation uio_hv_generic: Align ring size to system page uio_hv_generic: Use correct size for interrupt and monitor pages Drivers: hv: Allocate interrupt and monitor pages aligned to system page boundary arch/x86: Provide the CPU number in the wakeup AP callback x86/hyperv: Fix APIC ID and VP index confusion in hv_snp_boot_ap() PCI: hv: Get vPCI MSI IRQ domain from DeviceTree ACPI: irq: Introduce acpi_get_gsi_dispatcher() Drivers: hv: vmbus: Introduce hv_get_vmbus_root_device() Drivers: hv: vmbus: Get the IRQ number from DeviceTree dt-bindings: microsoft,vmbus: Add interrupt and DMA coherence properties arm64, x86: hyperv: Report the VTL the system boots in arm64: hyperv: Initialize the Virtual Trust Level field Drivers: hv: Provide arch-neutral implementation of get_vtl() Drivers: hv: Enable VTL mode for arm64 ...

x86/hyperv: Fix APIC ID and VP index confusion in hv_snp_boot_ap()

2025-05-23T16:30:56+00:00

To start an application processor in SNP-isolated guest, a hypercall is used that takes a virtual processor index. The hv_snp_boot_ap() function uses that START_VP hypercall but passes as VP index to it what it receives as a wakeup_secondary_cpu_64 callback: the APIC ID. As those two aren't generally interchangeable, that may lead to hung APs if the VP index and the APIC ID don't match up. Update the parameter names to avoid confusion as to what the parameter is. Use the APIC ID to the VP index conversion to provide the correct input to the hypercall. Cc: stable@vger.kernel.org Fixes: 44676bb9d566 ("x86/hyperv: Add smp support for SEV-SNP guest") Signed-off-by: Roman Kisel Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/20250507182227.7421-2-romank@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <20250507182227.7421-2-romank@linux.microsoft.com>

Drivers: hv: Provide arch-neutral implementation of get_vtl()

2025-05-23T16:30:55+00:00

To run in the VTL mode, Hyper-V drivers have to know what VTL the system boots in, and the arm64/hyperv code does not have the means to compute that. Refactor the code to hoist the function that detects VTL, make it arch-neutral to be able to employ it to get the VTL on arm64. Signed-off-by: Roman Kisel Reviewed-by: Michael Kelley Reviewed-by: Tianyu Lan Link: https://lore.kernel.org/r/20250428210742.435282-5-romank@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <20250428210742.435282-5-romank@linux.microsoft.com>

x86/msr: Rename 'wrmsrl()' to 'wrmsrq()'

2025-04-10T09:58:33+00:00

Suggested-by: "H. Peter Anvin" Signed-off-by: Ingo Molnar Acked-by: Peter Zijlstra (Intel) Cc: Juergen Gross Cc: Dave Hansen Cc: Xin Li Cc: Linus Torvalds

x86/msr: Rename 'rdmsrl()' to 'rdmsrq()'

2025-04-10T09:58:27+00:00

Suggested-by: "H. Peter Anvin" Signed-off-by: Ingo Molnar Acked-by: Peter Zijlstra (Intel) Cc: Juergen Gross Cc: Dave Hansen Cc: Xin Li Cc: Linus Torvalds