kernel/linux.git/Documentation/virt/hyperv, branch v6.19.11Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.19.112025-11-15T06:18:14+00:00Documentation: hyperv: Confidential VMBus2025-11-15T06:18:14+00:00Roman Kiselromank@linux.microsoft.com2025-10-08T23:34:03+00:00urn:sha1:92c7053b44b312e1cda765507f45fc170dee1b41
Define what the confidential VMBus is and describe what advantages
it offers on the capable hardware.
Signed-off-by: Roman Kisel <romank@linux.microsoft.com>
Reviewed-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Documentation: hyperv: Update VMBus doc with new features and info2025-05-23T16:30:56+00:00Michael Kelleymhklinux@outlook.com2025-05-20T04:44:35+00:00urn:sha1:f77276d1c9597ade06f3facbceb51bd1abf1bd5c
Starting in the 6.15 kernel, VMBus interrupts are automatically
assigned away from a CPU that is being taken offline. Add documentation
describing this case.
Also add details of Hyper-V behavior when the primary channel of
a VMBus device is closed as the result of unbinding the device's
driver. This behavior has not changed, but it was not previously
documented.
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/20250520044435.7734-1-mhklinux@outlook.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20250520044435.7734-1-mhklinux@outlook.com>
Documentation: hyperv: Add overview of guest VM hibernation2025-01-13T19:17:59+00:00Michael Kelleymhklinux@outlook.com2025-01-13T14:56:45+00:00urn:sha1:2e03358be78b65d28b66e17aca9e0c8700b0df78
Add documentation on how hibernation works in a guest VM on Hyper-V.
Describe how VMBus devices and the VMBus itself are hibernated and
resumed, along with various limitations.
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/20250113145645.1320942-1-mhklinux@outlook.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20250113145645.1320942-1-mhklinux@outlook.com>
Documentation: hyperv: Add overview of Confidential Computing VM support2024-06-24T07:07:19+00:00Michael Kelleymhklinux@outlook.com2024-06-18T16:50:59+00:00urn:sha1:3b85a2eacd3d886f4d4133a83cdfc2f3b48f06c0
Add documentation topic for Confidential Computing (CoCo) VM support
in Linux guests on Hyper-V.
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240618165059.10174-1-mhklinux@outlook.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240618165059.10174-1-mhklinux@outlook.com>
Documentation: hyperv: Improve synic and interrupt handling description2024-05-28T05:28:42+00:00Michael Kelleymhklinux@outlook.com2024-05-11T13:38:18+00:00urn:sha1:a0b134032e6c5552635c7142ad7f181eba2f3256
Current documentation does not describe how Linux handles the synthetic
interrupt controller (synic) that Hyper-V provides to guest VMs, nor how
VMBus or timer interrupts are handled. Add text describing the synic and
reorganize existing text to make this more clear.
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20240511133818.19649-2-mhklinux@outlook.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240511133818.19649-2-mhklinux@outlook.com>
Documentation: hyperv: Update spelling and fix typo2024-05-28T05:28:42+00:00Michael Kelleymhklinux@outlook.com2024-05-11T13:38:17+00:00urn:sha1:4c5a65fd10895708952106652b2ac2ca3b7bb9d9
Update spelling from "VMbus" to "VMBus" to match Hyper-V product
documentation. Also correct typo: "SNP-SEV" should be "SEV-SNP".
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20240511133818.19649-1-mhklinux@outlook.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240511133818.19649-1-mhklinux@outlook.com>
Documentation: hyperv: Add overview of PCI pass-thru device support2024-03-01T08:29:49+00:00Michael Kelleymhklinux@outlook.com2024-02-22T20:07:10+00:00urn:sha1:04ed680e76b0d320612601cef46cb7092f860b31
Add documentation topic for PCI pass-thru devices in Linux guests
on Hyper-V and for the associated PCI controller driver (pci-hyperv.c).
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240222200710.305259-1-mhklinux@outlook.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240222200710.305259-1-mhklinux@outlook.com>
Documentation: Fix typos2023-08-18T17:29:03+00:00Bjorn Helgaasbhelgaas@google.com2023-08-14T21:28:22+00:00urn:sha1:d56b699d76d1b352f7a3d3a0a3e91c79b8612d94
Fix typos in Documentation.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20230814212822.193684-4-helgaas@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Documentation: hyperv: Add overview of clocks and timers2022-07-13T20:04:48+00:00Michael Kelleymikelley@microsoft.com2022-07-11T17:48:24+00:00urn:sha1:ab3e69fc4d693bb1cc6b3d5afcfabd88a17da9d4
Add documentation topic for clocks and timers when running as a
guest on Hyper-V.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1657561704-12631-4-git-send-email-mikelley@microsoft.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Documentation: hyperv: Add overview of VMbus2022-07-13T20:04:48+00:00Michael Kelleymikelley@microsoft.com2022-07-11T17:48:23+00:00urn:sha1:ac1129e79e90a1dae495fdb2f4659bd1be90abb1
Add documentation topic for using VMbus when running as a guest
on Hyper-V.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1657561704-12631-3-git-send-email-mikelley@microsoft.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>