Changes in Makefile

621191d7 - Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMs

Fri, 14 Mar 2025 19:28:56 +0000

Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMsProvide a set of IOCTLs for creating and managing child partitions whenrunning as root partition on Hyper-V. The new driver is enabled viaCONFIG_MSHV_ROOT.A brief overview of the interface:MSHV_CREATE_PARTITION is the entry point, returning a file descriptorrepresenting a child partition. IOCTLs on this fd can be used to mapmemory, create VPs, etc.Creating a VP returns another file descriptor representing that VP whichin turn has another set of corresponding IOCTLs for running the VP,getting/setting state, etc.MSHV_ROOT_HVCALL is a generic "passthrough" hypercall IOCTL which can beused for a number of partition or VP hypercalls. This is for hypercallsthat do not affect any state in the kernel driver, such as getting andsetting VP registers and partition properties, translating addresses,etc. It is "passthrough" because the binary input and output for thehypercall is only interpreted by the VMM - the kernel driver doesnothing but insert the VP and partition id where necessary (which arealways in the same place), and execute the hypercall.Co-developed-by: Anirudh Rayabharam Signed-off-by: Anirudh Rayabharam Co-developed-by: Jinank Jain Signed-off-by: Jinank Jain Co-developed-by: Mukesh Rathor Signed-off-by: Mukesh Rathor Co-developed-by: Muminul Islam Signed-off-by: Muminul Islam Co-developed-by: Praveen K Paladugu Signed-off-by: Praveen K Paladugu Co-developed-by: Stanislav Kinsburskii Signed-off-by: Stanislav Kinsburskii Co-developed-by: Wei Liu Signed-off-by: Nuno Das Neves Reviewed-by: Roman Kisel Link: https://lore.kernel.org/r/1741980536-3865-11-git-send-email-nunodasneves@linux.microsoft.comSigned-off-by: Wei Liu Message-ID: <1741980536-3865-11-git-send-email-nunodasneves@linux.microsoft.com> List of files: /linux-6.15/drivers/hv/Makefile

461fbbd0 - hyperv: Add CONFIG_MSHV_ROOT to gate root partition support

Fri, 21 Feb 2025 19:56:35 +0000

hyperv: Add CONFIG_MSHV_ROOT to gate root partition supportCONFIG_MSHV_ROOT allows kernels built to run as a normal Hyper-V guestto exclude the root partition code, which is expected to growsignificantly over time.This option is a tristate so future driver code can be built as a(m)odule, allowing faster development iteration cycles.If CONFIG_MSHV_ROOT is disabled, don't compile hv_proc.c, and stubhv_root_partition() to return false unconditionally. This allows thecompiler to optimize away root partition code blocks since they willbe disabled at compile time.In the case of booting as root partition *without* CONFIG_MSHV_ROOTenabled, print a critical error (the kernel will likely crash).Signed-off-by: Nuno Das Neves Reviewed-by: Easwar Hariharan Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/1740167795-13296-4-git-send-email-nunodasneves@linux.microsoft.comSigned-off-by: Wei Liu Message-ID: <1740167795-13296-4-git-send-email-nunodasneves@linux.microsoft.com> List of files: /linux-6.15/drivers/hv/Makefile

0222eb30 - hyperv: Move arch/x86/hyperv/hv_proc.c to drivers/hv

Fri, 07 Feb 2025 19:03:22 +0000

hyperv: Move arch/x86/hyperv/hv_proc.c to drivers/hvThese helpers are not specific to x86_64 and will be needed by common code.Remove some unnecessary #includes.Reviewed-by: Michael Kelley Signed-off-by: Nuno Das Neves Link: https://lore.kernel.org/r/1738955002-20821-3-git-send-email-nunodasneves@linux.microsoft.comSigned-off-by: Wei Liu Message-ID: <1738955002-20821-3-git-send-email-nunodasneves@linux.microsoft.com> List of files: /linux-6.15/drivers/hv/Makefile

ec314f61 - Drivers: hv: Remove fcopy driver

Sat, 30 Mar 2024 08:52:02 +0000

Drivers: hv: Remove fcopy driverAs the new fcopy driver using uio is introduced, remove obsolete driverand application.Signed-off-by: Saurabh Sengar Reviewed-by: Long Li Link: https://lore.kernel.org/r/1711788723-8593-7-git-send-email-ssengar@linux.microsoft.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/hv/Makefile

a4d7e8ae - Drivers: hv: Move Hyper-V extended capability check to arch neutral code

Wed, 02 Jun 2021 21:36:44 +0000

Drivers: hv: Move Hyper-V extended capability check to arch neutral codeThe extended capability query code is currently under arch/x86, but itis architecture neutral, and is used by arch neutral code in the Hyper-Vballoon driver. Hence the balloon driver fails to build on otherarchitectures.Fix by moving the ext cap code out from arch/x86. Because it is alsocalled from built-in architecture specific code, it can't be in a module,so the Makefile treats as built-in even when CONFIG_HYPERV is "m". Alsodrivers/Makefile is tweaked because this is the first occurrence of aHyper-V file that is built-in even when CONFIG_HYPERV is "m".While here, update the hypercall status check to use the new helperfunction instead of open coding. No functional change.Signed-off-by: Michael Kelley Reviewed-by: Sunil Muthuswamy Link: https://lore.kernel.org/r/1622669804-2016-1-git-send-email-mikelley@microsoft.comSigned-off-by: Wei Liu List of files: /linux-6.15/drivers/hv/Makefile

af9ca6f9 - drivers: hv: vmbus: Introduce latency testing

Thu, 03 Oct 2019 21:01:49 +0000

drivers: hv: vmbus: Introduce latency testingIntroduce user specified latency in the packet reception pathBy exposing the test parameters as part of the debugfs channelattributes. We will control the testing state via these attributes.Signed-off-by: Branden Bonaby Reviewed-by: Michael Kelley Signed-off-by: Sasha Levin List of files: /linux-6.15/drivers/hv/Makefile

cf21be91 - hv_balloon: trace post_status

Mon, 05 Mar 2018 05:17:22 +0000

hv_balloon: trace post_statusHyper-V balloon driver makes non-trivial calculations to convert Linux'srepresentation of free/used memory to what Hyper-V host expects to see. Adda tracepoint to see what's being sent and where the data comes from.Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/hv/Makefile

c9fe0f8f - hyper-v: trace vmbus_on_msg_dpc()

Sun, 29 Oct 2017 19:21:00 +0000

hyper-v: trace vmbus_on_msg_dpc()Add tracing subsystem to Hyper-V VMBus module and add tracepointto vmbus_on_msg_dpc() which is called when we receive a message from host.Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/hv/Makefile

b2441318 - License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Wed, 01 Nov 2017 14:07:57 +0000

License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseMany source files in the tree are missing licensing information, whichmakes it harder for compliance tools to determine the correct license.By default all files without license information are under the defaultlicense of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'SPDX license identifier. The SPDX identifier is a legally bindingshorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart andPhilippe Ombredanne.How this work was done:Patches were generated and checked against linux-4.14-rc6 for a subset ofthe use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up caseswhere non-standard license headers were used, and references to licensehad to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied toa file was done in a spreadsheet of side by side results from of theoutput of two independent scanners (ScanCode & Windriver) producing SPDXtag:value files created by Philippe Ombredanne. Philippe prepared thebase worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 filesassessed. Kate Stewart did a file by file comparison of the scannerresults in the spreadsheet to determine which SPDX license identifier(s)to be applied to the file. She confirmed any determination that was notimmediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines).All documentation files were explicitly excluded.The following heuristics were used to determine which SPDX licenseidentifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time.In total, over 70 hours of logged manual review was done on thespreadsheet to determine the SPDX license identifiers to apply to thesource files by Kate, Philippe, Thomas and, in some cases, confirmationby lawyers working with the Linux Foundation.Kate also obtained a third independent scan of the 4.13 code base fromFOSSology, and compared selected files where the other two scannersdisagreed against that SPDX file, to see if there was new insights. TheWindriver scanner is based on an older version of FOSSology in part, sothey are related.Thomas did random spot checks in about 500 files from the spreadsheetsfor the uapi headers and agreed with SPDX license identifier in thefiles he inspected. For the non-uapi files Thomas did random spot checksin about 15000 files.In initial set of patches against 4.14-rc6, 3 files were found to havecopy/paste license identifier errors, and have been fixed to reflect thecorrect identifier.Additionally Philippe spent 10 hours this week doing a detailed manualinspection and review of the 12,461 patched files from the initial patchversion early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correctThis produced a worksheet with 20 files needing minor correction. Thisworksheet was then exported into 3 different .csv files for thedifferent types of files to be modified.These .csv files were then reviewed by Greg. Thomas wrote a script toparse the csv files and add the proper SPDX tag to the file, in theformat that the file expected. This script was further refined by Gregbased on the output to detect more types of files automatically and todistinguish between header and source .c files (which need differentcomment types.) Finally Greg ran the script using the .csv files togenerate the patches.Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/hv/Makefile

14b50f80 - Drivers: hv: util: introduce hv_utils_transport abstraction

Sun, 12 Apr 2015 01:07:51 +0000

Drivers: hv: util: introduce hv_utils_transport abstractionThe intention is to make KVP/VSS drivers work through misc char devices.Introduce an abstraction for kernel/userspace communication to make themigration smoother. Transport operational mode (netlink or char device)is determined by the first received message. To support driver upgradesthe switch from netlink to chardev operational mode is supported.Every hv_util daemon is supposed to register 2 callbacks:1) on_msg() to get notified when the userspace daemon sent a message;2) on_reset() to get notified when the userspace daemon drops the connection.Signed-off-by: Vitaly Kuznetsov Tested-by: Alex Ng Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/hv/Makefile

01325476 - Drivers: hv: Implement the file copy service

Sun, 16 Feb 2014 19:34:30 +0000

Drivers: hv: Implement the file copy serviceImplement the file copy service for Linux guests on Hyper-V. This permits thehost to copy a file (over VMBUS) into the guest. This facility is part of"guest integration services" supported on the Windows platform.Here is a link that provides additional details on this functionality:http://technet.microsoft.com/en-us/library/dn464282.aspxIn V1 version of the patch I have addressed comments fromOlaf Hering and Dan Carpenter In V2 version of this patch I did some minor cleanup (making some globalsstatic). In V4 version of the patch I have addressed all of Olaf'smost recent set of comments/concerns.In V5 version of the patch I had addressed Greg's most recent comments.I would like to thank Greg for suggesting that I use misc device; it hassignificantly simplified the code.In V6 version of the patch I have cleaned up error message based on Olaf'scomments. I have also rebased the patch based on the current tip.In this version of the patch, I have addressed the latest comments from Greg.Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/hv/Makefile

96dd86fa - Drivers: hv: Add a new driver to support host initiated backup

Fri, 15 Mar 2013 19:30:06 +0000

Drivers: hv: Add a new driver to support host initiated backupThis driver supports host initiated backup of the guest. On Windows guests,the host can generate application consistent backups using the Windows VSSframework. On Linux, we ensure that the backup will be file system consistent.This driver allows the host to initiate a "Freeze" operation on all the mountedfile systems in the guest. Once the mounted file systems in the guest are frozen,the host snapshots the guest's file systems. Once this is done, the guest's filesystems are "thawed".This driver has a user-level component (daemon) that invokes the appropriateoperation on all the mounted file systems in response to the requests fromthe host. The duration for which the guest is frozen is very short - a few seconds.During this interval, the diff disk is comitted.In this version of the patch I have addressed the feedback from Olaf Herring.Also, some of the connector related issues have been fixed.Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Cc: Evgeniy Polyakov Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/hv/Makefile

9aa8b50b - Drivers: hv: Add Hyper-V balloon driver

Wed, 14 Nov 2012 09:09:02 +0000

Drivers: hv: Add Hyper-V balloon driverAdd the basic balloon driver. Windows hosts dynamically manage the guestmemory allocation via a combination memory hot add and ballooning. Memoryhot add is used to grow the guest memory upto the maximum memory that can beallocatted to the guest. Ballooning is used to both shrink as well as expandup to the max memory. Supporting hot add needs additional support from thehost. We will support hot add when this support is available. For now,by setting the VM startup memory to the VM max memory, we can useballooning alone to dynamically manage memory allocation amongstcompeting guests on a given host.Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/hv/Makefile

46a97191 - Staging: hv: move hyperv code out of staging directory

Tue, 04 Oct 2011 19:29:52 +0000

Staging: hv: move hyperv code out of staging directoryAfter many years wandering the desert, it is finally time for theMicrosoft HyperV code to move out of the staging directory. Or at leastthe core hyperv bus code, and the utility driver, the rest still havesome review to get through by the various subsystem maintainers.Signed-off-by: Greg Kroah-Hartman Signed-off-by: K. Y. Srinivasan List of files: /linux-6.15/drivers/hv/Makefile