Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v6.19.11 2025-12-05T23:20:20+00:00 2025-12-05T23:20:20+00:00 Stanislav Kinsburskii skinsburskii@linux.microsoft.com 2025-12-03T21:40:50+00:00 urn:sha1:e950c30a1051d27fd6dd9a48c53ffbc41ee773f2 Refactor memory region management functions from mshv_root_main.c into mshv_regions.c for better modularity and code organization. Adjust function calls and headers to use the new implementation. Improve maintainability and separation of concerns in the mshv_root module. Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> 2025-12-05T23:16:26+00:00 Naman Jain namjain@linux.microsoft.com 2025-11-13T04:41:49+00:00 urn:sha1:7bfe3b8ea6e30437e01fcb8e4f56ef6e4d986d0f Provide an interface for Virtual Machine Monitor like OpenVMM and its use as OpenHCL paravisor to control VTL0 (Virtual trust Level). Expose devices and support IOCTLs for features like VTL creation, VTL0 memory management, context switch, making hypercalls, mapping VTL0 address space to VTL2 userspace, getting new VMBus messages and channel events in VTL2 etc. Co-developed-by: Roman Kisel <romank@linux.microsoft.com> Signed-off-by: Roman Kisel <romank@linux.microsoft.com> Co-developed-by: Saurabh Sengar <ssengar@linux.microsoft.com> Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Signed-off-by: Naman Jain <namjain@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> 2025-10-01T00:00:45+00:00 Mukesh Rathor mrathor@linux.microsoft.com 2025-09-15T23:46:04+00:00 urn:sha1:e3ec97c3abaf2fb68cc755cae3229288696b9f3d With CONFIG_HYPERV and CONFIG_HYPERV_VMBUS separated, change CONFIG_HYPERV to bool from tristate. CONFIG_HYPERV now becomes the core Hyper-V hypervisor support, such as hypercalls, clocks/timers, Confidential Computing setup, PCI passthru, etc. that doesn't involve VMBus or VMBus devices. Signed-off-by: Mukesh Rathor <mrathor@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> 2025-10-01T00:00:42+00:00 Mukesh Rathor mrathor@linux.microsoft.com 2025-09-15T23:46:03+00:00 urn:sha1:94b04355e6397a0a70b69c2571fa5c7d9990b835 At present VMBus driver is hinged off of CONFIG_HYPERV which entails lot of builtin code and encompasses too much. It's not always clear what depends on builtin hv code and what depends on VMBus. Setting CONFIG_HYPERV as a module and fudging the Makefile to switch to builtin adds even more confusion. VMBus is an independent module and should have its own config option. Also, there are scenarios like baremetal dom0/root where support is built in with CONFIG_HYPERV but without VMBus. Lastly, there are more features coming down that use CONFIG_HYPERV and add more dependencies on it. So, create a fine grained HYPERV_VMBUS option and update Kconfigs for dependency on VMBus. Signed-off-by: Mukesh Rathor <mrathor@linux.microsoft.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> # drivers/pci Signed-off-by: Wei Liu <wei.liu@kernel.org> 2025-03-21T18:24:22+00:00 Nuno Das Neves nunodasneves@linux.microsoft.com 2025-03-14T19:28:56+00:00 urn:sha1:621191d709b14882270dfd8ea5d7d6cdfebe2c35 Provide a set of IOCTLs for creating and managing child partitions when running as root partition on Hyper-V. The new driver is enabled via CONFIG_MSHV_ROOT. A brief overview of the interface: MSHV_CREATE_PARTITION is the entry point, returning a file descriptor representing a child partition. IOCTLs on this fd can be used to map memory, create VPs, etc. Creating a VP returns another file descriptor representing that VP which in 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 be used for a number of partition or VP hypercalls. This is for hypercalls that do not affect any state in the kernel driver, such as getting and setting VP registers and partition properties, translating addresses, etc. It is "passthrough" because the binary input and output for the hypercall is only interpreted by the VMM - the kernel driver does nothing but insert the VP and partition id where necessary (which are always in the same place), and execute the hypercall. Co-developed-by: Anirudh Rayabharam <anrayabh@linux.microsoft.com> Signed-off-by: Anirudh Rayabharam <anrayabh@linux.microsoft.com> Co-developed-by: Jinank Jain <jinankjain@microsoft.com> Signed-off-by: Jinank Jain <jinankjain@microsoft.com> Co-developed-by: Mukesh Rathor <mrathor@linux.microsoft.com> Signed-off-by: Mukesh Rathor <mrathor@linux.microsoft.com> Co-developed-by: Muminul Islam <muislam@microsoft.com> Signed-off-by: Muminul Islam <muislam@microsoft.com> Co-developed-by: Praveen K Paladugu <prapal@linux.microsoft.com> Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com> Co-developed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Co-developed-by: Wei Liu <wei.liu@kernel.org> Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Roman Kisel <romank@linux.microsoft.com> Link: https://lore.kernel.org/r/1741980536-3865-11-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1741980536-3865-11-git-send-email-nunodasneves@linux.microsoft.com> 2025-03-20T21:22:58+00:00 Nuno Das Neves nunodasneves@linux.microsoft.com 2025-02-21T19:56:35+00:00 urn:sha1:461fbbd036b11d755b50e2ef7c165859a0f908d5 CONFIG_MSHV_ROOT allows kernels built to run as a normal Hyper-V guest to exclude the root partition code, which is expected to grow significantly 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 stub hv_root_partition() to return false unconditionally. This allows the compiler to optimize away root partition code blocks since they will be disabled at compile time. In the case of booting as root partition *without* CONFIG_MSHV_ROOT enabled, print a critical error (the kernel will likely crash). Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Link: https://lore.kernel.org/r/1740167795-13296-4-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1740167795-13296-4-git-send-email-nunodasneves@linux.microsoft.com> 2025-02-13T23:38:47+00:00 Nuno Das Neves nunodasneves@linux.microsoft.com 2025-02-07T19:03:22+00:00 urn:sha1:0222eb30a3572cc9c4e2f0a3bb37f8f71089f2b6 These helpers are not specific to x86_64 and will be needed by common code. Remove some unnecessary #includes. Reviewed-by: Michael Kelley <mhklinux@outlook.com> Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Link: https://lore.kernel.org/r/1738955002-20821-3-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1738955002-20821-3-git-send-email-nunodasneves@linux.microsoft.com> 2024-04-11T12:55:53+00:00 Saurabh Sengar ssengar@linux.microsoft.com 2024-03-30T08:52:02+00:00 urn:sha1:ec314f61e4fc2d3dd6ea78aa18a5ac276eb1a8e3 As the new fcopy driver using uio is introduced, remove obsolete driver and application. Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Long Li <longli@microsoft.com> Link: https://lore.kernel.org/r/1711788723-8593-7-git-send-email-ssengar@linux.microsoft.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2021-06-05T10:22:34+00:00 Michael Kelley mikelley@microsoft.com 2021-06-02T21:36:44+00:00 urn:sha1:a4d7e8ae4a541557d7a2c815835b786c18c3613c The extended capability query code is currently under arch/x86, but it is architecture neutral, and is used by arch neutral code in the Hyper-V balloon driver. Hence the balloon driver fails to build on other architectures. Fix by moving the ext cap code out from arch/x86. Because it is also called 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". Also drivers/Makefile is tweaked because this is the first occurrence of a Hyper-V file that is built-in even when CONFIG_HYPERV is "m". While here, update the hypercall status check to use the new helper function instead of open coding. No functional change. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Sunil Muthuswamy <sunilmut@microsoft.com> Link: https://lore.kernel.org/r/1622669804-2016-1-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> 2019-11-22T01:10:44+00:00 Branden Bonaby brandonbonaby94@gmail.com 2019-10-03T21:01:49+00:00 urn:sha1:af9ca6f9bb16e446a44393a797d0ae74d356a5c7 Introduce user specified latency in the packet reception path By exposing the test parameters as part of the debugfs channel attributes. We will control the testing state via these attributes. Signed-off-by: Branden Bonaby <brandonbonaby94@gmail.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org>