kernel/git/stable/linux.git/include/asm-generic/hyperv-tlfs.h, branch master

hyperv: Remove the now unused hyperv-tlfs.h files

2025-01-10T00:54:21+00:00

Remove all hyperv-tlfs.h files. These are no longer included anywhere. hyperv/hvhdk.h serves the same role, but with an easier path for adding new definitions. Remove the relevant lines in MAINTAINERS. Signed-off-by: Nuno Das Neves Reviewed-by: Michael Kelley Reviewed-by: Easwar Hariharan Link: https://lore.kernel.org/r/1732577084-2122-6-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <1732577084-2122-6-git-send-email-nunodasneves@linux.microsoft.com>

hyperv: Move hv_connection_id to hyperv-tlfs.h

2025-01-08T08:18:26+00:00

This definition is in the wrong file; it is part of the TLFS doc. Signed-off-by: Nuno Das Neves Acked-by: Wei Liu Reviewed-by: Easwar Hariharan Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/1732577084-2122-2-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <1732577084-2122-2-git-send-email-nunodasneves@linux.microsoft.com>

Merge tag 'hyperv-fixes-signed-20240411' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

2024-04-11T23:23:56+00:00

Pull hyperv fixes from Wei Liu: - Some cosmetic changes (Erni Sri Satya Vennela, Li Zhijian) - Introduce hv_numa_node_to_pxm_info() (Nuno Das Neves) - Fix KVP daemon to handle IPv4 and IPv6 combination for keyfile format (Shradha Gupta) - Avoid freeing decrypted memory in a confidential VM (Rick Edgecombe and Michael Kelley) * tag 'hyperv-fixes-signed-20240411' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: Drivers: hv: vmbus: Don't free ring buffers that couldn't be re-encrypted uio_hv_generic: Don't free decrypted memory hv_netvsc: Don't free decrypted memory Drivers: hv: vmbus: Track decrypted status in vmbus_gpadl Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails hv/hv_kvp_daemon: Handle IPv4 and Ipv6 combination for keyfile format hv: vmbus: Convert sprintf() family to sysfs_emit() family mshyperv: Introduce hv_numa_node_to_pxm_info() x86/hyperv: Cosmetic changes for hv_apic.c

mshyperv: Introduce hv_numa_node_to_pxm_info()

2024-03-22T23:40:36+00:00

Factor out logic for converting numa node to hv_proximity_domain_info into a helper function. Change hv_proximity_domain_info to a struct to improve readability. While at it, rename hv_add_logical_processor_* structs to the correct hv_input_/hv_output_ prefix, and remove the flags field which is not present in the ABI. Signed-off-by: Nuno Das Neves Reviewed-by: Wei Liu Link: https://lore.kernel.org/r/1711141826-9458-1-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <1711141826-9458-1-git-send-email-nunodasneves@linux.microsoft.com>

hyperv-tlfs: Rename some HV_REGISTER_* defines for consistency

2024-03-18T04:58:49+00:00

Rename HV_REGISTER_GUEST_OSID to HV_REGISTER_GUEST_OS_ID. This matches the existing HV_X64_MSR_GUEST_OS_ID. Rename HV_REGISTER_CRASH_* to HV_REGISTER_GUEST_CRASH_*. Including GUEST_ is consistent with other #defines such as HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE. The new names also match the TLFS document more accurately, i.e. HvRegisterGuestCrash*. Signed-off-by: Nuno Das Neves Link: https://lore.kernel.org/r/1710285687-9160-1-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <1710285687-9160-1-git-send-email-nunodasneves@linux.microsoft.com>

mshyperv: Introduce hv_get_hypervisor_version function

2024-03-12T05:17:50+00:00

Introduce x86_64 and arm64 functions to get the hypervisor version information and store it in a structure for simpler parsing. Use the new function to get and parse the version at boot time. While at it, move the printing code to hv_common_init() so it is not duplicated. Signed-off-by: Nuno Das Neves Acked-by: Wei Liu Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/1709852618-29110-1-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <1709852618-29110-1-git-send-email-nunodasneves@linux.microsoft.com>

hyperv-tlfs: Change prefix of generic HV_REGISTER_* MSRs to HV_MSR_*

2024-03-04T06:59:18+00:00

The HV_REGISTER_ are used as arguments to hv_set/get_register(), which delegate to arch-specific mechanisms for getting/setting synthetic Hyper-V MSRs. On arm64, HV_REGISTER_ defines are synthetic VP registers accessed via the get/set vp registers hypercalls. The naming matches the TLFS document, although these register names are not specific to arm64. However, on x86 the prefix HV_REGISTER_ indicates Hyper-V MSRs accessed via rdmsrl()/wrmsrl(). This is not consistent with the TLFS doc, where HV_REGISTER_ is *only* used for used for VP register names used by the get/set register hypercalls. To fix this inconsistency and prevent future confusion, change the arch-generic aliases used by callers of hv_set/get_register() to have the prefix HV_MSR_ instead of HV_REGISTER_. Use the prefix HV_X64_MSR_ for the x86-only Hyper-V MSRs. On x86, the generic HV_MSR_'s point to the corresponding HV_X64_MSR_. Move the arm64 HV_REGISTER_* defines to the asm-generic hyperv-tlfs.h, since these are not specific to arm64. On arm64, the generic HV_MSR_'s point to the corresponding HV_REGISTER_. While at it, rename hv_get/set_registers() and related functions to hv_get/set_msr(), hv_get/set_nested_msr(), etc. These are only used for Hyper-V MSRs and this naming makes that clear. Signed-off-by: Nuno Das Neves Reviewed-by: Wei Liu Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/1708440933-27125-1-git-send-email-nunodasneves@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <1708440933-27125-1-git-send-email-nunodasneves@linux.microsoft.com>

x86/hyperv: Add smp support for SEV-SNP guest

2023-08-22T00:38:20+00:00

In the AMD SEV-SNP guest, AP needs to be started up via sev es save area and Hyper-V requires to call HVCALL_START_VP hypercall to pass the gpa of sev es save area with AP's vp index and VTL(Virtual trust level) parameters. Override wakeup_secondary_cpu_64 callback with hv_snp_boot_ap. Reviewed-by: Dexuan Cui Reviewed-by: Michael Kelley Signed-off-by: Tianyu Lan Signed-off-by: Wei Liu Link: https://lore.kernel.org/r/20230818102919.1318039-8-ltykernel@gmail.com

x86/hyperv: Add VTL specific structs and hypercalls

2023-04-18T17:29:51+00:00

Add structs and hypercalls required to enable VTL support on x86. Signed-off-by: Saurabh Sengar Reviewed-by: Michael Kelley Reviewed-by: Stanislav Kinsburskii Link: https://lore.kernel.org/r/1681192532-15460-3-git-send-email-ssengar@linux.microsoft.com Signed-off-by: Wei Liu

PCI: hv: Enable PCI pass-thru devices in Confidential VMs

2023-04-17T19:19:04+00:00

For PCI pass-thru devices in a Confidential VM, Hyper-V requires that PCI config space be accessed via hypercalls. In normal VMs, config space accesses are trapped to the Hyper-V host and emulated. But in a confidential VM, the host can't access guest memory to decode the instruction for emulation, so an explicit hypercall must be used. Add functions to make the new MMIO read and MMIO write hypercalls. Update the PCI config space access functions to use the hypercalls when such use is indicated by Hyper-V flags. Also, set the flag to allow the Hyper-V PCI driver to be loaded and used in a Confidential VM (a.k.a., "Isolation VM"). The driver has previously been hardened against a malicious Hyper-V host[1]. [1] https://lore.kernel.org/all/20220511223207.3386-2-parri.andrea@gmail.com/ Co-developed-by: Dexuan Cui Signed-off-by: Dexuan Cui Signed-off-by: Michael Kelley Reviewed-by: Boqun Feng Reviewed-by: Haiyang Zhang Link: https://lore.kernel.org/r/1679838727-87310-13-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu