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Merge tag 'hyperv-next-signed-20250123' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu: - Introduce a new set of Hyper-V headers in include/hyperv and replace the old hyperv-tlfs.h with the new headers (Nuno Das Neves) - Fixes for the Hyper-V VTL mode (Roman Kisel) - Fixes for cpu mask usage in Hyper-V code (Michael Kelley) - Document the guest VM hibernation behaviour (Michael Kelley) - Miscellaneous fixes and cleanups (Jacob Pan, John Starks, Naman Jain) * tag 'hyperv-next-signed-20250123' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: Documentation: hyperv: Add overview of guest VM hibernation hyperv: Do not overlap the hvcall IO areas in hv_vtl_apicid_to_vp_id() hyperv: Do not overlap the hvcall IO areas in get_vtl() hyperv: Enable the hypercall output page for the VTL mode hv_balloon: Fallback to generic_online_page() for non-HV hot added mem Drivers: hv: vmbus: Log on missing offers if any Drivers: hv: vmbus: Wait for boot-time offers during boot and resume uio_hv_generic: Add a check for HV_NIC for send, receive buffers setup iommu/hyper-v: Don't assume cpu_possible_mask is dense Drivers: hv: Don't assume cpu_possible_mask is dense x86/hyperv: Don't assume cpu_possible_mask is dense hyperv: Remove the now unused hyperv-tlfs.h files hyperv: Switch from hyperv-tlfs.h to hyperv/hvhdk.h hyperv: Add new Hyper-V headers in include/hyperv hyperv: Clean up unnecessary #includes hyperv: Move hv_connection_id to hyperv-tlfs.h
2 parents b46c89c + 2e03358 commit 382e391

43 files changed

Lines changed: 3261 additions & 1922 deletions

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‎Documentation/virt/hyperv/hibernation.rst‎

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‎Documentation/virt/hyperv/index.rst‎

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@@ -11,4 +11,5 @@ Hyper-V Enlightenments
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vmbus
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clocks
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vpci
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hibernation
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coco

‎MAINTAINERS‎

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@@ -10739,10 +10739,8 @@ F: Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml
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F: Documentation/networking/device_drivers/ethernet/microsoft/netvsc.rst
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F: Documentation/virt/hyperv
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F: arch/arm64/hyperv
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F: arch/arm64/include/asm/hyperv-tlfs.h
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F: arch/arm64/include/asm/mshyperv.h
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F: arch/x86/hyperv
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F: arch/x86/include/asm/hyperv-tlfs.h
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F: arch/x86/include/asm/mshyperv.h
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F: arch/x86/include/asm/trace/hyperv.h
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F: arch/x86/kernel/cpu/mshyperv.c
@@ -10758,9 +10756,13 @@ F: drivers/pci/controller/pci-hyperv.c
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F: drivers/scsi/storvsc_drv.c
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F: drivers/uio/uio_hv_generic.c
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F: drivers/video/fbdev/hyperv_fb.c
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F: include/asm-generic/hyperv-tlfs.h
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F: include/asm-generic/mshyperv.h
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F: include/clocksource/hyperv_timer.h
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F: include/hyperv/hvgdk.h
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F: include/hyperv/hvgdk_ext.h
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F: include/hyperv/hvgdk_mini.h
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F: include/hyperv/hvhdk.h
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F: include/hyperv/hvhdk_mini.h
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F: include/linux/hyperv.h
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F: include/net/mana
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F: include/uapi/linux/hyperv.h

‎arch/arm64/hyperv/hv_core.c‎

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@@ -11,11 +11,10 @@
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#include <linux/types.h>
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#include <linux/export.h>
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#include <linux/mm.h>
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#include <linux/hyperv.h>
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#include <linux/arm-smccc.h>
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#include <linux/module.h>
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#include <asm-generic/bug.h>
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#include <asm/hyperv-tlfs.h>
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#include <hyperv/hvhdk.h>
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#include <asm/mshyperv.h>
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/*

‎arch/arm64/hyperv/mshyperv.c‎

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@@ -49,12 +49,12 @@ static int __init hyperv_init(void)
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hv_set_vpreg(HV_REGISTER_GUEST_OS_ID, guest_id);
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/* Get the features and hints from Hyper-V */
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hv_get_vpreg_128(HV_REGISTER_FEATURES, &result);
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hv_get_vpreg_128(HV_REGISTER_PRIVILEGES_AND_FEATURES_INFO, &result);
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ms_hyperv.features = result.as32.a;
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ms_hyperv.priv_high = result.as32.b;
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ms_hyperv.misc_features = result.as32.c;
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hv_get_vpreg_128(HV_REGISTER_ENLIGHTENMENTS, &result);
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hv_get_vpreg_128(HV_REGISTER_FEATURES_INFO, &result);
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ms_hyperv.hints = result.as32.a;
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pr_info("Hyper-V: privilege flags low 0x%x, high 0x%x, hints 0x%x, misc 0x%x\n",

‎arch/arm64/include/asm/hyperv-tlfs.h‎

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‎arch/arm64/include/asm/mshyperv.h‎

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@@ -6,9 +6,8 @@
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* the ARM64 architecture. See include/asm-generic/mshyperv.h for
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* definitions are that architecture independent.
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*
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* Definitions that are specified in the Hyper-V Top Level Functional
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* Spec (TLFS) should not go in this file, but should instead go in
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* hyperv-tlfs.h.
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* Definitions that are derived from Hyper-V code or headers should not go in
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* this file, but should instead go in the relevant files in include/hyperv.
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*
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* Copyright (C) 2021, Microsoft, Inc.
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*
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#include <linux/types.h>
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#include <linux/arm-smccc.h>
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#include <asm/hyperv-tlfs.h>
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#include <hyperv/hvhdk.h>
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/*
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* Declare calls to get and set Hyper-V VP register values on ARM64, which

‎arch/x86/hyperv/hv_apic.c‎

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@@ -23,7 +23,6 @@
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#include <linux/vmalloc.h>
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#include <linux/mm.h>
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#include <linux/clockchips.h>
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#include <linux/hyperv.h>
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#include <linux/slab.h>
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#include <linux/cpuhotplug.h>
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#include <asm/hypervisor.h>

‎arch/x86/hyperv/hv_init.c‎

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@@ -19,15 +19,14 @@
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#include <asm/sev.h>
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#include <asm/ibt.h>
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#include <asm/hypervisor.h>
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#include <asm/hyperv-tlfs.h>
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#include <hyperv/hvhdk.h>
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#include <asm/mshyperv.h>
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#include <asm/idtentry.h>
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#include <asm/set_memory.h>
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#include <linux/kexec.h>
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#include <linux/version.h>
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#include <linux/vmalloc.h>
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#include <linux/mm.h>
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#include <linux/hyperv.h>
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#include <linux/slab.h>
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#include <linux/kernel.h>
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#include <linux/cpuhotplug.h>
@@ -416,24 +415,24 @@ static void __init hv_get_partition_id(void)
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static u8 __init get_vtl(void)
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{
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u64 control = HV_HYPERCALL_REP_COMP_1 | HVCALL_GET_VP_REGISTERS;
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struct hv_get_vp_registers_input *input;
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struct hv_get_vp_registers_output *output;
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struct hv_input_get_vp_registers *input;
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struct hv_output_get_vp_registers *output;
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unsigned long flags;
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u64 ret;
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424423
local_irq_save(flags);
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input = *this_cpu_ptr(hyperv_pcpu_input_arg);
426-
output = (struct hv_get_vp_registers_output *)input;
425+
output = *this_cpu_ptr(hyperv_pcpu_output_arg);
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428-
memset(input, 0, struct_size(input, element, 1));
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input->header.partitionid = HV_PARTITION_ID_SELF;
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input->header.vpindex = HV_VP_INDEX_SELF;
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input->header.inputvtl = 0;
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input->element[0].name0 = HV_X64_REGISTER_VSM_VP_STATUS;
427+
memset(input, 0, struct_size(input, names, 1));
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input->partition_id = HV_PARTITION_ID_SELF;
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input->vp_index = HV_VP_INDEX_SELF;
430+
input->input_vtl.as_uint8 = 0;
431+
input->names[0] = HV_REGISTER_VSM_VP_STATUS;
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434433
ret = hv_do_hypercall(control, input, output);
435434
if (hv_result_success(ret)) {
436-
ret = output->as64.low & HV_X64_VTL_MASK;
435+
ret = output->values[0].reg8 & HV_X64_VTL_MASK;
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} else {
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pr_err("Failed to get VTL(error: %lld) exiting...\n", ret);
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BUG();
@@ -473,7 +472,7 @@ void __init hyperv_init(void)
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if (hv_isolation_type_tdx())
474473
hv_vp_assist_page = NULL;
475474
else
476-
hv_vp_assist_page = kcalloc(num_possible_cpus(),
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hv_vp_assist_page = kcalloc(nr_cpu_ids,
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sizeof(*hv_vp_assist_page),
478477
GFP_KERNEL);
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if (!hv_vp_assist_page) {

‎arch/x86/hyperv/hv_proc.c‎

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@@ -3,7 +3,6 @@
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#include <linux/vmalloc.h>
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#include <linux/mm.h>
55
#include <linux/clockchips.h>
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#include <linux/hyperv.h>
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#include <linux/slab.h>
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#include <linux/cpuhotplug.h>
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#include <linux/minmax.h>
@@ -177,7 +176,7 @@ int hv_call_create_vp(int node, u64 partition_id, u32 vp_index, u32 flags)
177176
input->partition_id = partition_id;
178177
input->vp_index = vp_index;
179178
input->flags = flags;
180-
input->subnode_type = HvSubnodeAny;
179+
input->subnode_type = HV_SUBNODE_ANY;
181180
input->proximity_domain_info = hv_numa_node_to_pxm_info(node);
182181
status = hv_do_hypercall(HVCALL_CREATE_VP, input, NULL);
183182
local_irq_restore(irq_flags);

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