Changes in hyperv_ipi.c

06bc7ff0a1e0f2b0102e1314e3527a7ec0997851 - Merge tag 'asoc-fix-v7.1-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

Wed, 06 May 2026 16:10:00 +0200

Merge tag 'asoc-fix-v7.1-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linusASoC: Fixes for v7.1Another batch of fixes, plus a couple of quirks (mostly AMD ones, as hasbeen the case recently). All driver changes, including fixes for theKUnit tests for the Cirrus drivers that could cause memory corruption. List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

57b8e2d666a31fa201432d58f5fe3469a0dd83ba - Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Wed, 29 Apr 2026 15:56:50 +0200

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmPull kvm updates from Paolo Bonzini: "On top of a lot of Arm fixes, this includes a massive rename of types and variables in tools/testing/selftests/kvm - these were unnecessarily different from what the kernel uses, so they're being made consistent. arm64: - Allow tracing for non-pKVM, which was accidentally disabled when the series was merged - Rationalise the way the pKVM hypercall ranges are defined by using the same mechanism as already used for the vcpu_sysreg enum - Enforce that SMCCC function numbers relayed by the pKVM proxy are actually compliant with the specification - Fix a couple of feature to idreg mappings which resulted in the wrong sanitisation being applied - Fix the GICD_IIDR revision number field that could never been written correctly by userspace - Make kvm_vcpu_initialized() correctly use its parameter instead of relying on the surrounding context - Enforce correct ordering in __pkvm_init_vcpu(), plugging a potential pin leak at the same time - Move __pkvm_init_finalise() to a less dangerous spot, avoiding future problems - Restore functional userspace irqchip support after a four year breakage (last functional kernel was 5.18...) - Spelling fixes Selftests: - Rename types across all KVM selftests to more closely align with types used in the kernel: vm_vaddr_t -> gva_t vm_paddr_t -> gpa_t uint64_t -> u64 uint32_t -> u32 uint16_t -> u16 uint8_t -> u8 int64_t -> s64 int32_t -> s32 int16_t -> s16 int8_t -> s8 - Fix Loongarch compilation"* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (31 commits) KVM: selftests: Add check_steal_time_uapi() implementation for LoongArch KVM: arm64: Wake-up from WFI when iqrchip is in userspace KVM: arm64: Fix initialisation order in __pkvm_init_finalise() KVM: arm64: Fix pin leak and publication ordering in __pkvm_init_vcpu() KVM: arm64: Fix kvm_vcpu_initialized() macro parameter KVM: arm64: Fix FEAT_SPE_FnE to use PMSIDR_EL1.FnE, not PMSVer KVM: arm64: Fix typo in feature check comments KVM: arm64: Fix FEAT_Debugv8p9 to check DebugVer, not PMUVer KVM: arm64: Reject non compliant SMCCC function calls in pKVM KVM: arm64: vgic: Fix IIDR revision field extracted from wrong value KVM: selftests: Replace "paddr" with "gpa" throughout KVM: selftests: Replace "u64 nested_paddr" with "gpa_t l2_gpa" KVM: selftests: Replace "u64 gpa" with "gpa_t" throughout KVM: selftests: Replace "vaddr" with "gva" throughout KVM: selftests: Clarify that arm64's inject_uer() takes a host PA, not a guest PA KVM: selftests: Rename translate_to_host_paddr() => translate_hva_to_hpa() KVM: selftests: Rename vm_vaddr_populate_bitmap() => vm_populate_gva_bitmap() KVM: selftests: Rename vm_vaddr_unused_gap() => vm_unused_gva_gap() KVM: selftests: Drop "vaddr_" from APIs that allocate memory for a given VM KVM: selftests: Use u8 instead of uint8_t ... List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

39f1c201b93f4ff71631bac72cff6eb155f976a4 - Merge tag 'kvm-x86-selftests_kernel_types-7.1' of https://github.com/kvm-x86/linux into HEAD

Mon, 27 Apr 2026 10:24:41 +0200

Merge tag 'kvm-x86-selftests_kernel_types-7.1' of https://github.com/kvm-x86/linux into HEADKVM selftests type renames for 7.1Renames types across all KVM selftests to more closely align with types usedin the kernel: vm_vaddr_t -> gva_t vm_paddr_t -> gpa_t uint64_t -> u64 uint32_t -> u32 uint16_t -> u16 uint8_t -> u8 int64_t -> s64 int32_t -> s32 int16_t -> s16 int8_t -> s8Using the kernel's preferred types eliminates a source of friction for manycontributors, as the majority of KVM selftests contributions come from kerneldevelopers. The kernel names are also shorter, which allows for more concisecode, and in any many cases eliminates newlines thanks to shorter types andparameter names.Rename variables and parameters as well as types, e.g. gpa instead of paddr,to again align with the kernel, and in a few cases to remove ambiguity, e.g.where paddr is used to refer to a _host_ physical address. List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

85819fa0e3b98682b8c57c6d8ba57e7a9c6032ea - KVM: selftests: Drop "vaddr_" from APIs that allocate memory for a given VM

Mon, 20 Apr 2026 23:19:56 +0200

KVM: selftests: Drop "vaddr_" from APIs that allocate memory for a given VMNow that KVM selftests use gva_t instead of vm_vaddr_t, drop "vaddr_" fromthe core memory allocation APIs as the information is extraneous and doesmore harm than good. E.g. the APIs don't _just_ allocate virtual memory,they allocate backing physical memory and install mappings in the guestpage tables. And as proven by kmalloc() and malloc(), developers generallyexpect that allocations come with a working virtual address.Opportunistically clean up the function comment for vm_alloc(), and dropthe misleading and superfluous comments for its wrappers.No functional change intended.Link: https://patch.msgid.link/20260420212004.3938325-12-seanjc@google.comSigned-off-by: Sean Christopherson List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

26f8453288d4c1fb8c96802eae15ddc988f5e068 - KVM: selftests: Use u64 instead of uint64_t

Mon, 20 Apr 2026 23:19:49 +0200

KVM: selftests: Use u64 instead of uint64_tUse u64 instead of uint64_t to make the KVM selftests code more conciseand more similar to the kernel (since selftests are primarily developedby kernel developers).This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint64_t/u64/g'Then by manually adjusting whitespace to make checkpatch.pl happy.Include in include/kvm_util_types.h, iinclude/test_util.h,and include/x86/pmu.h to pick up the tools-defined u64. Arguably, allheaders (especially kvm_util_types.h) should have already been includingstdint.h to get uint64_t from the libc headers, but the missing dependencyonly rears its head once KVM uses u64 instead of uint64_t.No functional change intended.Signed-off-by: David Matlack [sean: rename pread_uint64() => pread_u64, expand on types.h include]Link: https://patch.msgid.link/20260420212004.3938325-5-seanjc@google.comSigned-off-by: Sean Christopherson List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

6d3494255ac0180d3047ea632367718e0625bd2c - KVM: selftests: Use gpa_t for GPAs in Hyper-V selftests

Mon, 20 Apr 2026 23:19:48 +0200

KVM: selftests: Use gpa_t for GPAs in Hyper-V selftestsFix various Hyper-V selftests to use gpa_t for variables that containguest physical addresses, rather than gva_t. In practice, the bugs arebenign as both gva_t and gpa_t are u64 typedefs, i.e. gpa_t and gva_t areinterchangeable from a functional perspective, the code is just confusing.No functional change intended.Signed-off-by: David Matlack [sean: call out that both are u64 typedefs]Link: https://patch.msgid.link/20260420212004.3938325-4-seanjc@google.comSigned-off-by: Sean Christopherson List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

5567fc9dcd7ed46678cd68e6ca0662331d42f0ac - KVM: selftests: Use gva_t instead of vm_vaddr_t

Mon, 20 Apr 2026 23:19:46 +0200

KVM: selftests: Use gva_t instead of vm_vaddr_tReplace all occurrences of vm_vaddr_t with gva_t to align with KVM codeand with the conversion helpers (e.g. addr_gva2hva()).This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/vm_vaddr_/gva_/g'Then by manually adjusting whitespace to make checkpatch.pl happy, anddropping renames of functions that allocate memory within a given VM.No functional change intended.Signed-off-by: David Matlack [sean: drop renames of allocator APIs]Link: https://patch.msgid.link/20260420212004.3938325-2-seanjc@google.comSigned-off-by: Sean Christopherson List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

f4b369c6fe0ceaba2da2daff8c9eb415f85926dd - Merge branch 'next' into for-linus

Mon, 20 Apr 2026 03:28:57 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.1 merge window. List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

0421ccdfad0d92713a812a5aeb7d07b0ea7213c8 - Merge tag 'v7.0-rc3' into next

Thu, 12 Mar 2026 18:44:42 +0100

Merge tag 'v7.0-rc3' into nextSync up with the mainline to brig up the latest changes, specificallychanges to ALPS driver. List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

ec496f77b4c11036cc835d6f045fb5e5ef1e6530 - Merge branch 'for-6.20/sony' into for-linus

Mon, 09 Feb 2026 17:33:26 +0100

Merge branch 'for-6.20/sony' into for-linus- Support for Rock band 4 PS4 and PS5 guitars (Rosalie Wanders) List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

cc4adab164b772a34b3340d644b7c4728498581e - Merge tag 'v6.19-rc1' into msm-next

Tue, 20 Jan 2026 23:06:55 +0100

Merge tag 'v6.19-rc1' into msm-nextMerge Linux 6.19-rc1 in order to catch up with other changes (e.g. UBWCconfig database defining UBWC_6).Signed-off-by: Dmitry Baryshkov List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

5add3c3c280a35f7e258e9cef7607db5a2e56fdc - Merge drm/drm-next into drm-xe-next

Fri, 19 Dec 2025 11:51:22 +0100

Merge drm/drm-next into drm-xe-nextBackmerging to bring in 6.19-rc1. An important upstream bugfix andto help unblock PTL CI.Signed-off-by: Thomas Hellström List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

ec439c38013550420aecc15988ae6acb670838c1 - Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after 6.19-rc1

Wed, 17 Dec 2025 06:29:38 +0100

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after 6.19-rc1Cross-merge BPF and other fixes after downstream PR.Signed-off-by: Alexei Starovoitov List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

b8304863a3990d0f18c38e5b94191830a63ee1af - Merge drm/drm-next into drm-intel-next

Mon, 15 Dec 2025 14:24:02 +0100

Merge drm/drm-next into drm-intel-nextSync-up some display code needed for Async flips refactor.Signed-off-by: Rodrigo Vivi List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

7f790dd21a931c61167f7bdc327aecf2cebad327 - Merge drm/drm-next into drm-misc-next

Mon, 15 Dec 2025 09:27:39 +0100

Merge drm/drm-next into drm-misc-nextLet's kickstart the v6.20 (7.0?) release cycle.Signed-off-by: Maxime Ripard List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

24f171c7e145f43b9f187578e89b0982ce87e54c - Merge tag 'asoc-fix-v6.19-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

Sun, 21 Dec 2025 11:11:11 +0100

Merge tag 'asoc-fix-v6.19-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linusASoC: Fixes for v6.19We've been quite busy with fixes since the merge window, though not inany particularly exciting ways - the standout thing is the fix for _SXcontrols which were broken by a change to how we do clamping, otherwiseit's all fairly run of the mill fixes and quirks. List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

84318277d6334c6981ab326d4acc87c6a6ddc9b8 - Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Mon, 15 Dec 2025 12:53:27 +0100

Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixesPull in rc1 to include all changes since the merge window closed,and grab all fixes and changes from drm/drm-next.Signed-off-by: Maarten Lankhorst List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

51d90a15fedf8366cb96ef68d0ea2d0bf15417d2 - Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Sat, 06 Dec 2025 02:01:20 +0100

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmPull KVM updates from Paolo Bonzini: "ARM: - Support for userspace handling of synchronous external aborts (SEAs), allowing the VMM to potentially handle the abort in a non-fatal manner - Large rework of the VGIC's list register handling with the goal of supporting more active/pending IRQs than available list registers in hardware. In addition, the VGIC now supports EOImode==1 style deactivations for IRQs which may occur on a separate vCPU than the one that acked the IRQ - Support for FEAT_XNX (user / privileged execute permissions) and FEAT_HAF (hardware update to the Access Flag) in the software page table walkers and shadow MMU - Allow page table destruction to reschedule, fixing long need_resched latencies observed when destroying a large VM - Minor fixes to KVM and selftests Loongarch: - Get VM PMU capability from HW GCFG register - Add AVEC basic support - Use 64-bit register definition for EIOINTC - Add KVM timer test cases for tools/selftests RISC/V: - SBI message passing (MPXY) support for KVM guest - Give a new, more specific error subcode for the case when in-kernel AIA virtualization fails to allocate IMSIC VS-file - Support KVM_DIRTY_LOG_INITIALLY_SET, enabling dirty log gradually in small chunks - Fix guest page fault within HLV* instructions - Flush VS-stage TLB after VCPU migration for Andes cores s390: - Always allocate ESCA (Extended System Control Area), instead of starting with the basic SCA and converting to ESCA with the addition of the 65th vCPU. The price is increased number of exits (and worse performance) on z10 and earlier processor; ESCA was introduced by z114/z196 in 2010 - VIRT_XFER_TO_GUEST_WORK support - Operation exception forwarding support - Cleanups x86: - Skip the costly "zap all SPTEs" on an MMIO generation wrap if MMIO SPTE caching is disabled, as there can't be any relevant SPTEs to zap - Relocate a misplaced export - Fix an async #PF bug where KVM would clear the completion queue when the guest transitioned in and out of paging mode, e.g. when handling an SMI and then returning to paged mode via RSM - Leave KVM's user-return notifier registered even when disabling virtualization, as long as kvm.ko is loaded. On reboot/shutdown, keeping the notifier registered is ok; the kernel does not use the MSRs and the callback will run cleanly and restore host MSRs if the CPU manages to return to userspace before the system goes down - Use the checked version of {get,put}_user() - Fix a long-lurking bug where KVM's lack of catch-up logic for periodic APIC timers can result in a hard lockup in the host - Revert the periodic kvmclock sync logic now that KVM doesn't use a clocksource that's subject to NTP corrections - Clean up KVM's handling of MMIO Stale Data and L1TF, and bury the latter behind CONFIG_CPU_MITIGATIONS - Context switch XCR0, XSS, and PKRU outside of the entry/exit fast path; the only reason they were handled in the fast path was to paper of a bug in the core #MC code, and that has long since been fixed - Add emulator support for AVX MOV instructions, to play nice with emulated devices whose guest drivers like to access PCI BARs with large multi-byte instructions x86 (AMD): - Fix a few missing "VMCB dirty" bugs - Fix the worst of KVM's lack of EFER.LMSLE emulation - Add AVIC support for addressing 4k vCPUs in x2AVIC mode - Fix incorrect handling of selective CR0 writes when checking intercepts during emulation of L2 instructions - Fix a currently-benign bug where KVM would clobber SPEC_CTRL[63:32] on VMRUN and #VMEXIT - Fix a bug where KVM corrupt the guest code stream when re-injecting a soft interrupt if the guest patched the underlying code after the VM-Exit, e.g. when Linux patches code with a temporary INT3 - Add KVM_X86_SNP_POLICY_BITS to advertise supported SNP policy bits to userspace, and extend KVM "support" to all policy bits that don't require any actual support from KVM x86 (Intel): - Use the root role from kvm_mmu_page to construct EPTPs instead of the current vCPU state, partly as worthwhile cleanup, but mostly to pave the way for tracking per-root TLB flushes, and elide EPT flushes on pCPU migration if the root is clean from a previous flush - Add a few missing nested consistency checks - Rip out support for doing "early" consistency checks via hardware as the functionality hasn't been used in years and is no longer useful in general; replace it with an off-by-default module param to WARN if hardware fails a check that KVM does not perform - Fix a currently-benign bug where KVM would drop the guest's SPEC_CTRL[63:32] on VM-Enter - Misc cleanups - Overhaul the TDX code to address systemic races where KVM (acting on behalf of userspace) could inadvertantly trigger lock contention in the TDX-Module; KVM was either working around these in weird, ugly ways, or was simply oblivious to them (though even Yan's devilish selftests could only break individual VMs, not the host kernel) - Fix a bug where KVM could corrupt a vCPU's cpu_list when freeing a TDX vCPU, if creating said vCPU failed partway through - Fix a few sparse warnings (bad annotation, 0 != NULL) - Use struct_size() to simplify copying TDX capabilities to userspace - Fix a bug where TDX would effectively corrupt user-return MSR values if the TDX Module rejects VP.ENTER and thus doesn't clobber host MSRs as expected Selftests: - Fix a math goof in mmu_stress_test when running on a single-CPU system/VM - Forcefully override ARCH from x86_64 to x86 to play nice with specifying ARCH=x86_64 on the command line - Extend a bunch of nested VMX to validate nested SVM as well - Add support for LA57 in the core VM_MODE_xxx macro, and add a test to verify KVM can save/restore nested VMX state when L1 is using 5-level paging, but L2 is not - Clean up the guest paging code in anticipation of sharing the core logic for nested EPT and nested NPT guest_memfd: - Add NUMA mempolicy support for guest_memfd, and clean up a variety of rough edges in guest_memfd along the way - Define a CLASS to automatically handle get+put when grabbing a guest_memfd from a memslot to make it harder to leak references - Enhance KVM selftests to make it easer to develop and debug selftests like those added for guest_memfd NUMA support, e.g. where test and/or KVM bugs often result in hard-to-debug SIGBUS errors - Misc cleanups Generic: - Use the recently-added WQ_PERCPU when creating the per-CPU workqueue for irqfd cleanup - Fix a goof in the dirty ring documentation - Fix choice of target for directed yield across different calls to kvm_vcpu_on_spin(); the function was always starting from the first vCPU instead of continuing the round-robin search"* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (260 commits) KVM: arm64: at: Update AF on software walk only if VM has FEAT_HAFDBS KVM: arm64: at: Use correct HA bit in TCR_EL2 when regime is EL2 KVM: arm64: Document KVM_PGTABLE_PROT_{UX,PX} KVM: arm64: Fix spelling mistake "Unexpeced" -> "Unexpected" KVM: arm64: Add break to default case in kvm_pgtable_stage2_pte_prot() KVM: arm64: Add endian casting to kvm_swap_s[12]_desc() KVM: arm64: Fix compilation when CONFIG_ARM64_USE_LSE_ATOMICS=n KVM: arm64: selftests: Add test for AT emulation KVM: arm64: nv: Expose hardware access flag management to NV guests KVM: arm64: nv: Implement HW access flag management in stage-2 SW PTW KVM: arm64: Implement HW access flag management in stage-1 SW PTW KVM: arm64: Propagate PTW errors up to AT emulation KVM: arm64: Add helper for swapping guest descriptor KVM: arm64: nv: Use pgtable definitions in stage-2 walk KVM: arm64: Handle endianness in read helper for emulated PTW KVM: arm64: nv: Stop passing vCPU through void ptr in S2 PTW KVM: arm64: Call helper for reading descriptors directly KVM: arm64: nv: Advertise support for FEAT_XNX KVM: arm64: Teach ptdump about FEAT_XNX permissions KVM: s390: Use generic VIRT_XFER_TO_GUEST_WORK functions ... List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

b0bf3d67a7f05169edb254f826c9f6052b883f2e - Merge tag 'kvm-x86-selftests-6.19' of https://github.com/kvm-x86/linux into HEAD

Wed, 26 Nov 2025 09:35:40 +0100

Merge tag 'kvm-x86-selftests-6.19' of https://github.com/kvm-x86/linux into HEADKVM selftests changes for 6.19: - Fix a math goof in mmu_stress_test when running on a single-CPU system/VM. - Forcefully override ARCH from x86_64 to x86 to play nice with specifying ARCH=x86_64 on the command line. - Extend a bunch of nested VMX to validate nested SVM as well. - Add support for LA57 in the core VM_MODE_xxx macro, and add a test to verify KVM can save/restore nested VMX state when L1 is using 5-level paging, but L2 is not. - Clean up the guest paging code in anticipation of sharing the core logic for nested EPT and nested NPT. List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c

28b2dced8ba4604b2cdd97c11d7fbd0fa99f9835 - KVM: selftests: Stop hardcoding PAGE_SIZE in x86 selftests

Tue, 21 Oct 2025 09:47:21 +0200

KVM: selftests: Stop hardcoding PAGE_SIZE in x86 selftestsUse PAGE_SIZE instead of 4096.Signed-off-by: Yosry Ahmed Link: https://patch.msgid.link/20251021074736.1324328-9-yosry.ahmed@linux.devSigned-off-by: Sean Christopherson List of files: /linux/tools/testing/selftests/kvm/x86/hyperv_ipi.c