user/sven/linux.git/virt/kvm/kvm_main.c, branch next/master

Merge branch 'next' of https://github.com/kvm-x86/linux.git

2026-04-06T14:02:09Z

mm: change to return bool for the MMU notifier's young flag check

2026-04-05T20:53:35Z

The MMU notifier young flag check related functions only return whether the young flag was set. Change the return type to bool to make the intention clearer. Link: https://lkml.kernel.org/r/a9ad3fe938002d87358e7bfca264f753ab602561.1774075004.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang Reviewed-by: Lorenzo Stoakes (Oracle) Acked-by: David Hildenbrand (Arm) Cc: Liam Howlett Cc: Michal Hocko Cc: Mike Rapoport Cc: Ritesh Harjani (IBM) Cc: Suren Baghdasaryan Signed-off-by: Andrew Morton

KVM: remove hugetlb.h inclusion

2026-04-05T20:53:23Z

hugetlb.h is no longer required now that we moved vma_kernel_pagesize() to mm.h. Link: https://lkml.kernel.org/r/20260309151901.123947-4-david@kernel.org Signed-off-by: David Hildenbrand (Arm) Reviewed-by: Lorenzo Stoakes (Oracle) Acked-by: Mike Rapoport (Microsoft) Cc: "Christophe Leroy (CS GROUP)" Cc: Dan Williams Cc: Jann Horn Cc: Liam Howlett Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Michal Hocko Cc: Muchun Song Cc: Nicholas Piggin Cc: Oscar Salvador Cc: Paolo Bonzini Cc: Pedro Falcato Cc: Suren Baghdasaryan Signed-off-by: Andrew Morton

Merge branch 'vmxon'

2026-04-03T23:15:44Z

* vmxon: KVM: TDX: Fold tdx_bringup() into tdx_hardware_setup() KVM: Bury kvm_{en,dis}able_virtualization() in kvm_main.c once more x86/virt/tdx: Use ida_is_empty() to detect if any TDs may be running x86/virt/tdx: KVM: Consolidate TDX CPU hotplug handling x86/virt/tdx: Tag a pile of functions as __init, and globals as __ro_after_init KVM: x86/tdx: Do VMXON and TDX-Module initialization during subsys init x86/virt/tdx: Drop the outdated requirement that TDX be enabled in IRQ context x86/virt: Add refcounting of VMX/SVM usage to support multiple in-kernel users KVM: x86: Move bulk of emergency virtualizaton logic to virt subsystem KVM: SVM: Move core EFER.SVME enablement to kernel KVM: VMX: Move core VMXON enablement to kernel x86/virt: Force-clear X86_FEATURE_VMX if configuring root VMCS fails KVM: VMX: Unconditionally allocate root VMCSes during boot CPU bringup KVM: x86: Move "kvm_rebooting" to kernel as "virt_rebooting" KVM: VMX: Move architectural "vmcs" and "vmcs_hdr" structures to public vmx.h KVM: x86: Move kvm_rebooting to x86

Merge branch 'misc'

2026-04-03T23:13:20Z

* misc: KVM: x86: Advertise AVX512 Bit Matrix Multiply (BMM) to userspace KVM: x86: Immediately fail the build when possible if required #define is missing KVM: X86: Fix array_index_nospec protection in __pv_send_ipi KVM: x86: Add LAPIC guard in kvm_apic_write_nodecode() KVM: x86: Use kvm_cpu_cap_has() for EFER bits enablement checks KVM: x86: Move some EFER bits enablement to common code KVM: x86: Drop redundant call to kvm_deliver_exception_payload() KVM: x86: Ignore cpuid faulting in SMM KVM: x86: Check for injected exceptions before queuing a debug exception KVM: SVM: Mark module parameters as __ro_after_init for security and performance KVM: Mark halt poll and other module parameters with appropriate memory attributes KVM: x86/pmu: annotate struct kvm_x86_pmu_event_filter with __counted_by() KVM: x86: Zero-initialize temporary fxregs_state buffers in FXSAVE emulation

Merge tag 'kvm-x86-generic-7.0-rc3' of https://github.com/kvm-x86/linux into HEAD

2026-03-11T17:01:55Z

KVM generic changes for 7.0 - Remove a subtle pseudo-overlay of kvm_stats_desc, which, aside from being unnecessary and confusing, triggered compiler warnings due to -Wflex-array-member-not-at-end. - Document that vcpu->mutex is take outside of kvm->slots_lock and kvm->slots_arch_lock, which is intentional and desirable despite being rather unintuitive.

KVM: Bury kvm_{en,dis}able_virtualization() in kvm_main.c once more

2026-03-04T16:53:10Z

Now that TDX handles doing VMXON without KVM's involvement, bury the top-level APIs to enable and disable virtualization back in kvm_main.c. No functional change intended. Reviewed-by: Dan Williams Reviewed-by: Chao Gao Tested-by: Chao Gao Tested-by: Sagi Shahar Link: https://patch.msgid.link/20260214012702.2368778-16-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: x86: Move kvm_rebooting to x86

2026-03-04T16:52:19Z

Move kvm_rebooting, which is only read by x86, to KVM x86 so that it can be moved again to core x86 code. Add a "shutdown" arch hook to facilate setting the flag in KVM x86, along with a pile of comments to provide more context around what KVM x86 is doing and why. Reviewed-by: Chao Gao Acked-by: Dave Hansen Tested-by: Chao Gao Reviewed-by: Dan Williams Tested-by: Sagi Shahar Link: https://patch.msgid.link/20260214012702.2368778-2-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: Mark halt poll and other module parameters with appropriate memory attributes

2026-03-02T22:32:29Z

Add '__read_mostly' to the halt polling parameters (halt_poll_ns, halt_poll_ns_grow, halt_poll_ns_grow_start, halt_poll_ns_shrink) since they are frequently read in hot paths (e.g., vCPU halt handling) but only occasionally updated via sysfs. This improves cache locality on SMP systems. Conversely, mark 'allow_unsafe_mappings' and 'enable_virt_at_load' with '__ro_after_init', as they are set only during module initialization via kernel command line or early sysfs writes and remain constant thereafter. This enhances security by preventing runtime modification and enables compiler optimizations. Signed-off-by: Li RongQing Link: https://patch.msgid.link/20260210062143.1739-1-lirongqing@baidu.com Signed-off-by: Sean Christopherson

KVM: always define KVM_CAP_SYNC_MMU

2026-02-28T14:31:35Z

KVM_CAP_SYNC_MMU is provided by KVM's MMU notifiers, which are now always available. Move the definition from individual architectures to common code. Signed-off-by: Paolo Bonzini