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Code Issues Releases Packages Activity

ARM:

Browse source 
- Take a reference on the last IRQ loaded into an LR to prevent it
   from being freed while running the guest (Marc Zyngier)
 
 - Ensure that the ITS MOVALL command only affects LPIs that were
   previously affined to the source redistributor (Marc Zyngier)
 
 - Fix + test for honoring the host's trap configuration when running
   non-protected VMs while KVM is in protected mode (Fuad Tabba)
 
 - Use the host stage-1 mapping granularity for VM_PFNMAP mappings at
   stage-2 (Mostafa Saleh)
 
 x86:
 
 Various bugfixes where the guest could do stupid things on purpose to
 cause problems in the host:
 
 - Failed VMRUNs can cause pending TLB flushes to be dropped, and in
   general some actions done through VMCB control fields have to be redone
   if VMRUN fails
 
 - Toggling MSR interceptions or eVMCS execution controls can cause the
   host to use a stale MSR permission bitmap
 
 - Bad page tables can cause a WARN.
 
 Also fix issues in last week's pull request (my fault, for changing
 email workflow and thus missing feedback sent to kvm@ but not LKML).
 
 Generic:
 
 - Take kvm_lock when creating vCPUs. For almost two decades everybody
   thought it was not done for some unspecified performance reasons, but
   in reality it was only done because kvm_lock was originally a spinlock.
   This is a better fix than 97d65b544f ("KVM: Check for duplicate vcpu_id
   as early as possible", from the 7.3 merge window), and does not waste
   2K per VM, hence its inclusion here.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "The most intrusive change is reverting a commit from 7.3-rc1 that made
  struct kvm a bit too large, and fixing the same issue otherwise.

  There are again a lot of selftests lines; the sheer number of commits
  is not small but I don't expect much more for 7.3 due to people
  travelling to Plumbers next week.

  ARM:

   - Take a reference on the last IRQ loaded into an LR to prevent it
     from being freed while running the guest (Marc Zyngier)

   - Ensure that the ITS MOVALL command only affects LPIs that were
     previously affined to the source redistributor (Marc Zyngier)

   - Fix + test for honoring the host's trap configuration when running
     non-protected VMs while KVM is in protected mode (Fuad Tabba)

   - Use the host stage-1 mapping granularity for VM_PFNMAP mappings at
     stage-2 (Mostafa Saleh)

  x86:

  Various bugfixes where the guest could do stupid things on purpose to
  cause problems in the host:

   - Failed VMRUNs can cause pending TLB flushes to be dropped, and in
     general some actions done through VMCB control fields have to be
     redone if VMRUN fails

   - Toggling MSR interceptions or eVMCS execution controls can cause
     the host to use a stale MSR permission bitmap

   - Bad page tables can cause a WARN.

  Also fix issues in last week's pull request (my fault, for changing
  email workflow and thus missing feedback sent to kvm@ but not LKML).

  Generic:

   - Take kvm_lock when creating vCPUs. For almost two decades everybody
     thought it was not done for some unspecified performance reasons,
     but in reality it was only done because kvm_lock was originally a
     spinlock.

     This is a better fix than 97d65b544f ("KVM: Check for duplicate
     vcpu_id as early as possible", from the 7.3 merge window), and does
     not waste 2K per VM, hence its inclusion here"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (29 commits)
  KVM: arm64: Use stage-1 leaf size for VM_PFNMAP
  KVM: arm64: selftests: Check a feature hidden in an ID register is UNDEF
  KVM: arm64: Use the host's HCR_EL2 for non-protected VMs in pKVM
  KVM: arm64: Clear HCR_EL2.RW for 32-bit non-protected vCPUs
  KVM: arm64: Apply the fine-grained UNDEFs without FEAT_FGT
  KVM: arm64: vgic-its: Fix MOVALL handling of source redistributor
  KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq
  KVM: arm64: vgic: Allow last_lr_irq to be NULL when LRs are not overflowing
  KVM: SEV: Do cache maintenance on the source VM *before* clearing SEV state
  KVM: SEV: Nullify "have run CPUs" mask pointer when freeing it
  KVM: selftests: Extend nested x2APIC test to validate using eVMCS for vmcs12
  KVM: selftests: Extend nested x2APIC test to validate disabling x2APIC virt
  KVM: selftests: Verify that L0's TPR doesn't get clobbered
  KVM: selftests: Run the nested x2APIC with and without APICv being inhibited in L2
  KVM: selftests: Add x2APIC MSR test for inhibiting APICv while nested
  KVM: nVMX: Force MSR bitmap refresh if runtime eVMCS controls are modified
  KVM: SVM: Use the active VMCB's MSR bitmap when checking if MSR is intercepted
  KVM: SVM: Sync guest's PERF_CNTR_GLOBAL_CTL from h/w only on successful VMRUN
  KVM: SVM: Don't mark ASID fields as dirty when setting control.tlb_ctl
  KVM: SVM: Update control fields on #VMEXIT if and only if VMRUN succeeded
  ...
This commit is contained in:
Linus Torvalds 2026-10-01 10:57:19 -07:00
commit a940b03cee
24 changed files with 554 additions and 165 deletions
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