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

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Pull kvm fixes from Paolo Bonzini:
 "Fixes for kvm on x86:

   - new selftests

   - fixes for migration with HyperV re-enlightenment enabled

   - fix RCU/SRCU usage

   - fixes for local_irq_restore misuse false positive"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  documentation/kvm: additional explanations on KVM_SET_BOOT_CPU_ID
  x86/kvm: Fix broken irq restoration in kvm_wait
  KVM: X86: Fix missing local pCPU when executing wbinvd on all dirty pCPUs
  KVM: x86: Protect userspace MSR filter with SRCU, and set atomically-ish
  selftests: kvm: add set_boot_cpu_id test
  selftests: kvm: add _vm_ioctl
  selftests: kvm: add get_msr_index_features
  selftests: kvm: Add basic Hyper-V clocksources tests
  KVM: x86: hyper-v: Don't touch TSC page values when guest opted for re-enlightenment
  KVM: x86: hyper-v: Track Hyper-V TSC page status
  KVM: x86: hyper-v: Prevent using not-yet-updated TSC page by secondary CPUs
  KVM: x86: hyper-v: Limit guest to writing zero to HV_X64_MSR_TSC_EMULATION_STATUS
  KVM: x86/mmu: Store the address space ID in the TDP iterator
  KVM: x86/mmu: Factor out tdp_iter_return_to_root
  KVM: x86/mmu: Fix RCU usage when atomically zapping SPTEs
  KVM: x86/mmu: Fix RCU usage in handle_removed_tdp_mmu_page
This commit is contained in:
Linus Torvalds
2021-03-19 14:10:07 -07:00
parent 3149860dc7 9ce3746d64
commit ecd8ee7f9c
18 changed files with 808 additions and 121 deletions
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9
Documentation/virt/kvm/api.rst
View File

@@ -1495,7 +1495,8 @@ Fails if any VCPU has already been created.
Define which vcpu is the Bootstrap Processor (BSP). Values are the same
as the vcpu id in KVM_CREATE_VCPU. If this ioctl is not called, the default
is vcpu 0.
is vcpu 0. This ioctl has to be called before vcpu creation,
otherwise it will return EBUSY error.
4.42 KVM_GET_XSAVE
@@ -4806,8 +4807,10 @@ If an MSR access is not permitted through the filtering, it generates a
allows user space to deflect and potentially handle various MSR accesses
into user space.
If a vCPU is in running state while this ioctl is invoked, the vCPU may
experience inconsistent filtering behavior on MSR accesses.
Note, invoking this ioctl with a vCPU is running is inherently racy. However,
KVM does guarantee that vCPUs will see either the previous filter or the new
filter, e.g. MSRs with identical settings in both the old and new filter will
have deterministic behavior.
4.127 KVM_XEN_HVM_SET_ATTR
--------------------------