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KVM fixes for v4.9-rc6

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ARM:
  - Fix handling of the 32bit cycle counter
  - Fix cycle counter filtering
 
 x86:
  - Fix a race leading to double unregistering of user notifiers
  - Amend oversight in kvm_arch_set_irq that turned Hyper-V code dead
  - Use SRCU around kvm_lapic_set_vapic_addr
  - Avoid recursive flushing of asynchronous page faults
  - Do not rely on deferred update in KVM_GET_CLOCK, which fixes #GP
  - Let userspace know that KVM_GET_CLOCK is useful with master clock;
    4.9 changed the return value to better match the guest clock, but
    didn't provide means to let guests take advantage of it
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "ARM:
   - Fix handling of the 32bit cycle counter
   - Fix cycle counter filtering

  x86:
   - Fix a race leading to double unregistering of user notifiers
   - Amend oversight in kvm_arch_set_irq that turned Hyper-V code dead
   - Use SRCU around kvm_lapic_set_vapic_addr
   - Avoid recursive flushing of asynchronous page faults
   - Do not rely on deferred update in KVM_GET_CLOCK, which fixes #GP
   - Let userspace know that KVM_GET_CLOCK is useful with master clock;
     4.9 changed the return value to better match the guest clock, but
     didn't provide means to let guests take advantage of it"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: x86: merge kvm_arch_set_irq and kvm_arch_set_irq_inatomic
  KVM: x86: fix missed SRCU usage in kvm_lapic_set_vapic_addr
  KVM: async_pf: avoid recursive flushing of work items
  kvm: kvmclock: let KVM_GET_CLOCK return whether the master clock is in use
  KVM: Disable irq while unregistering user notifier
  KVM: x86: do not go through vcpu in __get_kvmclock_ns
  KVM: arm64: Fix the issues when guest PMCCFILTR is configured
  arm64: KVM: pmu: Fix AArch32 cycle counter access
This commit is contained in:
Linus Torvalds 2016-11-19 13:31:40 -08:00
commit dce9ce3615
9 changed files with 114 additions and 60 deletions
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7
include/uapi/linux/kvm.h
View file

@ -972,12 +972,19 @@ struct kvm_irqfd {
__u8 pad[16];
};
/* For KVM_CAP_ADJUST_CLOCK */
/* Do not use 1, KVM_CHECK_EXTENSION returned it before we had flags. */
#define KVM_CLOCK_TSC_STABLE 2
struct kvm_clock_data {
__u64 clock;
__u32 flags;
__u32 pad[9];
};
/* For KVM_CAP_SW_TLB */
#define KVM_MMU_FSL_BOOKE_NOHV 0
#define KVM_MMU_FSL_BOOKE_HV 1