1. 30 Jun, 2017 2 commits
  2. 29 Jun, 2017 3 commits
    • Wanpeng Li's avatar
      KVM: LAPIC: Fix lapic timer injection delay · c8533544
      Wanpeng Li authored
      If the TSC deadline timer is programmed really close to the deadline or
      even in the past, the computation in vmx_set_hv_timer will program the
      absolute target tsc value to vmcs preemption timer field w/ delta == 0,
      then plays a vmentry and an upcoming vmx preemption timer fire vmexit
      dance, the lapic timer injection is delayed due to this duration. Actually
      the lapic timer which is emulated by hrtimer can handle this correctly.
      
      This patch fixes it by firing the lapic timer and injecting a timer interrupt
      immediately during the next vmentry if the TSC deadline timer is programmed
      really close to the deadline or even in the past. This saves ~300 cycles on
      the tsc_deadline_timer test of apic.flat.
      
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Radim Krčmář <rkrcmar@redhat.com>
      Signed-off-by: default avatarWanpeng Li <wanpeng.li@hotmail.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      c8533544
    • Paolo Bonzini's avatar
      KVM: lapic: reorganize restart_apic_timer · a749e247
      Paolo Bonzini authored
      Move the code to cancel the hv timer into the caller, just before
      it starts the hrtimer.  Check availability of the hv timer in
      start_hv_timer.
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      a749e247
    • Paolo Bonzini's avatar
      KVM: lapic: reorganize start_hv_timer · 35ee9e48
      Paolo Bonzini authored
      There are many cases in which the hv timer must be canceled.  Split out
      a new function to avoid duplication.
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      35ee9e48
  3. 28 Jun, 2017 5 commits
  4. 27 Jun, 2017 12 commits
  5. 22 Jun, 2017 7 commits
  6. 15 Jun, 2017 11 commits