* Emulated Guest TLB flush IPIs in qemu-kvm
@ 2014-01-09 17:05 ` Hu Yaohui
0 siblings, 0 replies; 2+ messages in thread
From: Hu Yaohui @ 2014-01-09 17:05 UTC (permalink / raw)
To: kvm, linux-kernel, qemu-devel
Hi all.
If the hardware does not support APIC virtualization: kvm_vcpu_kick sends an
host-IPI to the remote vcpu if that vcpu is in guest mode, a VM-exit
(exit reason: external interrupt) will be triggered due to the host-IPI.
Then on VM-entry (inject_pending_event) the guest-IPI is injected. If
that IPI is a TLB flush IPI,
what will happen if the target vcpu access the stale tlb entry before
the host-IPI arrives?
Thanks for your time!
Best Wishes,
Yaohui Hu
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Qemu-devel] Emulated Guest TLB flush IPIs in qemu-kvm
@ 2014-01-09 17:05 ` Hu Yaohui
0 siblings, 0 replies; 2+ messages in thread
From: Hu Yaohui @ 2014-01-09 17:05 UTC (permalink / raw)
To: kvm, linux-kernel, qemu-devel
Hi all.
If the hardware does not support APIC virtualization: kvm_vcpu_kick sends an
host-IPI to the remote vcpu if that vcpu is in guest mode, a VM-exit
(exit reason: external interrupt) will be triggered due to the host-IPI.
Then on VM-entry (inject_pending_event) the guest-IPI is injected. If
that IPI is a TLB flush IPI,
what will happen if the target vcpu access the stale tlb entry before
the host-IPI arrives?
Thanks for your time!
Best Wishes,
Yaohui Hu
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2014-01-09 17:05 UTC | newest]
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