Re: [PATCH v3 2/2] KVM: x86/xen: Stop Xen timer before changing IRQ

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On 8/9/22 11:22, David Woodhouse wrote:
On Mon, 2022-08-08 at 14:06 -0500, Coleman Dietsch wrote:
Stop Xen timer (if it's running) prior to changing the IRQ vector and
potentially (re)starting the timer. Changing the IRQ vector while the
timer is still running can result in KVM injecting a garbage event, e.g.
vm_xen_inject_timer_irqs() could see a non-zero xen.timer_pending from
a previous timer but inject the new xen.timer_virq.

Hm, wasn't that already addressed in the first patch I saw, which just
called kvm_xen_stop_timer() unconditionally before (possibly) setting
it up again?

Which patch is that?

Paolo




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