Re: [PATCH 1/3] KVM: x86: work around infinite loop in microcode when #AC is delivered

On Tue, Nov 10, 2015 at 01:22:52PM +0100, Paolo Bonzini wrote: > From: Eric Northup > > It was found that a guest can DoS a host by triggering an infinite > stream of "alignment check" (#AC) exceptions. This causes the > microcode to enter an infinite loop where the core

[PATCH 1/3] KVM: x86: work around infinite loop in microcode when #AC is delivered

From: Eric Northup It was found that a guest can DoS a host by triggering an infinite stream of "alignment check" (#AC) exceptions. This causes the microcode to enter an infinite loop where the core never receives another interrupt. The host kernel panics pretty quickly