KVM: x86: Add module parameter for lapic periodic timer limit
Certain guests, specifically RTOSes, request faster periodic timers than what we allow by default. Add a module parameter to adjust the limit for non-standard setups. Also add a rate-limited warning in case the guest requested more. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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