Messages in this thread | | | Subject | Re: [PATCH 0/2] KVM: x86: limit interactions between IOAPIC and LAPIC | From | Alex Williamson <> | Date | Wed, 29 Jul 2015 14:00:12 -0600 |
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On Wed, 2015-07-29 at 15:37 +0200, Paolo Bonzini wrote: > Inspired by the split irqchip patches, this series limits the > IOAPIC<->LAPIC to the EOI exit bitmap that is inferred from the > redirection table. > > TMR is entirely handled within the local APIC, and no global copy > of the IOAPIC-handled vectors is necessary anymore. This makes > it simpler to introduce a userspace IOAPIC. > > Tested with ioapic.flat for now, planning to do more complete tests > tomorrow. The most interesting test to do here is an assigned device > that uses INTX, so I am CCing Alex Williamson for a heads up.
Tested Windows and Linux guests with assigned devices restricted to INTx mode, no obvious regression. Thanks,
Alex
> Paolo Bonzini (2): > KVM: x86: set TMR when the interrupt is accepted > KVM: x86: store IOAPIC-handled vectors in each VCPU > > arch/x86/include/asm/kvm_host.h | 3 ++- > arch/x86/kvm/ioapic.c | 27 ++++----------------------- > arch/x86/kvm/ioapic.h | 11 +---------- > arch/x86/kvm/lapic.c | 29 ++++++++++++++++++----------- > arch/x86/kvm/lapic.h | 1 - > arch/x86/kvm/svm.c | 2 +- > arch/x86/kvm/vmx.c | 3 ++- > arch/x86/kvm/x86.c | 11 +++-------- > 8 files changed, 31 insertions(+), 56 deletions(-) >
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