linux-kernel - [PATCH 0/2] KVM: x86: limit interactions between IOAPIC and LAPIC

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Message-Id: <1438177055-26764-1-git-send-email-pbonzini@redhat.com>
Date:	Wed, 29 Jul 2015 15:37:33 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:	alex.williamson@...hat.com, yang.z.zhang@...el.com,
	srutherford@...el.com
Subject: [PATCH 0/2] KVM: x86: limit interactions between IOAPIC and LAPIC

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.

Paolo

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(-)

-- 
1.8.3.1

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