RFC pic/ioapic/irqchip cleanups + minor fixes

My attempt to further cleanup pic/ioapic checks using irqchip_mode + other cleanups in that area.

The goal is to only check against irqchip_mode and not to rely on vpic/vioapic variables anymore to test for existence of pic/ioapic. This will avoid any possible races when creating the kernel irqchip fails.

Feel free to nack if a a certain cleanup is not worth it.

David Hildenbrand (21):
KVM: x86: race between KVM_SET_GSI_ROUTING and KVM_CREATE_IRQCHIP
KVM: x86: check against irqchip_mode in kvm_set_routing_entry()
KVM: x86: check against irqchip_mode in pic_in_kernel()
KVM: x86: check against irqchip_mode in ioapic_in_kernel()
KVM: x86: get rid of pic_irqchip()
KVM: x86: get rid of ioapic_irqchip()
KVM: x86: use ioapic_in_kernel() to check for ioapic existence
KVM: x86: remove duplicate checks for ioapic
KVM: x86: convert kvm_(set|get)_ioapic() into void
KVM: x86: don't take kvm->irq_lock when creating IRQCHIP
KVM: x86: push usage of slots_lock down
KVM: x86: KVM_IRQCHIP_PIC_MASTER only has 8 pins
KVM: x86: remove all-vcpu request from kvm_ioapic_init()
KVM: x86: directly call kvm_make_scan_ioapic_request() in ioapic.c
KVM: x86: rename kvm_vcpu_request_scan_ioapic()
KVM: x86: drop goto label in kvm_set_routing_entry()
KVM: x86: simplify pic_unlock()
KVM: x86: make kvm_pic_reset() static
KVM: x86: drop picdev_in_range()
KVM: x86: set data directly in picdev_read()
KVM: x86: simplify pic_ioport_read()

 arch/x86/include/asm/kvm_host.h |  1 +
 arch/x86/kvm/i8259.c            | 70 +++++++++++++++--------------------------
 arch/x86/kvm/ioapic.c           | 28 ++++++-----------
 arch/x86/kvm/ioapic.h           | 14 ++-------
 arch/x86/kvm/irq.c              |  2 +-
 arch/x86/kvm/irq.h              | 20 +++++-------
 arch/x86/kvm/irq_comm.c         | 39 +++++++++--------------
 arch/x86/kvm/x86.c              | 36 +++++++++------------
 include/linux/kvm_host.h        |  4 +--
 virt/kvm/eventfd.c              |  4 +--
 virt/kvm/kvm_main.c             |  3 ++
 11 files changed, 85 insertions(+), 136 deletions(-)

2.9.3