[PATCH 0/2] KVM: x86: fix edge EOI and IOAPIC reconfig race

From: Radim KrÄmÃÅ
Date: Thu Aug 13 2015 - 09:46:20 EST

[1/2] changes sync_pir_to_irr interface to avoid a definitely
superfluous KVM_REQ_EVENT in [2/2]. It's possible that we don't need
KVM_REQ_EVENT, but a slight slowdown in execution is worth the time
needed for a proof. (A quick test showed that KVM_REQ_EVENT is always
already set if sync_pir_to_irr does something.)

[2/2] is applicable to userspace split IOAPIC as well, but I hope that
we want it to work like normal IOAPIC (no ACK for edge irq), so I
haven't fixed it.

Radim KrÄmÃÅ (2):
KVM: x86: return bool from x86_ops.sync_pir_to_irr
KVM: x86: fix edge EOI and IOAPIC reconfig race

arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/kvm/ioapic.c | 7 ++++++-
arch/x86/kvm/svm.c | 4 ++--
arch/x86/kvm/vmx.c | 12 +++++++-----
4 files changed, 16 insertions(+), 9 deletions(-)


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