tree c9d34283e272a3244cf42c900eb226bb1aa35e01
parent b2a05feff274e007abd7cda0d2cdae7fdf5cbb0a
author Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> 1505230962 -0500
committer Radim Krčmář <rkrcmar@redhat.com> 1505401513 +0200

KVM: SVM: Add irqchip_split() checks before enabling AVIC

SVM AVIC hardware accelerates guest write to APIC_EOI register
(for edge-trigger interrupt), which means it does not trap to KVM.

So, only enable SVM AVIC only in split irqchip mode.
(e.g. launching qemu w/ option '-machine kernel_irqchip=split').

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Fixes: 44a95dae1d22 ("KVM: x86: Detect and Initialize AVIC support")
[Removed pr_debug - Radim.]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>