On 2012-03-22 00:17, Jan Kiszka wrote: > Some half a year ago when I posted my first attempt to refactor MSI > for KVM support, we came to the conclusion that it might suffice to do > transparent dynamic routing for user-space injected MSI messages. These > two patches now implement such an approach for upstream. > > As QEMU does not yet include irqfd support (for vhost) or pci device > assignment, this is already enough to enable MSI over the in-kernel > irqchip. Still, this is only RFC as it is just lightly tested and should > primarily collect feedback regarding the direction. If it's fine, I'd > like to base further qemu-kvm refactorings and upstream preparations on > top of such a series. > > Also, I'd like to reanimate my KVM patch to provide direct MSI injection > in future kernels so that we do not need to take this long path here > forever. > > Jan Kiszka (2): > kvm: Introduce basic MSI support in-kernel irqchips > KVM: x86: Wire up MSI support for in-kernel irqchip > > hw/apic.c | 3 + > hw/kvm/apic.c | 33 ++++++++++- > hw/pc.c | 5 -- > kvm-all.c | 171 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++- > kvm.h | 1 + > 5 files changed, 205 insertions(+), 8 deletions(-) > Anyone any comments? I think this series could open the door for kernel_irqchip=on as default in QEMU 1.1. Jan
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