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Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route
From: |
Benjamin Herrenschmidt |
Subject: |
Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route |
Date: |
Sat, 22 Jun 2013 07:54:47 +1000 |
On Fri, 2013-06-21 at 15:46 +0200, Alexander Graf wrote:
> Not sure. We could just declare a "direct virq==irq" mode in which
> msi.data == virq == irq. No need for any translation then.
Maybe. Beware that MSI data is only 16-bit on the wire but we may not
care here.
One thing I'm not 100% certain of is how Alexey makes all that work with
VFIO since the MSI address/data in the device shall not be the qemu
"cooked up" ones, but the real HW ones (corresponding to a different
host interrupt).
How do that work ?
Cheers,
Ben.
[Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Alexey Kardashevskiy, 2013/06/21
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Alexander Graf, 2013/06/21
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Benjamin Herrenschmidt, 2013/06/21
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Alexander Graf, 2013/06/21
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Benjamin Herrenschmidt, 2013/06/21
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Alexander Graf, 2013/06/21
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route,
Benjamin Herrenschmidt <=
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Alexander Graf, 2013/06/21
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Benjamin Herrenschmidt, 2013/06/21
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Alex Williamson, 2013/06/21
- Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route, Benjamin Herrenschmidt, 2013/06/21
[Qemu-ppc] [PATCH 3/3] KVM: PPC: enable irqfd, Alexey Kardashevskiy, 2013/06/21