On 10 April 2015 at 09:15, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > > > On 10/04/2015 09:48, Eric Auger wrote: >> After the introduction of gicv2m, this series adds missing pieces to >> run VIRTIO-PCI with vhost back-end on ARM. >> >> It is proposed to use the kvm_gsi_direct_mapping modality that sets >> the irqfd gsi to the MSI data value. With that trick there is no need >> to create a KVM MSI routing entry featuring a different gsi. >> >> The only adaptation needed for ARM consists in adding an architecture >> specific function that converts the MSI data field into the actual >> gsi index: there is an offset of 32 between the MSI data content >> (SPI ID) and the SPI index that is passed to KVM_IRQFD ioctl. Once >> this is done we can set the requested flags to enable vhost: >> kvm_gsi_direct_mapping, kvm_msi_via_irqfd_allowed. >> >> This was tested on XGene, on top of Christoffer's series, >> [PATCH 0/3] Add support for for GICv2m and MSIs to arm-virt >> (https://lists.gnu.org/archive/html/qemu-devel/2015-04/msg00881.html) >> >> Best Regards >> >> Eric >> >> v1 -> v2: >> - abort on i386/mips/s390x since those archs do not support >> kvm_gsi_direct_mapping > > Patch 1 is okay. I guess this series will go through some ARM tree. Now that I've applied the gicv2m patches I've also applied this series to target-arm.next. thanks -- PMM _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
