Hi Pavel, On 08/06/2015 02:06 PM, Pavel Fedin wrote: > Tested-by: Pavel Fedin <p.fedin@xxxxxxxxxxx> Many thanks for testing! Best Regards Eric > > Kind regards, > Pavel Fedin > Expert Engineer > Samsung Electronics Research center Russia > >> -----Original Message----- >> From: Eric Auger [mailto:eric.auger@xxxxxxxxxx] >> Sent: Monday, August 03, 2015 6:31 PM >> To: eric.auger@xxxxxx; eric.auger@xxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; >> kvmarm@xxxxxxxxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; christoffer.dall@xxxxxxxxxx; >> marc.zyngier@xxxxxxx >> Cc: linux-kernel@xxxxxxxxxxxxxxx; patches@xxxxxxxxxx; pbonzini@xxxxxxxxxx; >> andre.przywara@xxxxxxx; p.fedin@xxxxxxxxxxx >> Subject: [PATCH v3 0/7] KVM: arm/arm64: gsi routing support >> >> With the advent of GICv3 ITS in-kernel emulation, KVM GSI routing >> appears to be requested. More specifically MSI routing is needed. >> irqchip routing does not sound to be really useful on arm but usage of >> MSI routing also mandates to integrate irqchip routing. The initial >> implementation of irqfd on arm must be upgraded with the integration >> of kvm irqchip.c code and the implementation of its standard hooks >> in the architecture specific part. >> >> In case KVM_SET_GSI_ROUTING ioctl is not called, a default routing >> table with flat irqchip routing entries is built enabling to inject gsi >> corresponding to the SPI indexes seen by the guest. >> >> As soon as KVM_SET_GSI_ROUTING is called, user-space overwrites this >> default routing table and is responsible for building the whole routing >> table. >> >> for arm/arm64 KVM_SET_GSI_ROUTING has a limited support: >> - only applies to KVM_IRQFD and not to KVM_IRQ_LINE >> >> - irqchip routing was tested on Calxeda midway (VFIO with irqfd) >> with and without explicit routing >> - MSI routing without GICv3 ITS was tested using APM Xgene-I >> (qemu VIRTIO-PCI vhost-net without gsi_direct_mapping). >> - MSI routing with GICv3 ITS is *NOT* tested. >> >> Code can be found at > https://git.linaro.org/people/eric.auger/linux.git/shortlog/refs/heads/v4.2-rc4- >> gsi-routing-v3 >> >> It applies on Andre's [PATCH v2 00/15] KVM: arm64: GICv3 ITS emulation >> (http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/355727.html) >> >> History: >> v2 -> v3: >> - eventually got rid of KVM_IRQ_ROUTING_EXTENDED_MSI new type at user >> api level and use KVM_MSI_VALID_DEVID flag instead >> - remove usage of KVM_IRQ_ROUTING_EXTENDED_MSI type at kernel level too. >> - propagate user flags downto the kernel to make sure the userspace >> correctly set devid in GICv3 ITS case (still under discussion) >> >> v1 -> v2: >> - user API changed: >> x devid id passed in kvm_irq_routing_msi >> x kept the new routing entry type: KVM_IRQ_ROUTING_EXTENDED_MSI >> - kvm_host.h: adopt Andre's proposal to replace the msi_msg by a struct >> composed of the msi_msg and devid in kvm_kernel_irq_routing_entry >> - Fix bug reported by Pavel: Added KVM_IRQ_ROUTING_EXTENDED_MSI handling >> in eventfd.c >> - added vgic_v2m_inject_msi in vgic-v2-emul.c as suggested by Andre >> - fix bug reported by Andre: bad setting of msi.flags and msi.devid >> in kvm_send_userspace_msi >> - avoid injecting reserved IRQ numbers in vgic_irqfd_set_irq >> >> RFC -> PATCH: >> - clearly state limited support on arm/arm64: >> KVM_IRQ_LINE not impacted by GSI routing >> - add default routing table feature (new patch file) >> - changed uapi to use padding field area >> - reword api.txt >> >> Eric Auger (7): >> KVM: api: pass the devid in the msi routing entry >> KVM: kvm_host: add devid in kvm_kernel_irq_routing_entry >> KVM: irqchip: convey devid to kvm_set_msi >> KVM: arm/arm64: enable irqchip routing >> KVM: arm/arm64: build a default routing table >> KVM: arm/arm64: enable MSI routing >> KVM: arm: enable KVM_SIGNAL_MSI and MSI routing >> >> Documentation/virtual/kvm/api.txt | 35 ++++++++++--- >> arch/arm/include/asm/kvm_host.h | 2 + >> arch/arm/kvm/Kconfig | 3 ++ >> arch/arm/kvm/Makefile | 2 +- >> arch/arm64/include/asm/kvm_host.h | 1 + >> arch/arm64/kvm/Kconfig | 2 + >> arch/arm64/kvm/Makefile | 2 +- >> include/kvm/arm_vgic.h | 2 - >> include/linux/kvm_host.h | 8 ++- >> include/uapi/linux/kvm.h | 5 +- >> virt/kvm/arm/vgic-v2-emul.c | 16 ++++++ >> virt/kvm/arm/vgic.c | 107 ++++++++++++++++++++++++++++++-------- >> virt/kvm/irqchip.c | 8 ++- >> 13 files changed, 158 insertions(+), 35 deletions(-) >> >> -- >> 1.9.1 > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
