Hi Peter,
series no longer applies to git master. What was the baseline? Do you
have a public git repo as well?
Jan
On 2016-04-14 20:31, Peter Xu wrote:
> v3 changes (all patch numbers corresponds to v2):
> - patch 1 (-> v3 patch 13)
> - move to the end of series [Alex]
> - patch 10 (dropped)
> - drop this one, since re-worked on IOAPIC support, so we do not
> need this any more.
> - patch 12 (-> v3 patch 10)
> - leverage MSI path for IOAPIC IR [Jan]
> - patch 13 (v3 -> patch 9)
> - remove vtd_interrupt_remap_msi() declaration by reordering the
> functions [mst]
> - vtd_generate_msi_message(): init msg using {}, remove FIXME
> [mst]
> - new patches
> - v3 patch 11: introduce ioapic_entry_parse() helper function
> - v3 patch 12: add support for kernel-irqchip=split. This needs
> more reviews, logically this should enable lots of things:
> splitted irqchip, irqfd, vhost, and irqfd support for
> passthrough devices (not tested). Please refer to the patch for
> more information.
>
> v2 changes:
> - patch 1
> - rename "int_remap" to "intr" in several places [Marcel]
> - remove "Intel" specific words in desc or commit message, prepare
> itself with further AMD support [Marcel]
> - avoid using object_property_get_bool() [Marcel]
> - patch 5
> - use PCI bus number 0xff rather than 0xf0 for the IOAPIC scope
> definition. (please let me know if anyone knows how I can avoid
> user using PCI bus number 0xff... TIA)
> - patch 11
> - fix comments [Marcel]
> - all
> - remove intr_supported variable [Marcel]
>
> This patchset provide very basic functionalities for interrupt
> remapping (IR) support of the emulated Intel IOMMU device.
>
> By default, IR is disabled to be better compatible with current
> QEMU. To enable IR, we can using the following command to boot a
> IR-supported VM with virtio-net device with vhost (still do not
> support kvm-ioapic, so we need to specify kernel-irqchip={split|off}
> here):
>
> $ qemu-system-x86_64 -M q35,iommu=on,intr=on,kernel-irqchip=split \
> -enable-kvm -m 1024 \
> -netdev tap,id=net0,vhost=on \
> -device virtio-net-pci,netdev=user.0 \
> -monitor telnet::3333,server,nowait \
> /var/lib/libvirt/images/vm1.qcow2
>
> When guest boots, we can verify whether IR enabled by grepping the
> dmesg like:
>
> [root@localhost ~]# journalctl -k | grep "DMAR-IR"
> Feb 19 11:21:23 localhost.localdomain kernel: DMAR-IR: IOAPIC id 0 under DRHD
> base 0xfed90000 IOMMU 0
> Feb 19 11:21:23 localhost.localdomain kernel: DMAR-IR: Enabled IRQ remapping
> in xapic mode
>
> Currently supported devices:
>
> - Emulated/Splitted irqchip
> - Generic PCI Devices
> - vhost devices
> - pass through device support? Not tested, but suppose it should work.
>
> TODO List:
>
> - kvm-ioapic support (?)
> - EIM support
> - IR fault reporting
> - source-id validation for IRTE
> - IRTE cache and better queued invalidation
> - migration support (for IOMMU as general?)
> - more?
>
> Peter Xu (13):
> intel_iommu: allow queued invalidation for IR
> intel_iommu: set IR bit for ECAP register
> acpi: add DMAR scope definition for root IOAPIC
> intel_iommu: define interrupt remap table addr register
> intel_iommu: handle interrupt remap enable
> intel_iommu: define several structs for IOMMU IR
> intel_iommu: provide helper function vtd_get_iommu
> intel_iommu: add IR translation faults defines
> intel_iommu: Add support for PCI MSI remap
> q35: ioapic: add support for emulated IOAPIC IR
> ioapic: introduce ioapic_entry_parse() helper
> q35: ioapic: add support for split irqchip and irqfd
> q35: add "int-remap" flag to enable intr
>
> hw/core/machine.c | 20 +++
> hw/i386/acpi-build.c | 24 ++-
> hw/i386/intel_iommu.c | 343
> +++++++++++++++++++++++++++++++++++++-
> hw/i386/intel_iommu_internal.h | 23 +++
> hw/i386/pc.c | 3 +
> hw/intc/ioapic.c | 116 ++++++++-----
> hw/intc/ioapic_common.c | 4 +
> hw/pci-host/q35.c | 4 +
> include/hw/acpi/acpi-defs.h | 15 ++
> include/hw/i386/apic-msidef.h | 1 +
> include/hw/i386/intel_iommu.h | 117 +++++++++++++
> include/hw/i386/ioapic_internal.h | 6 +
> include/hw/i386/pc.h | 4 +
> include/hw/pci-host/q35.h | 9 +
> 14 files changed, 635 insertions(+), 54 deletions(-)
>
