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Re: [Qemu-devel] [PATCH v2 00/13] IOMMU: Enable interrupt remapping for
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH v2 00/13] IOMMU: Enable interrupt remapping for Intel IOMMU |
Date: |
Mon, 11 Apr 2016 15:32:18 +0300 |
On Mon, Apr 11, 2016 at 05:19:10PM +0800, Peter Xu wrote:
> 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 basic network (still do not support kvm-ioapic,
> so we need to specify kernel-irqchip=off here):
>
> $ qemu-system-x86_64 -M q35,iommu=on,intr=on,kernel-irqchip=off \
> -enable-kvm -m 1024 -s \
> -monitor telnet::3333,server,nowait \
> -netdev user,id=user.0,hostfwd=tcp::5555-:22 \
> -device virtio-net-pci,netdev=user.0 \
> /var/lib/libvirt/images/vm1.qcow2
>
> When guest boots, we can verify whether IR enabled by grepping the
> dmesg like:
>
> address@hidden ~]# 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 only two devices are supported:
>
> - Emulated IOAPIC device
> - PCI Devices
>
> TODO List:
>
> - kvm-ioapic support
This is probably a must. I don't think we can merge this
as long as it breaks kvm.
> - vhost support
dataplane as well?
> - pass through device 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):
> q35: add "int-remap" flag to enable intr
> acpi: enable INTR for DMAR report structure
> 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
> ioapic-common: add iommu for IOAPICCommonState
> intel_iommu: add IR translation faults defines
> intel_iommu: ioapic: IR support for emulated IOAPIC
> intel_iommu: Add support for PCI MSI remap
>
> hw/core/machine.c | 21 ++
> hw/i386/acpi-build.c | 42 ++--
> hw/i386/intel_iommu.c | 400
> +++++++++++++++++++++++++++++++++++++-
> hw/i386/intel_iommu_internal.h | 23 +++
> hw/intc/ioapic.c | 36 +++-
> hw/intc/ioapic_common.c | 2 +
> include/hw/acpi/acpi-defs.h | 15 ++
> include/hw/boards.h | 1 +
> include/hw/i386/intel_iommu.h | 120 ++++++++++++
> include/hw/i386/ioapic_internal.h | 3 +
> include/hw/pci/msi.h | 4 +
> 11 files changed, 647 insertions(+), 20 deletions(-)
>
> --
> 2.4.3
- Re: [Qemu-devel] [PATCH v2 12/13] intel_iommu: ioapic: IR support for emulated IOAPIC, (continued)
- Re: [Qemu-devel] [PATCH v2 12/13] intel_iommu: ioapic: IR support for emulated IOAPIC, Jan Kiszka, 2016/04/12
- Re: [Qemu-devel] [PATCH v2 12/13] intel_iommu: ioapic: IR support for emulated IOAPIC, Peter Xu, 2016/04/12
- Re: [Qemu-devel] [PATCH v2 12/13] intel_iommu: ioapic: IR support for emulated IOAPIC, Jan Kiszka, 2016/04/12
- Re: [Qemu-devel] [PATCH v2 12/13] intel_iommu: ioapic: IR support for emulated IOAPIC, Peter Xu, 2016/04/13
- Re: [Qemu-devel] [PATCH v2 12/13] intel_iommu: ioapic: IR support for emulated IOAPIC, Peter Xu, 2016/04/13
- Re: [Qemu-devel] [PATCH v2 12/13] intel_iommu: ioapic: IR support for emulated IOAPIC, Jan Kiszka, 2016/04/13
- Re: [Qemu-devel] [PATCH v2 12/13] intel_iommu: ioapic: IR support for emulated IOAPIC, Peter Xu, 2016/04/13
[Qemu-devel] [PATCH v2 13/13] intel_iommu: Add support for PCI MSI remap, Peter Xu, 2016/04/11
Re: [Qemu-devel] [PATCH v2 00/13] IOMMU: Enable interrupt remapping for Intel IOMMU,
Michael S. Tsirkin <=
Re: [Qemu-devel] [PATCH v2 00/13] IOMMU: Enable interrupt remapping for Intel IOMMU, Alex Williamson, 2016/04/11