This series adds the interrupt remapping support for amd-iommu device. IOMMU spec is available at: https://support.amd.com/TechDocs/48882_IOMMU.pdf
To enable the interrupt remap use below qemu cli # $QEMU \ -device amd-iommu,intremap=on I have tested FC-28 and Ubuntu 18.04 guest. Linux guest bootup log shows the interrupt remap supports: [root@localhost ~]# dmesg | grep -i AMD-Vi [ 0.001761] AMD-Vi: Using IVHD type 0x10 [ 0.003051] AMD-Vi: device: 00:03.0 cap: 0040 seg: 0 flags: d1 info 0000 [ 0.004007] AMD-Vi: mmio-addr: 00000000fed80000 [ 0.004874] AMD-Vi: DEV_ALL flags: 00 [ 0.006236] AMD-Vi: DEV_SPECIAL(IOAPIC[0]) devid: 00:14.0 [ 0.667943] AMD-Vi: Found IOMMU at 0000:00:03.0 cap 0x40 [ 0.668727] AMD-Vi: Extended features (0x29d3): [ 0.669874] AMD-Vi: Interrupt remapping enabled [ 0.671074] AMD-Vi: Lazy IO/TLB flushing enabled cat /proc/interrupts confirms that its using IR [root@localhost ~]# cat /proc/interrupts CPU0 0: 40 IR-IO-APIC 2-edge timer 1: 9 IR-IO-APIC 1-edge i8042 4: 1770 IR-IO-APIC 4-edge ttyS0 7: 0 IR-IO-APIC 7-edge parport0 8: 1 IR-IO-APIC 8-edge rtc0 9: 0 IR-IO-APIC 9-fasteoi acpi 12: 15 IR-IO-APIC 12-edge i8042 16: 0 IR-IO-APIC 16-fasteoi i801_smbus 24: 0 PCI-MSI 49152-edge AMD-Vi 25: 13070 IR-PCI-MSI 512000-edge ahci[0000:00:1f.2] 26: 86 IR-PCI-MSI 32768-edge enp0s2-rx-0 27: 139 IR-PCI-MSI 32769-edge enp0s2-tx-0 28: 1 IR-PCI-MSI 32770-edge enp0s2 NMI: 0 Non-maskable interrupts LOC: 26686 Local timer interrupts SPU: 0 Spurious interrupts ... ... Cc: "Michael S. Tsirkin" <m...@redhat.com> Cc: Paolo Bonzini <pbonz...@redhat.com> Cc: Richard Henderson <r...@twiddle.net> Cc: Eduardo Habkost <ehabk...@redhat.com> Cc: Marcel Apfelbaum <marcel.apfelb...@gmail.com> Cc: Tom Lendacky <thomas.lenda...@amd.com> Cc: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com> Changes since v1: - move vtd_generate_msi_message to common code - fix the dest_mode bit extraction - add more comments explaining why we add the special device - some minor cleanups based on Peter's feedbacks Brijesh Singh (8): x86_iommu: move the kernel-irqchip check in common code x86_iommu: move vtd_generate_msi_message in common file x86_iommu/amd: remove V=1 check from amdvi_validate_dte() x86_iommu/amd: Prepare for interrupt remap support x86_iommu/amd: Add interrupt remap support when VAPIC is not enabled i386: acpi: add IVHD device entry for IOAPIC x86_iommu/amd: Add interrupt remap support when VAPIC is enabled x86_iommu/amd: Enable Guest virtual APIC support hw/i386/acpi-build.c | 32 +++- hw/i386/amd_iommu.c | 402 +++++++++++++++++++++++++++++++++++++++++- hw/i386/amd_iommu.h | 101 ++++++++++- hw/i386/intel_iommu.c | 39 +--- hw/i386/trace-events | 14 ++ hw/i386/x86-iommu.c | 33 ++++ include/hw/i386/intel_iommu.h | 59 ------- include/hw/i386/x86-iommu.h | 66 +++++++ 8 files changed, 638 insertions(+), 108 deletions(-) -- 2.7.4
