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https://github.com/edk2-porting/linux-next.git
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29217a4746
On the bare metal, enabling X2APIC mode requires interrupt remapping function which helps to deliver irq to cpu with 32-bit APIC ID. Hyper-V doesn't provide interrupt remapping function so far and Hyper-V MSI protocol already supports to deliver interrupt to the CPU whose virtual processor index is more than 255. IO-APIC interrupt still has 8-bit APIC ID limitation. This patch is to add Hyper-V stub IOMMU driver in order to enable X2APIC mode successfully in Hyper-V Linux guest. The driver returns X2APIC interrupt remapping capability when X2APIC mode is available. Otherwise, it creates a Hyper-V irq domain to limit IO-APIC interrupts' affinity and make sure cpus assigned with IO-APIC interrupt have 8-bit APIC ID. Define 24 IO-APIC remapping entries because Hyper-V only expose one single IO-APIC and one IO-APIC has 24 pins according IO-APIC spec( https://pdos.csail.mit.edu/6.828/2016/readings/ia32/ioapic.pdf). Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
36 lines
1.6 KiB
Makefile
36 lines
1.6 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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obj-$(CONFIG_IOMMU_API) += iommu.o
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obj-$(CONFIG_IOMMU_API) += iommu-traces.o
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obj-$(CONFIG_IOMMU_API) += iommu-sysfs.o
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obj-$(CONFIG_IOMMU_DEBUGFS) += iommu-debugfs.o
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obj-$(CONFIG_IOMMU_DMA) += dma-iommu.o
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obj-$(CONFIG_IOMMU_IO_PGTABLE) += io-pgtable.o
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obj-$(CONFIG_IOMMU_IO_PGTABLE_ARMV7S) += io-pgtable-arm-v7s.o
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obj-$(CONFIG_IOMMU_IO_PGTABLE_LPAE) += io-pgtable-arm.o
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obj-$(CONFIG_IOMMU_IOVA) += iova.o
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obj-$(CONFIG_OF_IOMMU) += of_iommu.o
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obj-$(CONFIG_MSM_IOMMU) += msm_iommu.o
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obj-$(CONFIG_AMD_IOMMU) += amd_iommu.o amd_iommu_init.o
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obj-$(CONFIG_AMD_IOMMU_DEBUGFS) += amd_iommu_debugfs.o
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obj-$(CONFIG_AMD_IOMMU_V2) += amd_iommu_v2.o
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obj-$(CONFIG_ARM_SMMU) += arm-smmu.o
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obj-$(CONFIG_ARM_SMMU_V3) += arm-smmu-v3.o
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obj-$(CONFIG_DMAR_TABLE) += dmar.o
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obj-$(CONFIG_INTEL_IOMMU) += intel-iommu.o intel-pasid.o
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obj-$(CONFIG_INTEL_IOMMU_DEBUGFS) += intel-iommu-debugfs.o
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obj-$(CONFIG_INTEL_IOMMU_SVM) += intel-svm.o
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obj-$(CONFIG_IPMMU_VMSA) += ipmmu-vmsa.o
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obj-$(CONFIG_IRQ_REMAP) += intel_irq_remapping.o irq_remapping.o
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obj-$(CONFIG_MTK_IOMMU) += mtk_iommu.o
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obj-$(CONFIG_MTK_IOMMU_V1) += mtk_iommu_v1.o
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obj-$(CONFIG_OMAP_IOMMU) += omap-iommu.o
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obj-$(CONFIG_OMAP_IOMMU_DEBUG) += omap-iommu-debug.o
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obj-$(CONFIG_ROCKCHIP_IOMMU) += rockchip-iommu.o
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obj-$(CONFIG_TEGRA_IOMMU_GART) += tegra-gart.o
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obj-$(CONFIG_TEGRA_IOMMU_SMMU) += tegra-smmu.o
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obj-$(CONFIG_EXYNOS_IOMMU) += exynos-iommu.o
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obj-$(CONFIG_FSL_PAMU) += fsl_pamu.o fsl_pamu_domain.o
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obj-$(CONFIG_S390_IOMMU) += s390-iommu.o
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obj-$(CONFIG_QCOM_IOMMU) += qcom_iommu.o
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obj-$(CONFIG_HYPERV_IOMMU) += hyperv-iommu.o
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