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Commit 4daace0d authored by Jake Oshins's avatar Jake Oshins Committed by Bjorn Helgaas
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PCI: hv: Add paravirtual PCI front-end for Microsoft Hyper-V VMs 

Add a new driver which exposes a root PCI bus whenever a PCI Express device
is passed through to a guest VM under Hyper-V.  The device can be single-
or multi-function.  The interrupts for the devices are managed by an IRQ
domain, implemented within the driver.

[bhelgaas: fold in race condition fix (http://lkml.kernel.org/r/1456340196-13717-1-git-send-email-jakeo@microsoft.com)

]
Signed-off-by: default avatarJake Oshins <jakeo@microsoft.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 788858eb

MAINTAINERS

+1 −0
Original line number Diff line number Diff line
@@ -5193,6 +5193,7 @@ F: arch/x86/kernel/cpu/mshyperv.c 
F:	drivers/hid/hid-hyperv.c

F:	drivers/hv/

F:	drivers/input/serio/hyperv-keyboard.c

F:	drivers/pci/host/pci-hyperv.c

F:	drivers/net/hyperv/

F:	drivers/scsi/storvsc_drv.c

F:	drivers/video/fbdev/hyperv_fb.c

drivers/pci/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -118,4 +118,11 @@ config PCI_LABEL 
	def_bool y if (DMI || ACPI)

	select NLS



config PCI_HYPERV

        tristate "Hyper-V PCI Frontend"

        depends on PCI && X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64

        help

          The PCI device frontend driver allows the kernel to import arbitrary

          PCI devices from a PCI backend to support PCI driver domains.



source "drivers/pci/host/Kconfig"

drivers/pci/host/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ obj-$(CONFIG_PCIE_DW) += pcie-designware.o 
obj-$(CONFIG_PCI_DRA7XX) += pci-dra7xx.o

obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o

obj-$(CONFIG_PCI_IMX6) += pci-imx6.o

obj-$(CONFIG_PCI_HYPERV) += pci-hyperv.o

obj-$(CONFIG_PCI_MVEBU) += pci-mvebu.o

obj-$(CONFIG_PCI_TEGRA) += pci-tegra.o

obj-$(CONFIG_PCI_RCAR_GEN2) += pci-rcar-gen2.o

drivers/pci/host/pci-hyperv.c

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