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linux-stable/drivers/pci/controller
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Boqun Feng d06957d7a6 PCI: hv: Avoid the retarget interrupt hypercall in irq_unmask() on ARM64 
On ARM64 Hyper-V guests, SPIs are used for the interrupts of virtual PCI
devices, and SPIs can be managed directly via GICD registers. Therefore
the retarget interrupt hypercall is not needed on ARM64.

An arch-specific interface hv_arch_irq_unmask() is introduced to handle
the architecture level differences on this. For x86, the behavior
remains unchanged, while for ARM64 no hypercall is invoked when
unmasking an irq for virtual PCI devices.

Link: https://lore.kernel.org/r/20220217034525.1687678-1-boqun.feng@gmail.com
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
2022-03-02 10:12:59 +00:00
..
cadence Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
dwc bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
mobiveil PCI: ls-gen4: Rename ls_pcie_g4 to ls_g4_pcie 2022-01-03 15:01:59 -06:00
Kconfig pci-v5.17-changes 2022-01-16 08:08:11 +02:00
Makefile Merge branch 'pci/host/mt7621' 2021-11-05 11:28:51 -05:00
pci-aardvark.c pci-v5.17-changes 2022-01-16 08:08:11 +02:00
pci-ftpci100.c PCI: Bulk conversion to generic_handle_domain_irq() 2021-08-02 11:53:05 -05:00
pci-host-common.c
pci-host-generic.c
pci-hyperv-intf.c
pci-hyperv.c PCI: hv: Avoid the retarget interrupt hypercall in irq_unmask() on ARM64 2022-03-02 10:12:59 +00:00
pci-ixp4xx.c ARM: ixp4xx: fix building both pci drivers 2021-08-12 23:10:09 +02:00
pci-loongson.c
pci-mvebu.c Merge branch 'pci/errors' 2022-01-13 09:57:52 -06:00
pci-rcar-gen2.c PCI: rcar-gen2: Rename rcar_pci_priv to rcar_pci 2022-01-03 15:05:28 -06:00
pci-tegra.c Merge branch 'remotes/lorenzo/pci/tegra' 2021-09-02 14:56:50 -05:00
pci-thunder-ecam.c PCI: thunder: Drop error data fabrication when config read fails 2021-11-18 13:39:32 -06:00
pci-thunder-pem.c PCI: thunder: Drop error data fabrication when config read fails 2021-11-18 13:39:32 -06:00
pci-v3-semi.c
pci-versatile.c
pci-xgene-msi.c PCI: xgene-msi: Use bitmap_zalloc() when applicable 2021-11-29 17:29:15 +00:00
pci-xgene.c Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
pcie-altera-msi.c PCI: Bulk conversion to generic_handle_domain_irq() 2021-08-02 11:53:05 -05:00
pcie-altera.c Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
pcie-apple.c pci-v5.17-changes 2022-01-16 08:08:11 +02:00
pcie-brcmstb.c pci-v5.17-changes 2022-01-16 08:08:11 +02:00
pcie-hisi-error.c
pcie-iproc-bcma.c PCI: iproc: Rename iproc_pcie_bcma_ to iproc_bcma_pcie_ 2022-01-03 15:01:49 -06:00
pcie-iproc-msi.c PCI: Bulk conversion to generic_handle_domain_irq() 2021-08-02 11:53:05 -05:00
pcie-iproc-platform.c PCI: iproc: Rename iproc_pcie_pltfm_ to iproc_pltfm_pcie_ 2022-01-03 15:01:53 -06:00
pcie-iproc.c PCI: iproc: Drop error data fabrication when config read fails 2021-11-18 13:39:52 -06:00
pcie-iproc.h
pcie-mediatek-gen3.c Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
pcie-mediatek.c Merge branch 'pci/errors' 2022-01-13 09:57:52 -06:00
pcie-microchip-host.c PCI: microchip: Rename mc_port to mc_pcie 2022-01-03 15:02:08 -06:00
pcie-mt7621.c Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
pcie-rcar-ep.c PCI: rcar-ep: Remove unneeded includes 2021-10-08 09:41:38 -05:00
pcie-rcar-host.c Merge branch 'pci/errors' 2022-01-13 09:57:52 -06:00
pcie-rcar.c
pcie-rcar.h PCI: rcar: Add L1 link state fix into data abort hook 2021-08-16 14:51:30 +01:00
pcie-rockchip-ep.c PCI: endpoint: Add virtual function number in pci_epc ops 2021-08-19 14:13:28 +01:00
pcie-rockchip-host.c PCI: rockchip-host: Drop error data fabrication when config read fails 2021-11-18 13:41:25 -06:00
pcie-rockchip.c
pcie-rockchip.h
pcie-xilinx-cpm.c PCI: xilinx-cpm: Rename xilinx_cpm_pcie_port to xilinx_cpm_pcie 2022-01-03 15:05:28 -06:00
pcie-xilinx-nwl.c PCI: xilinx-nwl: Simplify code and fix a memory leak 2021-12-01 09:26:51 +00:00
pcie-xilinx.c PCI: xilinx: Rename xilinx_pcie_port to xilinx_pcie 2022-01-03 15:05:28 -06:00
vmd.c Merge branch 'pci/errors' 2022-01-13 09:57:52 -06:00