Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS... | linux-arm-kernel

[PATCH v5 00/12] PCI: imx6: Fix\rename\clean up and add lut information for imx95 · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 01/12] PCI: imx6: Fix establish link failure in EP mode for iMX8MM and iMX8MP · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 02/12] PCI: imx6: Fix i.MX8MP PCIe EP's occasional failure to trigger MSI · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 03/12] PCI: imx6: Rename imx6_* with imx_* · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 04/12] PCI: imx6: Introduce SoC specific callbacks for controlling REFCLK · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 05/12] PCI: imx6: Simplify switch-case logic by involve core_reset callback · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 06/12] PCI: imx6: Improve comment for workaround ERR010728 · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 07/12] PCI: imx6: Add help function imx_pcie_match_device() · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.Li@nxp.com> · 2024-05-28
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Bjorn Helgaas <helgaas@kernel.org> · 2024-05-30
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Marc Zyngier <maz@kernel.org> · 2024-05-31
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Robin Murphy <robin.murphy@arm.com> · 2024-05-31
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-05-31
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Bjorn Helgaas <helgaas@kernel.org> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Bjorn Helgaas <helgaas@kernel.org> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-06
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Bjorn Helgaas <helgaas@kernel.org> · 2024-06-13
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-17
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-21
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Bjorn Helgaas <helgaas@kernel.org> · 2024-06-21
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Bjorn Helgaas <helgaas@kernel.org> · 2024-06-22
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-24
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Robin Murphy <robin.murphy@arm.com> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Marc Zyngier <maz@kernel.org> · 2024-06-04
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-04
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Laurentiu Tudor <hidden> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-05-31
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Bjorn Helgaas <helgaas@kernel.org> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-03
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Manivannan Sadhasivam <hidden> · 2024-06-22
Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 · Frank Li <Frank.li@nxp.com> · 2024-06-24
[PATCH v5 09/12] PCI: imx6: Consolidate redundant if-checks · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 10/12] dt-bindings: imx6q-pcie: Add i.MX8Q pcie compatible string · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 11/12] PCI: imx6: Call: Common PHY API to set mode, speed, and submode · Frank Li <Frank.Li@nxp.com> · 2024-05-28
[PATCH v5 12/12] PCI: imx6: Add i.MX8Q PCIe root complex (RC) support · Frank Li <Frank.Li@nxp.com> · 2024-05-28
Re: [PATCH v5 00/12] PCI: imx6: Fix\rename\clean up and add lut information for imx95 · Bjorn Helgaas <helgaas@kernel.org> · 2024-05-28
Re: [PATCH v5 00/12] PCI: imx6: Fix\rename\clean up and add lut information for imx95 · Frank Li <Frank.li@nxp.com> · 2024-05-29
Re: [PATCH v5 00/12] PCI: imx6: Fix\rename\clean up and add lut information for imx95 · Bjorn Helgaas <helgaas@kernel.org> · 2024-05-30
Re: [PATCH v5 00/12] PCI: imx6: Fix\rename\clean up and add lut information for imx95 · Frank Li <Frank.li@nxp.com> · 2024-05-30
Re: [PATCH v5 00/12] PCI: imx6: Fix\rename\clean up and add lut information for imx95 · Frank Li <Frank.li@nxp.com> · 2024-06-06

Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95

From: Marc Zyngier <maz@kernel.org>
Date: 2024-06-04 15:25:54
Also in: bpf, imx, linux-devicetree, linux-pci, lkml

On Mon, 03 Jun 2024 22:04:23 +0100,
Frank Li [off-list ref] wrote:

iommu may share one stream id for multi-devices. but ITS MSI can't. each
device's MSI index start from 0. It needs difference stream id for each
device.

That's not quite true. We go through all sort of hoops to find about
device aliasing on PCI and allow devices that translate into the same
DID to get MSIs.

Of course, just like the IOMMU, you lose any form of isolation, but
you get what you pay for.

	M.

-- 
Without deviation from the norm, progress is not possible.

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