From: Marc Zyngier <maz@kernel.org>
To: Frank Li <Frank.li@nxp.com>
Cc: "Robin Murphy" <robin.murphy@arm.com>,
"Bjorn Helgaas" <helgaas@kernel.org>,
"Richard Zhu" <hongxing.zhu@nxp.com>,
"Lucas Stach" <l.stach@pengutronix.de>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Shawn Guo" <shawnguo@kernel.org>,
"Sascha Hauer" <s.hauer@pengutronix.de>,
"Pengutronix Kernel Team" <kernel@pengutronix.de>,
"Fabio Estevam" <festevam@gmail.com>,
"NXP Linux Team" <linux-imx@nxp.com>,
"Philipp Zabel" <p.zabel@pengutronix.de>,
"Liam Girdwood" <lgirdwood@gmail.com>,
"Mark Brown" <broonie@kernel.org>,
"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Conor Dooley" <conor+dt@kernel.org>,
linux-pci@vger.kernel.org, imx@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
devicetree@vger.kernel.org, "Will Deacon" <will@kernel.org>,
"Joerg Roedel" <joro@8bytes.org>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Alyssa Rosenzweig" <alyssa@rosenzweig.io>
Subject: Re: [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95
Date: Tue, 04 Jun 2024 16:25:51 +0100 [thread overview]
Message-ID: <86cyowlog0.wl-maz@kernel.org> (raw)
In-Reply-To: <Zl4v10Od99et+tLX@lizhi-Precision-Tower-5810>
On Mon, 03 Jun 2024 22:04:23 +0100,
Frank Li <Frank.li@nxp.com> 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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next prev parent reply other threads:[~2024-06-04 15:26 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-28 19:39 [PATCH v5 00/12] PCI: imx6: Fix\rename\clean up and add lut information for imx95 Frank Li
2024-05-28 19:39 ` [PATCH v5 01/12] PCI: imx6: Fix establish link failure in EP mode for iMX8MM and iMX8MP Frank Li
2024-05-28 19:39 ` [PATCH v5 02/12] PCI: imx6: Fix i.MX8MP PCIe EP's occasional failure to trigger MSI Frank Li
2024-05-28 19:39 ` [PATCH v5 03/12] PCI: imx6: Rename imx6_* with imx_* Frank Li
2024-05-28 19:39 ` [PATCH v5 04/12] PCI: imx6: Introduce SoC specific callbacks for controlling REFCLK Frank Li
2024-05-28 19:39 ` [PATCH v5 05/12] PCI: imx6: Simplify switch-case logic by involve core_reset callback Frank Li
2024-05-28 19:39 ` [PATCH v5 06/12] PCI: imx6: Improve comment for workaround ERR010728 Frank Li
2024-05-28 19:39 ` [PATCH v5 07/12] PCI: imx6: Add help function imx_pcie_match_device() Frank Li
2024-05-28 19:39 ` [PATCH v5 08/12] PCI: imx6: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95 Frank Li
2024-05-30 23:08 ` Bjorn Helgaas
2024-05-31 13:52 ` Marc Zyngier
2024-05-31 14:58 ` Robin Murphy
2024-05-31 16:25 ` Frank Li
2024-06-03 17:19 ` Bjorn Helgaas
2024-06-03 18:42 ` Frank Li
2024-06-03 18:56 ` Bjorn Helgaas
2024-06-03 20:07 ` Frank Li
2024-06-06 20:24 ` Frank Li
2024-06-13 22:41 ` Bjorn Helgaas
2024-06-17 14:26 ` Frank Li
2024-06-21 22:29 ` Frank Li
2024-06-21 22:43 ` Bjorn Helgaas
2024-06-22 17:38 ` Bjorn Helgaas
2024-06-24 15:00 ` Frank Li
2024-06-03 20:20 ` Robin Murphy
2024-06-03 21:04 ` Frank Li
2024-06-04 15:25 ` Marc Zyngier [this message]
2024-06-04 15:47 ` Frank Li
2024-06-03 20:29 ` Laurentiu Tudor
2024-06-03 21:16 ` Frank Li
2024-05-31 16:14 ` Frank Li
2024-06-03 17:11 ` Bjorn Helgaas
2024-06-03 18:21 ` Frank Li
2024-06-22 4:11 ` Manivannan Sadhasivam
2024-06-24 15:06 ` Frank Li
2024-05-28 19:39 ` [PATCH v5 09/12] PCI: imx6: Consolidate redundant if-checks Frank Li
2024-05-28 19:39 ` [PATCH v5 10/12] dt-bindings: imx6q-pcie: Add i.MX8Q pcie compatible string Frank Li
2024-05-28 19:39 ` [PATCH v5 11/12] PCI: imx6: Call: Common PHY API to set mode, speed, and submode Frank Li
2024-05-28 19:39 ` [PATCH v5 12/12] PCI: imx6: Add i.MX8Q PCIe root complex (RC) support Frank Li
2024-05-28 22:31 ` [PATCH v5 00/12] PCI: imx6: Fix\rename\clean up and add lut information for imx95 Bjorn Helgaas
2024-05-29 15:00 ` Frank Li
2024-05-30 17:27 ` Bjorn Helgaas
2024-05-30 17:56 ` Frank Li
2024-06-06 21:24 ` Frank Li
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