From: Bjorn Helgaas <helgaas@kernel.org>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: "Nishanth Menon" <nm@ti.com>,
"Santosh Shilimkar" <ssantosh@kernel.org>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Tero Kristo" <kristo@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
"Siddharth Vadapalli" <s-vadapalli@ti.com>,
"Bao Cheng Su" <baocheng.su@siemens.com>,
"Hua Qian Li" <huaqian.li@siemens.com>,
"Diogo Ivo" <diogo.ivo@siemens.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>
Subject: Re: [PATCH v6 4/7] PCI: keystone: Add support for PVU-based DMA isolation on AM654
Date: Wed, 30 Oct 2024 15:57:45 -0500 [thread overview]
Message-ID: <20241030205745.GA1219408@bhelgaas> (raw)
In-Reply-To: <f6ea60ec075e981a9b587b42baec33649e3f3918.1725901439.git.jan.kiszka@siemens.com>
On Mon, Sep 09, 2024 at 07:03:57PM +0200, Jan Kiszka wrote:
> From: Jan Kiszka <jan.kiszka@siemens.com>
>
> The AM654 lacks an IOMMU, thus does not support isolating DMA requests
> from untrusted PCI devices to selected memory regions this way. Use
> static PVU-based protection instead. The PVU, when enabled, will only
> accept DMA requests that address previously configured regions.
>
> Use the availability of a restricted-dma-pool memory region as trigger
> and register it as valid DMA target with the PVU. In addition, enable
> the mapping of requester IDs to VirtIDs in the PCI RC. Use only a single
> VirtID so far, catching all devices. This may be extended later on.
>
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
> + /* Only process the first restricted dma pool, more are not allowed */
s/dma/DMA/ to match other usage.
next prev parent reply other threads:[~2024-10-30 20:57 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-09 17:03 [PATCH v6 0/7] soc: ti: Add and use PVU on K3-AM65 for DMA isolation Jan Kiszka
2024-09-09 17:03 ` [PATCH v6 1/7] dt-bindings: soc: ti: Add AM65 peripheral virtualization unit Jan Kiszka
2024-09-09 17:03 ` [PATCH v6 2/7] dt-bindings: PCI: ti,am65: Extend for use with PVU Jan Kiszka
2024-09-18 9:11 ` Krzysztof Kozlowski
2024-09-09 17:03 ` [PATCH v6 3/7] soc: ti: Add IOMMU-like PVU driver Jan Kiszka
2024-09-09 17:03 ` [PATCH v6 4/7] PCI: keystone: Add support for PVU-based DMA isolation on AM654 Jan Kiszka
2024-10-30 20:57 ` Bjorn Helgaas [this message]
2024-11-03 6:15 ` Vignesh Raghavendra
2024-11-03 9:50 ` Jan Kiszka
2024-09-09 17:03 ` [PATCH v6 5/7] arm64: dts: ti: k3-am65-main: Add PVU nodes Jan Kiszka
2024-09-09 17:03 ` [PATCH v6 6/7] arm64: dts: ti: k3-am65-main: Add VMAP registers to PCI root complexes Jan Kiszka
2024-09-09 17:04 ` [PATCH v6 7/7] arm64: dts: ti: iot2050: Add overlay for DMA isolation for devices behind PCI RC Jan Kiszka
2024-10-30 20:57 ` [PATCH v6 0/7] soc: ti: Add and use PVU on K3-AM65 for DMA isolation Bjorn Helgaas
2025-04-18 7:30 ` [PATCH v7 0/8] " huaqian.li
2025-04-18 7:30 ` [PATCH v7 1/8] dt-bindings: soc: ti: Add AM65 peripheral virtualization unit huaqian.li
2025-04-18 7:30 ` [PATCH v7 2/8] dt-bindings: PCI: ti,am65: Extend for use with PVU huaqian.li
2025-04-18 8:24 ` Rob Herring (Arm)
2025-04-18 7:30 ` [PATCH v7 3/8] soc: ti: Add IOMMU-like PVU driver huaqian.li
2025-04-18 7:30 ` [PATCH v7 4/8] PCI: keystone: Add support for PVU-based DMA isolation on AM654 huaqian.li
2025-04-18 7:30 ` [PATCH v7 5/8] arm64: dts: ti: k3-am65-main: Add PVU nodes huaqian.li
2025-04-18 7:30 ` [PATCH v7 6/8] arm64: dts: ti: k3-am65-main: Add VMAP registers to PCI root complexes huaqian.li
2025-04-18 7:30 ` [PATCH v7 7/8] arm64: dts: ti: iot2050: Add overlay for DMA isolation for devices behind PCI RC huaqian.li
2025-04-18 7:30 ` [PATCH v7 8/8] swiotlb: Make IO_TLB_SEGSIZE configurable huaqian.li
2025-04-18 13:43 ` [PATCH v7 0/8] soc: ti: Add and use PVU on K3-AM65 for DMA isolation Nishanth Menon
2025-04-18 16:34 ` Bjorn Helgaas
2025-04-18 19:04 ` Nishanth Menon
2025-04-22 5:16 ` Li, Hua Qian
2025-04-22 6:13 ` [PATCH v8 " huaqian.li
2025-04-22 6:14 ` [PATCH v8 1/7] dt-bindings: soc: ti: Add AM65 peripheral virtualization unit huaqian.li
2025-04-22 6:14 ` [PATCH v8 2/7] dt-bindings: PCI: ti,am65: Extend for use with PVU huaqian.li
2025-04-22 6:14 ` [PATCH v8 3/7] soc: ti: Add IOMMU-like PVU driver huaqian.li
2025-04-22 6:14 ` [PATCH v8 4/7] PCI: keystone: Add support for PVU-based DMA isolation on AM654 huaqian.li
2025-04-25 16:48 ` Siddharth Vadapalli
2025-07-15 8:55 ` Jan Kiszka
2025-07-15 9:15 ` Siddharth Vadapalli
2025-07-16 5:10 ` [PATCH v9 0/8] soc: ti: Add and use PVU on K3-AM65 for DMA isolation huaqian.li
2025-07-16 5:10 ` [PATCH v9 1/7] dt-bindings: soc: ti: Add AM65 peripheral virtualization unit huaqian.li
2025-07-16 5:10 ` [PATCH v9 2/7] dt-bindings: PCI: ti,am65: Extend for use with PVU huaqian.li
2025-07-16 5:10 ` [PATCH v9 3/7] soc: ti: Add IOMMU-like PVU driver huaqian.li
2025-07-16 5:10 ` [PATCH v9 4/7] PCI: keystone: Add support for PVU-based DMA isolation on AM654 huaqian.li
2025-07-16 5:10 ` [PATCH v9 5/7] arm64: dts: ti: k3-am65-main: Add PVU nodes huaqian.li
2025-07-16 5:10 ` [PATCH v9 6/7] arm64: dts: ti: k3-am65-main: Add VMAP registers to PCI root complexes huaqian.li
2025-07-16 5:10 ` [PATCH v9 7/7] arm64: dts: ti: iot2050: Add overlay for DMA isolation for devices behind PCI RC huaqian.li
2025-07-16 6:02 ` [PATCH v9 0/8] soc: ti: Add and use PVU on K3-AM65 for DMA isolation Krzysztof Kozlowski
2025-07-16 6:37 ` Li, Hua Qian
2025-07-16 5:39 ` [PATCH v9 (RESEND) 0/7] " huaqian.li
2025-07-16 5:39 ` [PATCH v9 (RESEND) 1/7] dt-bindings: soc: ti: Add AM65 peripheral virtualization unit huaqian.li
2025-07-16 5:39 ` [PATCH v9 (RESEND) 2/7] dt-bindings: PCI: ti,am65: Extend for use with PVU huaqian.li
2025-07-16 5:39 ` [PATCH v9 (RESEND) 3/7] soc: ti: Add IOMMU-like PVU driver huaqian.li
2025-07-16 5:39 ` [PATCH v9 (RESEND) 4/7] PCI: keystone: Add support for PVU-based DMA isolation on AM654 huaqian.li
2025-07-16 7:16 ` Siddharth Vadapalli
2025-07-16 5:39 ` [PATCH v9 (RESEND) 5/7] arm64: dts: ti: k3-am65-main: Add PVU nodes huaqian.li
2025-07-16 5:39 ` [PATCH v9 (RESEND) 6/7] arm64: dts: ti: k3-am65-main: Add VMAP registers to PCI root complexes huaqian.li
2025-07-16 5:39 ` [PATCH v9 (RESEND) 7/7] arm64: dts: ti: iot2050: Add overlay for DMA isolation for devices behind PCI RC huaqian.li
2025-04-22 6:14 ` [PATCH v8 5/7] arm64: dts: ti: k3-am65-main: Add PVU nodes huaqian.li
2025-04-22 6:14 ` [PATCH v8 6/7] arm64: dts: ti: k3-am65-main: Add VMAP registers to PCI root complexes huaqian.li
2025-04-22 6:14 ` [PATCH v8 7/7] arm64: dts: ti: iot2050: Add overlay for DMA isolation for devices behind PCI RC huaqian.li
2025-04-21 15:07 ` [PATCH v7 0/8] soc: ti: Add and use PVU on K3-AM65 for DMA isolation Rob Herring (Arm)
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