search for: devicetree

...ings/pci/pci-iommu.txt. Like many other IOMMUs, virtio-iommu > distinguishes masters by their endpoint IDs, which requires one IOMMU cell > in the "iommus" property. > > Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker at arm.com> > --- > Documentation/devicetree/bindings/virtio/mmio.txt | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt > index 5069c1b8e193..337da0e3a87f 100644 > --- a/Documentation/devicetree/bindings/virtio/...

...ings/pci/pci-iommu.txt. Like many other IOMMUs, virtio-iommu > distinguishes masters by their endpoint IDs, which requires one IOMMU cell > in the "iommus" property. > > Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker at arm.com> > --- > Documentation/devicetree/bindings/virtio/mmio.txt | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt > index 5069c1b8e193..337da0e3a87f 100644 > --- a/Documentation/devicetree/bindings/virtio/...

From: Mark Brown <broonie at linaro.org> According to the README at the existing URL the spec has moved to github so update the documentation to match. Signed-off-by: Mark Brown <broonie at linaro.org> --- Documentation/devicetree/bindings/virtio/mmio.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..0648851d2a25 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ b/Do...

From: Mark Brown <broonie at linaro.org> According to the README at the existing URL the spec has moved to github so update the documentation to match. Signed-off-by: Mark Brown <broonie at linaro.org> --- Documentation/devicetree/bindings/virtio/mmio.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..0648851d2a25 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ b/Do...

...o-iommu > >> distinguishes masters by their endpoint IDs, which requires one IOMMU cell > >> in the "iommus" property. > >> > >> Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker at arm.com> > >> --- > >> Documentation/devicetree/bindings/virtio/mmio.txt | 8 ++++++++ > >> 1 file changed, 8 insertions(+) > >> > >> diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt > >> index 5069c1b8e193..337da0e3a87f 100644 > >> ---...

...iew.rst | 2 + .../arm/stm32/stm32f769-overview.rst | 2 + .../arm/stm32/stm32h743-overview.rst | 2 + .../arm/stm32/stm32mp157-overview.rst | 2 + Documentation/bpf/btf.rst | 2 + .../bindings/mtd/amlogic,meson-nand.txt | 2 +- .../devicetree/bindings/mtd/gpmc-nand.txt | 2 +- .../devicetree/bindings/mtd/marvell-nand.txt | 2 +- .../devicetree/bindings/mtd/tango-nand.txt | 2 +- .../devicetree/bindings/net/fsl-enetc.txt | 7 +- .../bindings/pci/amlogic,meson-pcie.txt | 2 +- .../regulator/qcom,rpmh-regulator.txt...

Whilst always using the DMA API is OK on ARM systems in most cases, there can be a problem if a hypervisor fails to tell its guest that a virtio device is cache-coherent. In that case, the guest will end up making non-cacheable mappings for DMA buffers (i.e. the vring), which, if the host is using a cacheable view of the same buffer on the other end, is not a recipe for success. It turns out that

Whilst always using the DMA API is OK on ARM systems in most cases, there can be a problem if a hypervisor fails to tell its guest that a virtio device is cache-coherent. In that case, the guest will end up making non-cacheable mappings for DMA buffers (i.e. the vring), which, if the host is using a cacheable view of the same buffer on the other end, is not a recipe for success. It turns out that

...s out in the virtio-mmio DT binding in the hope of heading off any further workarounds for future firmware mishaps. Fixes: c7070619f340 ("vring: Force use of DMA API for ARM-based systems with legacy devices") Signed-off-by: Robin Murphy <robin.murphy at arm.com> --- Documentation/devicetree/bindings/virtio/mmio.txt | 3 +++ drivers/virtio/virtio_ring.c | 11 ++++++++--- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..8f2a981e10...

...s out in the virtio-mmio DT binding in the hope of heading off any further workarounds for future firmware mishaps. Fixes: c7070619f340 ("vring: Force use of DMA API for ARM-based systems with legacy devices") Signed-off-by: Robin Murphy <robin.murphy at arm.com> --- Documentation/devicetree/bindings/virtio/mmio.txt | 3 +++ drivers/virtio/virtio_ring.c | 11 ++++++++--- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..8f2a981e10...

...el.org> > --- > Documentation/acpi/dsd/leds.txt | 2 +- > Documentation/admin-guide/kernel-parameters.rst | 6 +++--- > Documentation/admin-guide/kernel-parameters.txt | 16 ++++++++-------- > Documentation/admin-guide/ras.rst | 2 +- > .../devicetree/bindings/net/fsl-enetc.txt | 7 +++---- > .../bindings/pci/amlogic,meson-pcie.txt | 2 +- > .../bindings/regulator/qcom,rpmh-regulator.txt | 2 +- > Documentation/devicetree/booting-without-of.txt | 2 +- > Documentation/driver-api/gpio/board.rst | 2 +-...

...el.org> > --- > Documentation/acpi/dsd/leds.txt | 2 +- > Documentation/admin-guide/kernel-parameters.rst | 6 +++--- > Documentation/admin-guide/kernel-parameters.txt | 16 ++++++++-------- > Documentation/admin-guide/ras.rst | 2 +- > .../devicetree/bindings/net/fsl-enetc.txt | 7 +++---- > .../bindings/pci/amlogic,meson-pcie.txt | 2 +- > .../bindings/regulator/qcom,rpmh-regulator.txt | 2 +- > Documentation/devicetree/booting-without-of.txt | 2 +- > Documentation/driver-api/gpio/board.rst | 2 +-...

...indings/iommu/iommu.txt. Otherwise, the virtio-mmio device may perform DMA through an IOMMU, which requires an "iommus" property. Describe these requirements in the device-tree bindings documentation. Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker at arm.com> --- .../devicetree/bindings/virtio/mmio.txt | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..748595473b36 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.t...

...Mark Brown <broonie at kernel.org> --- Documentation/acpi/dsd/leds.txt | 2 +- Documentation/admin-guide/kernel-parameters.rst | 6 +++--- Documentation/admin-guide/kernel-parameters.txt | 16 ++++++++-------- Documentation/admin-guide/ras.rst | 2 +- .../devicetree/bindings/net/fsl-enetc.txt | 7 +++---- .../bindings/pci/amlogic,meson-pcie.txt | 2 +- .../bindings/regulator/qcom,rpmh-regulator.txt | 2 +- Documentation/devicetree/booting-without-of.txt | 2 +- Documentation/driver-api/gpio/board.rst | 2 +- Documentation/drive...

...Mark Brown <broonie at kernel.org> --- Documentation/acpi/dsd/leds.txt | 2 +- Documentation/admin-guide/kernel-parameters.rst | 6 +++--- Documentation/admin-guide/kernel-parameters.txt | 16 ++++++++-------- Documentation/admin-guide/ras.rst | 2 +- .../devicetree/bindings/net/fsl-enetc.txt | 7 +++---- .../bindings/pci/amlogic,meson-pcie.txt | 2 +- .../bindings/regulator/qcom,rpmh-regulator.txt | 2 +- Documentation/devicetree/booting-without-of.txt | 2 +- Documentation/driver-api/gpio/board.rst | 2 +- Documentation/drive...

...ab <mchehab+samsung at kernel.org> --- Documentation/acpi/dsd/leds.txt | 2 +- Documentation/admin-guide/kernel-parameters.rst | 6 +++--- Documentation/admin-guide/kernel-parameters.txt | 16 ++++++++-------- Documentation/admin-guide/ras.rst | 2 +- .../devicetree/bindings/net/fsl-enetc.txt | 7 +++---- .../bindings/pci/amlogic,meson-pcie.txt | 2 +- .../bindings/regulator/qcom,rpmh-regulator.txt | 2 +- Documentation/devicetree/booting-without-of.txt | 2 +- Documentation/driver-api/gpio/board.rst | 2 +- Documentation/drive...

...ab <mchehab+samsung at kernel.org> --- Documentation/acpi/dsd/leds.txt | 2 +- Documentation/admin-guide/kernel-parameters.rst | 6 +++--- Documentation/admin-guide/kernel-parameters.txt | 16 ++++++++-------- Documentation/admin-guide/ras.rst | 2 +- .../devicetree/bindings/net/fsl-enetc.txt | 7 +++---- .../bindings/pci/amlogic,meson-pcie.txt | 2 +- .../bindings/regulator/qcom,rpmh-regulator.txt | 2 +- Documentation/devicetree/booting-without-of.txt | 2 +- Documentation/driver-api/gpio/board.rst | 2 +- Documentation/drive...

...> Documentation/acpi/dsd/leds.txt | 2 +- > > Documentation/admin-guide/kernel-parameters.rst | 6 +++--- > > Documentation/admin-guide/kernel-parameters.txt | 16 ++++++++-------- > > Documentation/admin-guide/ras.rst | 2 +- > > .../devicetree/bindings/net/fsl-enetc.txt | 7 +++---- > > .../bindings/pci/amlogic,meson-pcie.txt | 2 +- > > .../bindings/regulator/qcom,rpmh-regulator.txt | 2 +- > > Documentation/devicetree/booting-without-of.txt | 2 +- > > Documentation/driver-api/gpio/board.r...

...39;t have a node in the device tree. The virtio-pci-iommu node describes both, by linking the PCI endpoint to "iommus" property of DMA master nodes and to "iommu-map" properties of bus nodes. Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker at arm.com> --- .../devicetree/bindings/virtio/iommu.txt | 66 +++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 Documentation/devicetree/bindings/virtio/iommu.txt diff --git a/Documentation/devicetree/bindings/virtio/iommu.txt b/Documentation/devicetree/bindings/virtio/iommu.txt new file mode 100644...

..."iommus" property of DMA master nodes and to "iommu-map" properties of bus nodes. Reviewed-by: Rob Herring <robh at kernel.org> Reviewed-by: Eric Auger <eric.auger at redhat.com> Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker at arm.com> --- .../devicetree/bindings/virtio/iommu.txt | 66 +++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 Documentation/devicetree/bindings/virtio/iommu.txt diff --git a/Documentation/devicetree/bindings/virtio/iommu.txt b/Documentation/devicetree/bindings/virtio/iommu.txt new file mode 100644...