kernel/Documentation, branch linux-5.16.y

KVM: arm64: Do not change the PMU event filter after a VCPU has run

2022-04-13T18:03:01Z

[ Upstream commit 5177fe91e4cf78a659aada2c9cf712db4d788481 ] Userspace can specify which events a guest is allowed to use with the KVM_ARM_VCPU_PMU_V3_FILTER attribute. The list of allowed events can be identified by a guest from reading the PMCEID{0,1}_EL0 registers. Changing the PMU event filter after a VCPU has run can cause reads of the registers performed before the filter is changed to return different values than reads performed with the new event filter in place. The architecture defines the two registers as read-only, and this behaviour contradicts that. Keep track when the first VCPU has run and deny changes to the PMU event filter to prevent this from happening. Signed-off-by: Marc Zyngier [ Alexandru E: Added commit message, updated ioctl documentation ] Signed-off-by: Alexandru Elisei Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20220127161759.53553-2-alexandru.elisei@arm.com Signed-off-by: Sasha Levin

docs: sysctl/kernel: add missing bit to panic_print

2022-04-08T12:06:57Z

commit a1ff1de00db21ecb956213f046b79741b64c6b65 upstream. Patch series "Some improvements on panic_print". This is a mix of a documentation fix with some additions to the "panic_print" syscall / parameter. The goal here is being able to collect all CPUs backtraces during a panic event and also to enable "panic_print" in a kdump event - details of the reasoning and design choices in the patches. This patch (of 3): Commit de6da1e8bcf0 ("panic: add an option to replay all the printk message in buffer") added a new bit to the sysctl/kernel parameter "panic_print", but the documentation was added only in kernel-parameters.txt, not in the sysctl guide. Fix it here by adding bit 5 to sysctl admin-guide documentation. [rdunlap@infradead.org: fix table format warning] Link: https://lkml.kernel.org/r/20220109055635.6999-1-rdunlap@infradead.org Link: https://lkml.kernel.org/r/20211109202848.610874-1-gpiccoli@igalia.com Link: https://lkml.kernel.org/r/20211109202848.610874-2-gpiccoli@igalia.com Fixes: de6da1e8bcf0 ("panic: add an option to replay all the printk message in buffer") Signed-off-by: Guilherme G. Piccoli Reviewed-by: Feng Tang Cc: Luis Chamberlain Cc: Kees Cook Cc: Iurii Zaikin Cc: Samuel Iglesias Gonsalvez Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

dt-bindings: pinctrl: pinctrl-microchip-sgpio: Fix example

2022-04-08T12:06:55Z

commit a6ff90f3fbd4d902aad8777f0329cef3a2768bde upstream. The blamed commit adds support for irq, but the reqisters for irq are outside of the memory size. They are at address 0x108. Therefore update the memory size to cover all the registers used by the device. Fixes: 01a9350bdd49fb ("dt-bindings: pinctrl: pinctrl-microchip-sgpio: Add irq support") Signed-off-by: Horatiu Vultur Link: https://lore.kernel.org/r/20220204153535.465827-2-horatiu.vultur@microchip.com Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman

dt-bindings: memory: mtk-smi: Correct minItems to 2 for the gals clocks

2022-04-08T12:06:55Z

commit 996ebc0e332bfb3091395f9bd286d8349a57be62 upstream. Mute the warning from "make dtbs_check": larb@14017000: clock-names: ['apb', 'smi'] is too short arch/arm64/boot/dts/mediatek/mt8183-evb.dt.yaml arch/arm64/boot/dts/mediatek/mt8183-kukui-jacuzzi-burnet.dt.yaml ... larb@16010000: clock-names: ['apb', 'smi'] is too short arch/arm64/boot/dts/mediatek/mt8183-evb.dt.yaml arch/arm64/boot/dts/mediatek/mt8183-kukui-jacuzzi-burnet.dt.yaml larb@17010000: clock-names: ['apb', 'smi'] is too short arch/arm64/boot/dts/mediatek/mt8183-evb.dt.yaml arch/arm64/boot/dts/mediatek/mt8183-kukui-jacuzzi-burnet.dt.yaml If a platform's larb supports gals, there will be some larbs have one more "gals" clock while the others still only need "apb"/"smi" clocks, then the minItems for clocks and clock-names are 2. Fixes: 27bb0e42855a ("dt-bindings: memory: mediatek: Convert SMI to DT schema") Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20220113111057.29918-4-yong.wu@mediatek.com Signed-off-by: Krzysztof Kozlowski Signed-off-by: Greg Kroah-Hartman

dt-bindings: memory: mtk-smi: No need mediatek,larb-id for mt8167

2022-04-08T12:06:55Z

commit ddc3a324889686ec9b358de20fdeec0d2668c7a8 upstream. Mute the warning from "make dtbs_check": larb@14016000: 'mediatek,larb-id' is a required property arch/arm64/boot/dts/mediatek/mt8167-pumpkin.dt.yaml larb@15001000: 'mediatek,larb-id' is a required property arch/arm64/boot/dts/mediatek/mt8167-pumpkin.dt.yaml larb@16010000: 'mediatek,larb-id' is a required property arch/arm64/boot/dts/mediatek/mt8167-pumpkin.dt.yaml As the description of mediatek,larb-id, the property is only required when the larbid is not consecutive from its IOMMU point of view. Also, from the description of mediatek,larbs in Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml, all the larbs must sort by the larb index. In mt8167, there is only one IOMMU HW and three larbs. The drivers already know its larb index from the mediatek,larbs property of IOMMU, thus no need this property. Fixes: 27bb0e42855a ("dt-bindings: memory: mediatek: Convert SMI to DT schema") Signed-off-by: Yong Wu Acked-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20220113111057.29918-3-yong.wu@mediatek.com Signed-off-by: Krzysztof Kozlowski Signed-off-by: Greg Kroah-Hartman

dt-bindings: memory: mtk-smi: Rename clock to clocks

2022-04-08T12:06:55Z

commit 5bf7fa48374eafe29dbb30448a0b0c083853583f upstream. The property "clock" should be rename to "clocks", and delete the "items", the minItems/maxItems should not be put under "items". Fixes: 27bb0e42855a ("dt-bindings: memory: mediatek: Convert SMI to DT schema") Signed-off-by: Yong Wu Acked-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20220113111057.29918-2-yong.wu@mediatek.com Signed-off-by: Krzysztof Kozlowski Signed-off-by: Greg Kroah-Hartman

media: dt-bindings: media: hynix,hi846: add link-frequencies description

2022-04-08T12:06:55Z

commit a44b8e8c9b2615ea7cf2361cbca3c1dff8119c87 upstream. link-frequencies is required but only mentioned in the example. Add it to the description. Fixes: f3ce7200ca18 ("media: dt-bindings: media: document SK Hynix Hi-846 MIPI CSI-2 8M pixel sensor") Signed-off-by: Martin Kepplinger Reviewed-by: Laurent Pinchart Reviewed-by: Rob Herring Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman

media: dt-binding: media: hynix,hi846: use $defs/port-base port description

2022-04-08T12:06:55Z

commit 6492eba4fafb5a9715ecf78b7155e88f8f88909a upstream. This fixes "make dt_binding_check": Documentation/devicetree/bindings/media/i2c/hynix,hi846.example.dt.yaml: camera@20: port:endpoint: Unevaluated properties are not allowed ('link-frequencies', 'data-lanes' were unexpected) From schema: Documentation/devicetree/bindings/media/i2c/hynix,hi846.yaml [Sakari Ailus: Reword commit message] Fixes: f3ce7200ca18 ("media: dt-bindings: media: document SK Hynix Hi-846 MIPI CSI-2 8M pixel sensor") Reported-by: Geert Uytterhoeven Signed-off-by: Martin Kepplinger Reviewed-by: Laurent Pinchart Reviewed-by: Rob Herring Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman

dt-bindings: spi: mxic: The interrupt property is not mandatory

2022-04-08T12:06:55Z

commit 90c204d3195a795f77f5bce767e311dd1c59ca17 upstream. The interrupt property is not mandatory at all, this property should not be part of the required properties list, so move it into the optional properties list. Fixes: 326e5c8d4a87 ("dt-binding: spi: Document Macronix controller bindings") Signed-off-by: Miquel Raynal Reviewed-by: Rob Herring Reviewed-by: Mark Brown Link: https://lore.kernel.org/linux-mtd/20211216111654.238086-8-miquel.raynal@bootlin.com Signed-off-by: Greg Kroah-Hartman

dt-bindings: mtd: nand-controller: Fix a comment in the examples

2022-04-08T12:06:55Z

commit 0e7f1b557974ce297e5e4c9d4245720fbb489886 upstream. The controller properties should be in the controller 'parent' node, while properties in the children nodes are specific to the NAND *chip*. This error was already present during the yaml conversion. Fixes: 2d472aba15ff ("mtd: nand: document the NAND controller/NAND chip DT representation") Signed-off-by: Miquel Raynal Acked-by: Rob Herring Link: https://lore.kernel.org/linux-mtd/20211216111654.238086-3-miquel.raynal@bootlin.com Signed-off-by: Greg Kroah-Hartman