kernel/git/stable/linux.git/Documentation/ABI, branch linux-6.4.y

platform/chrome: chromeos_acpi: print hex string for ACPI_TYPE_BUFFER

2023-09-13T07:48:42+00:00

commit 0820debb7d489e9eb1f68b7bb69e6ae210699b3f upstream. `element->buffer.pointer` should be binary blob. `%s` doesn't work perfect for them. Print hex string for ACPI_TYPE_BUFFER. Also update the documentation to reflect this. Fixes: 0a4cad9c11ad ("platform/chrome: Add ChromeOS ACPI device driver") Cc: stable@vger.kernel.org Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20230803011245.3773756-1-tzungbi@kernel.org Signed-off-by: Tzung-Bi Shih Signed-off-by: Greg Kroah-Hartman

f2fs: fix spelling in ABI documentation

2023-09-13T07:48:32+00:00

[ Upstream commit c709d099a0d2befa2b16c249ef8df722b43e6c28 ] Correct spelling problems as identified by codespell. Fixes: 9e615dbba41e ("f2fs: add missing description for ipu_policy node") Fixes: b2e4a2b300e5 ("f2fs: expose discard related parameters in sysfs") Fixes: 846ae671ad36 ("f2fs: expose extension_list sysfs entry") Signed-off-by: Randy Dunlap Cc: Jaegeuk Kim Cc: Chao Yu Cc: linux-f2fs-devel@lists.sourceforge.net Cc: Yangtao Li Cc: Konstantin Vyshetsky Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin

docs: ABI: fix spelling/grammar in SBEFIFO timeout interface

2023-09-13T07:48:31+00:00

[ Upstream commit 2cd9ec2a51474d4c0b4d2a061f2de7da34eff476 ] Correct spelling problems as identified by codespell. Correct one grammar error. Fixes: 9a93de620e0a ("docs: ABI: testing: Document the SBEFIFO timeout interface") Signed-off-by: Randy Dunlap Cc: Eddie James Cc: Joel Stanley Link: https://lore.kernel.org/r/20230710052305.29611-1-rdunlap@infradead.org Signed-off-by: Joel Stanley Signed-off-by: Sasha Levin

x86/speculation: Add Gather Data Sampling mitigation

2023-08-08T18:04:50+00:00

commit 8974eb588283b7d44a7c91fa09fcbaf380339f3a upstream Gather Data Sampling (GDS) is a hardware vulnerability which allows unprivileged speculative access to data which was previously stored in vector registers. Intel processors that support AVX2 and AVX512 have gather instructions that fetch non-contiguous data elements from memory. On vulnerable hardware, when a gather instruction is transiently executed and encounters a fault, stale data from architectural or internal vector registers may get transiently stored to the destination vector register allowing an attacker to infer the stale data using typical side channel techniques like cache timing attacks. This mitigation is different from many earlier ones for two reasons. First, it is enabled by default and a bit must be set to *DISABLE* it. This is the opposite of normal mitigation polarity. This means GDS can be mitigated simply by updating microcode and leaving the new control bit alone. Second, GDS has a "lock" bit. This lock bit is there because the mitigation affects the hardware security features KeyLocker and SGX. It needs to be enabled and *STAY* enabled for these features to be mitigated against GDS. The mitigation is enabled in the microcode by default. Disable it by setting gather_data_sampling=off or by disabling all mitigations with mitigations=off. The mitigation status can be checked by reading: /sys/devices/system/cpu/vulnerabilities/gather_data_sampling Signed-off-by: Daniel Sneddon Signed-off-by: Dave Hansen Acked-by: Josh Poimboeuf Signed-off-by: Daniel Sneddon Signed-off-by: Greg Kroah-Hartman

xen: speed up grant-table reclaim

2023-08-03T08:26:09+00:00

commit c04e9894846c663f3278a414f34416e6e45bbe68 upstream. When a grant entry is still in use by the remote domain, Linux must put it on a deferred list. Normally, this list is very short, because the PV network and block protocols expect the backend to unmap the grant first. However, Qubes OS's GUI protocol is subject to the constraints of the X Window System, and as such winds up with the frontend unmapping the window first. As a result, the list can grow very large, resulting in a massive memory leak and eventual VM freeze. To partially solve this problem, make the number of entries that the VM will attempt to free at each iteration tunable. The default is still 10, but it can be overridden via a module parameter. This is Cc: stable because (when combined with appropriate userspace changes) it fixes a severe performance and stability problem for Qubes OS users. Cc: stable@vger.kernel.org Signed-off-by: Demi Marie Obenour Reviewed-by: Juergen Gross Link: https://lore.kernel.org/r/20230726165354.1252-1-demi@invisiblethingslab.com Signed-off-by: Juergen Gross Signed-off-by: Greg Kroah-Hartman

usb: misc: eud: Fix eud sysfs path (use 'qcom_eud')

2023-07-19T14:36:32+00:00

[ Upstream commit f16135918b5f8b510db014ecf0a069e34c02382e ] The eud sysfs enablement path is currently mentioned in the Documentation as: /sys/bus/platform/drivers/eud/.../enable Instead it should be: /sys/bus/platform/drivers/qcom_eud/.../enable Fix the same. Fixes: 9a1bf58ccd44 ("usb: misc: eud: Add driver support for Embedded USB Debugger(EUD)") Reviewed-by: Konrad Dybcio Acked-by: Manivannan Sadhasivam Signed-off-by: Bhupesh Sharma Link: https://lore.kernel.org/r/20230517211756.2483552-2-bhupesh.sharma@linaro.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

Merge tag 'dmaengine-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

2023-05-03T18:11:56+00:00

Pull dmaengine updates from Vinod Koul: "New support: - Apple admac t8112 device support - StarFive JH7110 DMA controller Updates: - Big pile of idxd updates to support IAA 2.0 device capabilities, DSA 2.0 Event Log and completion record faulting features and new DSA operations - at_xdmac supend & resume updates and driver code cleanup - k3-udma supend & resume support - k3-psil thread support for J784s4" * tag 'dmaengine-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (57 commits) dmaengine: idxd: add per wq PRS disable dmaengine: idxd: add pid to exported sysfs attribute for opened file dmaengine: idxd: expose fault counters to sysfs dmaengine: idxd: add a device to represent the file opened dmaengine: idxd: add per file user counters for completion record faults dmaengine: idxd: process batch descriptor completion record faults dmaengine: idxd: add descs_completed field for completion record dmaengine: idxd: process user page faults for completion record dmaengine: idxd: add idxd_copy_cr() to copy user completion record during page fault handling dmaengine: idxd: create kmem cache for event log fault items dmaengine: idxd: add per DSA wq workqueue for processing cr faults dmanegine: idxd: add debugfs for event log dump dmaengine: idxd: add interrupt handling for event log dmaengine: idxd: setup event log configuration dmaengine: idxd: add event log size sysfs attribute dmaengine: idxd: make misc interrupt one shot dt-bindings: dma: snps,dw-axi-dmac: constrain the items of resets for JH7110 dma dt-bindings: dma: Drop unneeded quotes dmaengine: at_xdmac: align declaration of ret with the rest of variables dmaengine: at_xdmac: add a warning message regarding for unpaused channels ...

Merge tag 'mfd-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

2023-05-02T17:41:31+00:00

Pull MFD updates from Lee Jones: "New Drivers: - Add support for Renesas RZ/G2L MTU3 New Device Support: - Add support for Lenovo Yoga Book X90F to Intel CHT WC - Add support for MAX5970 and MAX5978 to Simple MFD (I2C) - Add support for Meteor Lake PCH-S LPSS PCI to Intel LPSS PCI - Add support for AXP15060 PMIC to X-Powers PMIC collection Remove Device Support: - Remove support for Samsung 5M8751 and S5M8763 PMIC devices New Functionality: - Convert deprecated QCOM IRQ Chip to config registers - Add support for 32-bit address spaces to Renesas SMUs Fix-ups: - Make use of APIs / MACROs designed to simplify and demystify - Add / improve Device Tree bindings - Memory saving struct layout optimisations - Remove old / deprecated functionality - Factor out unassigned register addresses from ranges - Trivial: Spelling fixes, renames and coding style fixes - Rid 'defined but not used' warnings - Remove ineffective casts and pointer stubs Bug Fixes: - Fix incorrectly non-inverted mask/unmask IRQs on QCOM platforms - Remove MODULE_*() helpers from non-tristate drivers - Do not attempt to use out-of-range memory addresses associated with io_base - Provide missing export helpers - Fix remap bulk read optimisation fallout - Fix memory leak issues in error paths" * tag 'mfd-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (88 commits) dt-bindings: mfd: ti,j721e-system-controller: Add SoC chip ID leds: bd2606mvv: Driver for the Rohm 6 Channel i2c LED driver dt-bindings: mfd: qcom,spmi-pmic: Document flash LED controller dt-bindings: mfd: x-powers,axp152: Document the AXP15060 variant mfd: axp20x: Add support for AXP15060 PMIC dt-bindings: mfd: x-powers,axp152: Document the AXP313a variant counter: rz-mtu3-cnt: Unlock on error in rz_mtu3_count_ceiling_write() dt-bindings: mfd: dlg,da9063: Document voltage monitoring dt-bindings: mfd: stm32: Remove unnecessary blank lines dt-bindings: mfd: qcom,spmi-pmic: Use generic ADC node name in examples dt-bindings: mfd: syscon: Add nuvoton,ma35d1-sys compatible MAINTAINERS: Add entries for Renesas RZ/G2L MTU3a counter driver counter: Add Renesas RZ/G2L MTU3a counter driver Documentation: ABI: sysfs-bus-counter: add cascade_counts_enable and external_input_phase_clock_select mfd: Add Renesas RZ/G2L MTU3a core driver dt-bindings: timer: Document RZ/G2L MTU3a bindings mfd: rsmu_i2c: Convert to i2c's .probe_new() again mfd: intel-lpss: Add Intel Meteor Lake PCH-S LPSS PCI IDs mfd: dln2: Fix memory leak in dln2_probe() mfd: axp20x: Fix axp288 writable-ranges ...

Merge tag 'iommu-updates-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2023-04-30T20:00:38+00:00

Pull iommu updates from Joerg Roedel: - Convert to platform remove callback returning void - Extend changing default domain to normal group - Intel VT-d updates: - Remove VT-d virtual command interface and IOASID - Allow the VT-d driver to support non-PRI IOPF - Remove PASID supervisor request support - Various small and misc cleanups - ARM SMMU updates: - Device-tree binding updates: * Allow Qualcomm GPU SMMUs to accept relevant clock properties * Document Qualcomm 8550 SoC as implementing an MMU-500 * Favour new "qcom,smmu-500" binding for Adreno SMMUs - Fix S2CR quirk detection on non-architectural Qualcomm SMMU implementations - Acknowledge SMMUv3 PRI queue overflow when consuming events - Document (in a comment) why ATS is disabled for bypass streams - AMD IOMMU updates: - 5-level page-table support - NUMA awareness for memory allocations - Unisoc driver: Support for reattaching an existing domain - Rockchip driver: Add missing set_platform_dma_ops callback - Mediatek driver: Adjust the dma-ranges - Various other small fixes and cleanups * tag 'iommu-updates-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (82 commits) iommu: Remove iommu_group_get_by_id() iommu: Make iommu_release_device() static iommu/vt-d: Remove BUG_ON in dmar_insert_dev_scope() iommu/vt-d: Remove a useless BUG_ON(dev->is_virtfn) iommu/vt-d: Remove BUG_ON in map/unmap() iommu/vt-d: Remove BUG_ON when domain->pgd is NULL iommu/vt-d: Remove BUG_ON in handling iotlb cache invalidation iommu/vt-d: Remove BUG_ON on checking valid pfn range iommu/vt-d: Make size of operands same in bitwise operations iommu/vt-d: Remove PASID supervisor request support iommu/vt-d: Use non-privileged mode for all PASIDs iommu/vt-d: Remove extern from function prototypes iommu/vt-d: Do not use GFP_ATOMIC when not needed iommu/vt-d: Remove unnecessary checks in iopf disabling path iommu/vt-d: Move PRI handling to IOPF feature path iommu/vt-d: Move pfsid and ats_qdep calculation to device probe path iommu/vt-d: Move iopf code from SVA to IOPF enabling path iommu/vt-d: Allow SVA with device-specific IOPF dmaengine: idxd: Add enable/disable device IOPF feature arm64: dts: mt8186: Add dma-ranges for the parent "soc" node ...

Merge tag 'cxl-for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

2023-04-30T18:51:51+00:00

Pull compute express link updates from Dan Williams: "DOE support is promoted from drivers/cxl/ to drivers/pci/ with Bjorn's blessing, and the CXL core continues to mature its media management capabilities with support for listing and injecting media errors. Some late fixes that missed v6.3-final are also included: - Refactor the DOE infrastructure (Data Object Exchange PCI-config-cycle mailbox) to be a facility of the PCI core rather than the CXL core. This is foundational for upcoming support for PCI device-attestation and PCIe / CXL link encryption. - Add support for retrieving and injecting poison for CXL memory expanders. This enabling uses trace-events to convey CXL media error records to user tooling. It includes translation of device-local addresses (DPA) to system physical addresses (SPA) and their corresponding CXL region. - Fixes for decoder enumeration that missed v6.3-final - Miscellaneous fixups" * tag 'cxl-for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (38 commits) cxl/test: Add mock test for set_timestamp cxl/mbox: Update CMD_RC_TABLE tools/testing/cxl: Require CONFIG_DEBUG_FS tools/testing/cxl: Add a sysfs attr to test poison inject limits tools/testing/cxl: Use injected poison for get poison list tools/testing/cxl: Mock the Clear Poison mailbox command tools/testing/cxl: Mock the Inject Poison mailbox command cxl/mem: Add debugfs attributes for poison inject and clear cxl/memdev: Trace inject and clear poison as cxl_poison events cxl/memdev: Warn of poison inject or clear to a mapped region cxl/memdev: Add support for the Clear Poison mailbox command cxl/memdev: Add support for the Inject Poison mailbox command tools/testing/cxl: Mock support for Get Poison List cxl/trace: Add an HPA to cxl_poison trace events cxl/region: Provide region info to the cxl_poison trace event cxl/memdev: Add trigger_poison_list sysfs attribute cxl/trace: Add TRACE support for CXL media-error records cxl/mbox: Add GET_POISON_LIST mailbox command cxl/mbox: Initialize the poison state cxl/mbox: Restrict poison cmds to debugfs cxl_raw_allow_all ...