linux/drivers/virt, branch v6.16

treewide, timers: Rename from_timer() to timer_container_of()

2025-06-08T07:07:37Z

Move this API to the canonical timer_*() namespace. [ tglx: Redone against pre rc1 ] Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/aB2X0jCKQO56WdMt@gmail.com

Merge tag 'char-misc-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2025-06-06T18:50:47Z

Pull char / misc / iio driver updates from Greg KH: "Here is the big char/misc/iio and other small driver subsystem pull request for 6.16-rc1. Overall, a lot of individual changes, but nothing major, just the normal constant forward progress of new device support and cleanups to existing subsystems. Highlights in here are: - Large IIO driver updates and additions and device tree changes - Android binder bugfixes and logfile fixes - mhi driver updates - comedi driver updates - counter driver updates and additions - coresight driver updates and additions - echo driver removal as there are no in-kernel users of it - nvmem driver updates - spmi driver updates - new amd-sbi driver "subsystem" and drivers added - rust miscdriver binding documentation fix - other small driver fixes and updates (uio, w1, acrn, hpet, xillybus, cardreader drivers, fastrpc and others) All of these have been in linux-next for quite a while with no reported problems" * tag 'char-misc-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (390 commits) binder: fix yet another UAF in binder_devices counter: microchip-tcb-capture: Add watch validation support dt-bindings: iio: adc: Add ROHM BD79100G iio: adc: add support for Nuvoton NCT7201 dt-bindings: iio: adc: add NCT7201 ADCs iio: chemical: Add driver for SEN0322 dt-bindings: trivial-devices: Document SEN0322 iio: adc: ad7768-1: reorganize driver headers iio: bmp280: zero-init buffer iio: ssp_sensors: optimalize -> optimize HID: sensor-hub: Fix typo and improve documentation iio: admv1013: replace redundant ternary operator with just len iio: chemical: mhz19b: Fix error code in probe() iio: adc: at91-sama5d2: use IIO_DECLARE_BUFFER_WITH_TS iio: accel: sca3300: use IIO_DECLARE_BUFFER_WITH_TS iio: adc: ad7380: use IIO_DECLARE_DMA_BUFFER_WITH_TS iio: adc: ad4695: rename AD4695_MAX_VIN_CHANNELS iio: adc: ad4695: use IIO_DECLARE_DMA_BUFFER_WITH_TS iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros iio: make IIO_DMA_MINALIGN minimum of 8 bytes ...

Merge branch 'for-6.16/tsm-mr' into tsm-next

2025-05-13T18:28:25Z

Pick up a couple fixes for issues noticed in linux-next (constification of bin_attrs and missing 'static').

tsm-mr: Fix init breakage after bin_attrs constification by scoping non-const pointers to init phase

2025-05-13T18:02:33Z

Commit 9bec944506fa ("sysfs: constify attribute_group::bin_attrs") enforced the ro-after-init principle by making elements of bin_attrs_new pointing to const. To align with this change, introduce a temporary variable `bap` within the initialization loop. This improves code clarity by explicitly marking the initialization scope and eliminates the need for type casts when assigning to bin_attrs_new. Signed-off-by: Cedric Xing Link: https://patch.msgid.link/20250513164154.10109-1-cedric.xing@intel.com Signed-off-by: Dan Williams

Merge branch 'for-6.16/tsm-mr' into tsm-next

2025-05-13T05:12:44Z

Merge measurement-register infrastructure for v6.16. Resolve conflicts with the establishment of drivers/virt/coco/guest/ for cross-vendor common TSM functionality. Address a mis-merge with a fixup from Lukas: Link: http://lore.kernel.org/20250509134031.70559-1-lukas.bulwahn@redhat.com

virt: tdx-guest: Transition to scoped_cond_guard for mutex operations

2025-05-09T02:17:43Z

Replace mutex_lock_interruptible()/mutex_unlock() with scoped_cond_guard to enhance code readability and maintainability. Signed-off-by: Cedric Xing Acked-by: Dionna Amalie Glaze Link: https://patch.msgid.link/20250506-tdx-rtmr-v6-7-ac6ff5e9d58a@intel.com Signed-off-by: Dan Williams

virt: tdx-guest: Refactor and streamline TDREPORT generation

2025-05-09T02:17:43Z

Consolidate instances (code segments) of TDREPORT generation to improve readability and maintainability, by refactoring each instance into invoking a unified subroutine throughout the TDX guest driver. Implement proper locking around TDG.MR.REPORT and TDG.MR.RTMR.EXTEND to avoid race inside the TDX module. Preallocate TDREPORT buffer to reduce overhead in subsequent TDREPORT generation. Signed-off-by: Cedric Xing Acked-by: Dionna Amalie Glaze Link: https://patch.msgid.link/20250506-tdx-rtmr-v6-6-ac6ff5e9d58a@intel.com Signed-off-by: Dan Williams

virt: tdx-guest: Expose TDX MRs as sysfs attributes

2025-05-09T02:17:43Z

Expose the most commonly used TDX MRs (Measurement Registers) as sysfs attributes. Use the ioctl() interface of /dev/tdx_guest to request a full TDREPORT for access to other TD measurements. Directory structure of TDX MRs inside a TDVM is as follows: /sys/class/misc/tdx_guest └── measurements ├── mrconfigid ├── mrowner ├── mrownerconfig ├── mrtd:sha384 ├── rtmr0:sha384 ├── rtmr1:sha384 ├── rtmr2:sha384 └── rtmr3:sha384 Read the file/attribute to retrieve the current value of an MR. Write to the file/attribute (if writable) to extend the corresponding RTMR. Refer to Documentation/ABI/testing/sysfs-devices-virtual-misc-tdx_guest for more information. Signed-off-by: Cedric Xing Acked-by: Dionna Amalie Glaze [djbw: fixup exit order] Link: https://patch.msgid.link/20250508010606.4129953-1-dan.j.williams@intel.com Signed-off-by: Dan Williams

tsm-mr: Add TVM Measurement Register support

2025-05-09T02:17:33Z

Introduce new TSM Measurement helper library (tsm-mr) for TVM guest drivers to expose MRs (Measurement Registers) as sysfs attributes, with Crypto Agility support. Add the following new APIs (see include/linux/tsm-mr.h for details): - tsm_mr_create_attribute_group(): Take on input a `struct tsm_measurements` instance, which includes one `struct tsm_measurement_register` per MR with properties like `TSM_MR_F_READABLE` and `TSM_MR_F_WRITABLE`, to determine the supported operations and create the sysfs attributes accordingly. On success, return a `struct attribute_group` instance that will typically be included by the guest driver into `miscdevice.groups` before calling misc_register(). - tsm_mr_free_attribute_group(): Free the memory allocated to the attrubute group returned by tsm_mr_create_attribute_group(). tsm_mr_create_attribute_group() creates one attribute for each MR, with names following this pattern: MRNAME[:HASH] - MRNAME - Placeholder for the MR name, as specified by `tsm_measurement_register.mr_name`. - :HASH - Optional suffix indicating the hash algorithm associated with this MR, as specified by `tsm_measurement_register.mr_hash`. Support Crypto Agility by allowing multiple definitions of the same MR (i.e., with the same `mr_name`) with distinct HASH algorithms. NOTE: Crypto Agility, introduced in TPM 2.0, allows new hash algorithms to be introduced without breaking compatibility with applications using older algorithms. CC architectures may face the same challenge in the future, needing new hashes for security while retaining compatibility with older hashes, hence the need for Crypto Agility. Signed-off-by: Cedric Xing Reviewed-by: Dan Williams Acked-by: Dionna Amalie Glaze [djbw: fixup bin_attr const conflict] Link: https://patch.msgid.link/20250509020739.882913-1-dan.j.williams@intel.com Signed-off-by: Dan Williams

Merge branch 'for-6.16/tsm' into tsm-next

2025-05-09T01:12:06Z

Pick up the drivers/virt/coco/guest/ split in preparation for TSM host drivers.