kernel/linux.git/Documentation/arch/powerpc, branch v6.18.22

Merge tag 'docs-6.18' of git://git.lwn.net/linux

2025-10-04T00:16:13+00:00

Pull documentation updates from Jonathan Corbet: "It has been a relatively busy cycle in docsland, with changes all over: - Bring the kernel memory-model docs into the Sphinx build in the "literal include" mode. - Lots of build-infrastructure work, further cleaning up long-term kernel-doc technical debt. The sphinx-pre-install tool has been converted to Python and updated for current systems. - A new tool to detect when documents have been moved and generate HTML redirects; this can be used on kernel.org (or any other site hosting the rendered docs) to avoid breaking links. - Automated processing of the YAML files describing the netlink protocol. - A significant update of the maintainer's PGP guide. ... and a seemingly endless series of typo fixes, build-problem fixes, etc" * tag 'docs-6.18' of git://git.lwn.net/linux: (193 commits) Documentation/features: Update feature lists for 6.17-rc7 docs: remove cdomain.py Documentation/process: submitting-patches: fix typo in "were do" docs: dev-tools/lkmm: Fix typo of missing file extension Documentation: trace: histogram: Convert ftrace docs cross-reference Documentation: trace: histogram-design: Wrap introductory note in note:: directive Documentation: trace: historgram-design: Separate sched_waking histogram section heading and the following diagram Documentation: trace: histogram-design: Trim trailing vertices in diagram explanation text Documentation: trace: histogram: Fix histogram trigger subsection number order docs: driver-api: fix spelling of "buses". Documentation: fbcon: Use admonition directives Documentation: fbcon: Reindent 8th step of attach/detach/unload Documentation: fbcon: Add boot options and attach/detach/unload section headings docs: filesystems: sysfs: add remaining top level sysfs directory descriptions docs: filesystems: sysfs: clarify symlink destinations in dev and bus/devices descriptions docs: filesystems: sysfs: remove top level sysfs net directory docs: maintainer: Fix ambiguous subheading formatting docs: kdoc: a few more dump_typedef() tweaks docs: kdoc: remove redundant comment stripping in dump_typedef() docs: kdoc: remove some dead code in dump_typedef() ...

powerpc/perf/vpa-dtl: Add documentation for VPA dispatch trace log PMU

2025-09-22T09:18:57+00:00

Documentation for vpa-dtl (Virtual Processor Area - Dispatch Trace Log) PMU interface. And how it can be used to collect the distrace trace log entries in perf data, how to process/report as part of perf report/perf script. Signed-off-by: Athira Rajeev Tested-by: Tejas Manhas Tested-by: Venkat Rao Bagalkote Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250915102947.26681-8-atrajeev@linux.ibm.com

docs: Remove remainders of reiserfs

2025-08-18T16:45:43+00:00

Reiserfs has been removed in 6.13, there are still some mentions in the documentation about it and the tools. Remove those that don't seem relevant anymore but keep references to reiserfs' r5 hash used by some code. There's one change in a script scripts/selinux/install_policy.sh but it does not seem to be relevant either. Signed-off-by: David Sterba Acked-by: Paul Moore Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20250813100053.1291961-1-dsterba@suse.com

docs: powerpc: Add htm.rst to table of contents

2025-06-09T20:59:35+00:00

Fix the following documentation build error, which was introduced when Documentation/arch/powerpc/htm.rst was added to the repository without any reference to the document. Documentation/arch/powerpc/htm.rst: WARNING: document isn't included in any toctree [toc.not_included] Fixes: ab1456c5aa7a ("powerpc/pseries/htmdump: Add documentation for H_HTM debugfs interface") Acked-by: Randy Dunlap Tested-by: Randy Dunlap Signed-off-by: Brigham Campbell Tested-by: Athira Rajeev Fixes: ab1456c5aa7a63d5 ("powerpc/pseries/htmdump: Add documentation for H_HTM debugfs interface") Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20250528054146.2658537-2-me@brighamcampbell.com

powerpc/pseries/htmdump: Add documentation for H_HTM debugfs interface

2025-05-04T03:35:47+00:00

Documentation for HTM (Hardware Trace Macro) debugfs interface and how it can be used to configure/control the HTM operations. Signed-off-by: Athira Rajeev Tested-by: Venkat Rao Bagalkote Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250420180844.53128-10-atrajeev@linux.ibm.com

powerpc: Document APIv2 KVM hcall spec for Hostwide counters

2025-04-16T16:46:09+00:00

Update kvm-nested APIv2 documentation to include five new Guest-State-Elements to fetch the hostwide counters. These counters are per L1-Lpar and indicate the amount of Heap/Page-table memory allocated, available and Page-table memory reclaimed for all L2-Guests active instances Reviewed-by: Bagas Sanjaya Tested-by: Gautam Menghani Signed-off-by: Vaibhav Jain Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250416162740.93143-2-vaibhav@linux.ibm.com

Merge branch 'topic/cxl' into next

2025-04-02T00:07:44+00:00

This merges in the removal of the IBM CAPI "cxl" driver.

Merge tag 'powerpc-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2025-03-28T02:39:08+00:00

Pull powerpc updates from Madhavan Srinivasan: - Remove support for IBM Cell Blades - SMP support for microwatt platform - Support for inline static calls on PPC32 - Enable pmu selftests for power11 platform - Enable hardware trace macro (HTM) hcall support - Support for limited address mode capability - Changes to RMA size from 512 MB to 768 MB to handle fadump - Misc fixes and cleanups Thanks to Abhishek Dubey, Amit Machhiwal, Andreas Schwab, Arnd Bergmann, Athira Rajeev, Avnish Chouhan, Christophe Leroy, Disha Goel, Donet Tom, Gaurav Batra, Gautam Menghani, Hari Bathini, Kajol Jain, Kees Cook, Mahesh Salgaonkar, Michael Ellerman, Paul Mackerras, Ritesh Harjani (IBM), Sathvika Vasireddy, Segher Boessenkool, Sourabh Jain, Vaibhav Jain, and Venkat Rao Bagalkote. * tag 'powerpc-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (61 commits) powerpc/kexec: fix physical address calculation in clear_utlb_entry() crypto: powerpc: Mark ghashp8-ppc.o as an OBJECT_FILES_NON_STANDARD powerpc: Fix 'intra_function_call not a direct call' warning powerpc/perf: Fix ref-counting on the PMU 'vpa_pmu' KVM: PPC: Enable CAP_SPAPR_TCE_VFIO on pSeries KVM guests powerpc/prom_init: Fixup missing #size-cells on PowerBook6,7 powerpc/microwatt: Add SMP support powerpc: Define config option for processors with broadcast TLBIE powerpc/microwatt: Define an idle power-save function powerpc/microwatt: Device-tree updates powerpc/microwatt: Select COMMON_CLK in order to get the clock framework net: toshiba: Remove reference to PPC_IBM_CELL_BLADE net: spider_net: Remove powerpc Cell driver cpufreq: ppc_cbe: Remove powerpc Cell driver genirq: Remove IRQ_EDGE_EOI_HANDLER docs: Remove reference to removed CBE_CPUFREQ_SPU_GOVERNOR powerpc: Remove UDBG_RTAS_CONSOLE powerpc/io: Use standard barrier macros in io.c powerpc/io: Rename _insw_ns() etc. powerpc/io: Use generic raw accessors ...

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2025-03-27T02:57:34+00:00

Pull SCSI updates from James Bottomley: "Updates to the usual drivers (scsi_debug, ufs, lpfc, st, fnic, mpi3mr, mpt3sas) and the removal of cxlflash. The only non-trivial core change is an addition to unit attention handling to recognize UAs for power on/reset and new media so the tape driver can use it" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (107 commits) scsi: st: Tighten the page format heuristics with MODE SELECT scsi: st: ERASE does not change tape location scsi: st: Fix array overflow in st_setup() scsi: target: tcm_loop: Fix wrong abort tag scsi: lpfc: Restore clearing of NLP_UNREG_INP in ndlp->nlp_flag scsi: hisi_sas: Fixed failure to issue vendor specific commands scsi: fnic: Remove unnecessary NUL-terminations scsi: fnic: Remove redundant flush_workqueue() calls scsi: core: Use a switch statement when attaching VPD pages scsi: ufs: renesas: Add initialization code for R-Car S4-8 ES1.2 scsi: ufs: renesas: Add reusable functions scsi: ufs: renesas: Refactor 0x10ad/0x10af PHY settings scsi: ufs: renesas: Remove register control helper function scsi: ufs: renesas: Add register read to remove save/set/restore scsi: ufs: renesas: Replace init data by init code scsi: ufs: dt-bindings: renesas,ufs: Add calibration data scsi: mpi3mr: Task Abort EH Support scsi: storvsc: Don't report the host packet status as the hv status scsi: isci: Make most module parameters static scsi: megaraid_sas: Make most module parameters static ...

cxl: Remove driver

2025-03-16T11:04:27+00:00

Remove the cxl driver that provides support for the IBM Coherent Accelerator Processor Interface. Revert or clean up associated code in arch/powerpc that is no longer necessary. cxl has received minimal maintenance for several years, and is not supported on the Power10 processor. We aren't aware of any users who are likely to be using recent kernels. Thanks to Mikey Neuling, Ian Munsie, Daniel Axtens, Frederic Barrat, Christophe Lombard, Philippe Bergheaud, Vaibhav Jain and Alastair D'Silva for their work on this driver over the years. Signed-off-by: Andrew Donnellan Acked-by: Frederic Barrat Acked-by: Madhavan Srinivasan Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20250219070007.177725-2-ajd@linux.ibm.com