Changes in Makefile

12376084 - s390/ap: modularize ap bus

Mon, 19 Feb 2024 17:10:19 +0000

s390/ap: modularize ap busThere is no hard requirement to have the ap bus statically in thekernel, so add an option to compile it as module.Cc: Tony Krowiak Cc: Halil Pasic Signed-off-by: Holger Dengler Reviewed-by: Harald Freudenberger Reviewed-by: Anthony Krowiak Signed-off-by: Alexander Gordeev List of files: /linux-6.15/drivers/s390/char/Makefile

9603cb33 - s390/tty3270: rename to con3270

Mon, 28 Nov 2022 18:35:40 +0000

s390/tty3270: rename to con3270Rename the driver file to con3270 to be in sync with con3215.c.This removes CONFIG_TN3270_TTY, it is now always build if CONFIG_TN3270is enabled.Signed-off-by: Sven Schnelle Acked-by: Heiko Carstens Tested-by: Niklas Schnelle Signed-off-by: Heiko Carstens List of files: /linux-6.15/drivers/s390/char/Makefile

c17fe081 - s390/3270: unify con3270 + tty3270

Mon, 28 Nov 2022 18:22:28 +0000

s390/3270: unify con3270 + tty3270There were two flavours of 3270 drivers: con3270, which provides aconsole driver, and tty3270 providing a tty driver. A user could switchwith PF3 between the two views. While this sounds nice, it's a bitannoying: If the user enters a command which triggers a kernel message,he always has to switch back and forth to see the message. Unify bothviews to have kernel messages and tty in one screen, like it is on almostall other platforms. This also has the nice side effect of removing a lotof duplicate code.Signed-off-by: Sven Schnelle Acked-by: Heiko Carstens Tested-by: Niklas Schnelle Signed-off-by: Heiko Carstens List of files: /linux-6.15/drivers/s390/char/Makefile

4689752c - drivers/s390/char: Add Ultravisor io device

Mon, 16 May 2022 11:33:35 +0000

drivers/s390/char: Add Ultravisor io deviceThis patch adds a new miscdevice to expose some Ultravisor functionsto userspace. Userspace can send IOCTLs to the uvdevice that will thenemit a corresponding Ultravisor Call and hands the result over touserspace. The uvdevice is available if the Ultravisor Call facility ispresent.Userspace can call the Retrieve Attestation MeasurementUltravisor Call using IOCTLs on the uvdevice.The uvdevice will do some sanity checks first.Then, copy the request data to kernel space, build the UVCB,perform the UV call, and copy the result back to userspace.Signed-off-by: Steffen Eiden Reviewed-by: Janosch Frank Reviewed-by: Claudio Imbrenda Link: https://lore.kernel.org/kvm/20220516113335.338212-1-seiden@linux.ibm.com/Message-Id: <20220516113335.338212-1-seiden@linux.ibm.com>Signed-off-by: Janosch Frank (whitespace and tristate fixes, pick) List of files: /linux-6.15/drivers/s390/char/Makefile

0671cc10 - s390/sclp: Add support for SCLP AP adapter config/deconfig

Mon, 27 Jul 2020 12:34:57 +0000

s390/sclp: Add support for SCLP AP adapter config/deconfigAdd support for AP bus adapter config and deconfig to the sclpcore code. The code is statically build into the kernel whenZCRYPT is configured either as module or with static support.This is the base functionality for having configure/deconfiguresupport in the AP bus and card code. Another patch will exploitthis soon.Signed-off-by: Harald Freudenberger Suggested-by: Pierre Morel Signed-off-by: Vasily Gorbik List of files: /linux-6.15/drivers/s390/char/Makefile

2e83e0eb - s390: clean .bss before running uncompressed kernel

Sun, 11 Aug 2019 18:55:18 +0000

s390: clean .bss before running uncompressed kernelClean uncompressed kernel .bss section in the startup code beforethe uncompressed kernel is executed. At this point of time initrd andcertificates have been already rescued. Uncompressed kernel .bss sizeis known from vmlinux_info. It is also taken into consideration duringuncompressed kernel positioning by kaslr (so it is safe to clean it).With that uncompressed kernel is starting with .bss section zeroed andno .bss section usage restrictions apply. Which makes chkbss checks foruncompressed kernel objects obsolete and they can be removed.early_nobss.c is also not needed anymore. Parts of it which are stillrelevant are moved to early.c. Kasan initialization code is now calleddirectly from head64 (early.c is instrumented and should not beexecuted before kasan shadow memory is set up).Reviewed-by: Philipp Rudo Signed-off-by: Vasily Gorbik List of files: /linux-6.15/drivers/s390/char/Makefile

191fa92b - s390/sclp: remove call home support

Mon, 17 Jun 2019 12:02:40 +0000

s390/sclp: remove call home supportThis feature has never been used, so remove it.Acked-by: Vasily Gorbik Acked-by: Hendrik Brueckner Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik List of files: /linux-6.15/drivers/s390/char/Makefile

0a9b4091 - s390/kasan: avoid instrumentation of early C code

Fri, 17 Nov 2017 12:10:33 +0000

s390/kasan: avoid instrumentation of early C codeInstrumented C code cannot run without the kasan shadow area. Exemptsource code files from kasan which are running before / used duringkasan initialization.Reviewed-by: Martin Schwidefsky Signed-off-by: Vasily Gorbik Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

a1d7d91f - s390/decompressor: avoid reusing uncompressed image objects

Tue, 12 Jun 2018 13:52:01 +0000

s390/decompressor: avoid reusing uncompressed image objectsRe-compile ebcdic.c and sclp_early_core.c for the decompressor,using proper decompressor CFLAGS. This also allows to potentially useinstrumentation for those files when built for the main kernel image.With kbuild there is no easy way to re-compile a source file fromanother directory. Bypass ugly rules and Makefile meta-programmingwith relative path includes of original files.Reviewed-by: Heiko Carstens Signed-off-by: Vasily Gorbik Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

0391fcb5 - s390: introduce compile time check for empty .bss section

Thu, 03 May 2018 14:40:13 +0000

s390: introduce compile time check for empty .bss sectionIntroduce compile time check for files which should avoid using .bsssection, because of the following reasons:- .bss section has not been zeroed yet,- initrd has not been moved to a safe location and could be overlappingwith .bss section.Reviewed-by: Heiko Carstens Signed-off-by: Vasily Gorbik Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

66aec647 - s390/sclp: Add support for Store Data SCLP interface

Mon, 13 Feb 2017 12:38:17 +0000

s390/sclp: Add support for Store Data SCLP interfaceAdd functions to retrieve data associated with an SCLP Store Dataentity. Automatically retrieve data for the "config" entity duringboot and make that data available to user-space via sysfs: /sys/firmware/sclp_sd/config/data Reading from this file will return config data contents. /sys/firmware/sclp_sd/config/reload Writing to this file will cause the latest version of data related to the config entity to be read from the SCLP interface.Generate a KOBJ_CHANGE whenever new data is retrieved.Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

f19fbd5e - s390: introduce execute-trampolines for branches

Fri, 26 Jan 2018 11:46:47 +0000

s390: introduce execute-trampolines for branchesAdd CONFIG_EXPOLINE to enable the use of the new -mindirect-branch= and-mfunction_return= compiler options to create a kernel fortified againstthe specte v2 attack.With CONFIG_EXPOLINE=y all indirect branches will be issued with anexecute type instruction. For z10 or newer the EXRL instruction willbe used, for older machines the EX instruction. The typical indirectcall basr %r14,%r1is replaced with a PC relative call to a new thunk brasl %r14,__s390x_indirect_jump_r1The thunk contains the EXRL/EX instruction to the indirect branch__s390x_indirect_jump_r1: exrl 0,0f j .0: br %r1The detour via the execute type instruction has a performance impact.To get rid of the detour the new kernel parameter "nospectre_v2" and"spectre_v2=[on,off,auto]" can be used. If the parameter is specifiedthe kernel and module code will be patched at runtime.Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

366d8216 - s390/sclp: disable FORTIFY_SOURCE for early sclp code

Wed, 13 Dec 2017 08:21:59 +0000

s390/sclp: disable FORTIFY_SOURCE for early sclp codeMichal Suchánek reported the following compile error withFORTIFY_SOURCE enabled:drivers/s390/char/sclp_early_core.o: In function `memcpy':include/linux/string.h:340: undefined reference to `fortify_panic'To fix this simply disable FORTIFY_SOURCE on the early sclp code aswell, which I forgot on the initial commit.Fixes: 79962038dffa ("s390: add support for FORTIFY_SOURCE")Reported-by: Michal Suchánek Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

b2441318 - License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Wed, 01 Nov 2017 14:07:57 +0000

License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseMany source files in the tree are missing licensing information, whichmakes it harder for compliance tools to determine the correct license.By default all files without license information are under the defaultlicense of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'SPDX license identifier. The SPDX identifier is a legally bindingshorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart andPhilippe Ombredanne.How this work was done:Patches were generated and checked against linux-4.14-rc6 for a subset ofthe use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up caseswhere non-standard license headers were used, and references to licensehad to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied toa file was done in a spreadsheet of side by side results from of theoutput of two independent scanners (ScanCode & Windriver) producing SPDXtag:value files created by Philippe Ombredanne. Philippe prepared thebase worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 filesassessed. Kate Stewart did a file by file comparison of the scannerresults in the spreadsheet to determine which SPDX license identifier(s)to be applied to the file. She confirmed any determination that was notimmediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines).All documentation files were explicitly excluded.The following heuristics were used to determine which SPDX licenseidentifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time.In total, over 70 hours of logged manual review was done on thespreadsheet to determine the SPDX license identifiers to apply to thesource files by Kate, Philippe, Thomas and, in some cases, confirmationby lawyers working with the Linux Foundation.Kate also obtained a third independent scan of the 4.13 code base fromFOSSology, and compared selected files where the other two scannersdisagreed against that SPDX file, to see if there was new insights. TheWindriver scanner is based on an older version of FOSSology in part, sothey are related.Thomas did random spot checks in about 500 files from the spreadsheetsfor the uapi headers and agreed with SPDX license identifier in thefiles he inspected. For the non-uapi files Thomas did random spot checksin about 15000 files.In initial set of patches against 4.14-rc6, 3 files were found to havecopy/paste license identifier errors, and have been fixed to reflect thecorrect identifier.Additionally Philippe spent 10 hours this week doing a detailed manualinspection and review of the 12,461 patched files from the initial patchversion early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correctThis produced a worksheet with 20 files needing minor correction. Thisworksheet was then exported into 3 different .csv files for thedifferent types of files to be modified.These .csv files were then reviewed by Greg. Thomas wrote a script toparse the csv files and add the proper SPDX tag to the file, in theformat that the file expected. This script was further refined by Gregbased on the output to detect more types of files automatically and todistinguish between header and source .c files (which need differentcomment types.) Finally Greg ran the script using the .csv files togenerate the patches.Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/s390/char/Makefile

9090f3fe - s390/sclp: move early printk code to drivers

Tue, 24 Jan 2017 14:45:13 +0000

s390/sclp: move early printk code to driversMove the early sclp printk code to the drivers folder where also therest of the sclp code can be found. This way it is possible to use thesclp private header files for further cleanups.Reviewed-by: Peter Oberparleiter Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

68dd13d6 - s390/sclp: move pci related commands to separate file

Fri, 27 Nov 2015 10:15:36 +0000

s390/sclp: move pci related commands to separate filesclp commands only used by the PCI code shouldn't be build for!CONFIG_PCI. Instead of adding more ifdefs to sclp_cmd.c justmove them to a new file.Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

155eeb66 - s390/sclp_cpi: remove sclp_cpi module in favor of sysfs interface

Wed, 04 Nov 2015 08:01:34 +0000

s390/sclp_cpi: remove sclp_cpi module in favor of sysfs interfaceSince commit c05ffc4f2b20 ("[S390] sclp: sysfs interface forSCLP cpi"), which was made 2008 the user can specify a systemand sysplex name through the /sys/firmware/cpi interface. Inaddition to sysplex and system name, the user can also overridethe system type and system version.Because the syfs interface is easier to use and allows thesettings to be updated, the sclp_cpi module becomes obsoleteand can be removed.Signed-off-by: Hendrik Brueckner Acked-by: Christian Borntraeger Acked-by: Heiko Carstens Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

ffa52d02 - s390/zcore: remove /sys/kernel/debug/zcore/mem

Wed, 28 Oct 2015 08:47:58 +0000

s390/zcore: remove /sys/kernel/debug/zcore/memNew versions of the SCSI dumper use the /dev/vmcore interface insteadof zcore mem. Remove the outdated interface.Acked-by: Michael Holzheu Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

8f933b10 - s390/hmcdrv: HMC drive CD/DVD access

Mon, 08 Apr 2013 07:52:57 +0000

s390/hmcdrv: HMC drive CD/DVD accessThis device driver allows accessing a HMC drive CD/DVD-ROM.It can be used in a LPAR and z/VM environment.Reviewed-by: Martin Schwidefsky Reviewed-by: Heiko Carstens Signed-off-by: Ralf Hoppe Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile

f7a94db4 - s390/watchdog: use watchdog API

Thu, 05 Jun 2014 09:01:43 +0000

s390/watchdog: use watchdog APIConverted the vmwatchdog driver to use the kernel's watchdog API.Signed-off-by: Philipp Hachtmann Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/drivers/s390/char/Makefile