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2020-10-16Merge tag 'powerpc-5.10-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - A series from Nick adding ARCH_WANT_IRQS_OFF_ACTIVATE_MM & selecting it for powerpc, as well as a related fix for sparc. - Remove support for PowerPC 601. - Some fixes for watchpoints & addition of a new ptrace flag for detecting ISA v3.1 (Power10) watchpoint features. - A fix for kernels using 4K pages and the hash MMU on bare metal Power9 systems with > 16TB of RAM, or RAM on the 2nd node. - A basic idle driver for shallow stop states on Power10. - Tweaks to our sched domains code to better inform the scheduler about the hardware topology on Power9/10, where two SMT4 cores can be presented by firmware as an SMT8 core. - A series doing further reworks & cleanups of our EEH code. - Addition of a filter for RTAS (firmware) calls done via sys_rtas(), to prevent root from overwriting kernel memory. - Other smaller features, fixes & cleanups. Thanks to: Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Athira Rajeev, Biwen Li, Cameron Berkenpas, Cédric Le Goater, Christophe Leroy, Christoph Hellwig, Colin Ian King, Daniel Axtens, David Dai, Finn Thain, Frederic Barrat, Gautham R. Shenoy, Greg Kurz, Gustavo Romero, Ira Weiny, Jason Yan, Joel Stanley, Jordan Niethe, Kajol Jain, Konrad Rzeszutek Wilk, Laurent Dufour, Leonardo Bras, Liu Shixin, Luca Ceresoli, Madhavan Srinivasan, Mahesh Salgaonkar, Nathan Lynch, Nicholas Mc Guire, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Pedro Miraglia Franco de Carvalho, Pratik Rajesh Sampat, Qian Cai, Qinglang Miao, Ravi Bangoria, Russell Currey, Satheesh Rajendran, Scott Cheloha, Segher Boessenkool, Srikar Dronamraju, Stan Johnson, Stephen Kitt, Stephen Rothwell, Thiago Jung Bauermann, Tyrel Datwyler, Vaibhav Jain, Vaidyanathan Srinivasan, Vasant Hegde, Wang Wensheng, Wolfram Sang, Yang Yingliang, zhengbin. * tag 'powerpc-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (228 commits) Revert "powerpc/pci: unmap legacy INTx interrupts when a PHB is removed" selftests/powerpc: Fix eeh-basic.sh exit codes cpufreq: powernv: Fix frame-size-overflow in powernv_cpufreq_reboot_notifier powerpc/time: Make get_tb() common to PPC32 and PPC64 powerpc/time: Make get_tbl() common to PPC32 and PPC64 powerpc/time: Remove get_tbu() powerpc/time: Avoid using get_tbl() and get_tbu() internally powerpc/time: Make mftb() common to PPC32 and PPC64 powerpc/time: Rename mftbl() to mftb() powerpc/32s: Remove #ifdef CONFIG_PPC_BOOK3S_32 in head_book3s_32.S powerpc/32s: Rename head_32.S to head_book3s_32.S powerpc/32s: Setup the early hash table at all time. powerpc/time: Remove ifdef in get_dec() and set_dec() powerpc: Remove get_tb_or_rtc() powerpc: Remove __USE_RTC() powerpc: Tidy up a bit after removal of PowerPC 601. powerpc: Remove support for PowerPC 601 powerpc: Remove PowerPC 601 powerpc: Drop SYNC_601() ISYNC_601() and SYNC() powerpc: Remove CONFIG_PPC601_SYNC_FIX ...
2020-10-06powerpc: switch 85xx defconfigs from legacy ide to libataChristoph Hellwig
Switch the 85xx defconfigs from the soon to be removed legacy ide driver to libata. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200924041310.520970-1-hch@lst.de
2020-09-14vgacon: remove software scrollback supportLinus Torvalds
Yunhai Zhang recently fixed a VGA software scrollback bug in commit ebfdfeeae8c0 ("vgacon: Fix for missing check in scrollback handling"), but that then made people look more closely at some of this code, and there were more problems on the vgacon side, but also the fbcon software scrollback. We don't really have anybody who maintains this code - probably because nobody actually _uses_ it any more. Sure, people still use both VGA and the framebuffer consoles, but they are no longer the main user interfaces to the kernel, and haven't been for decades, so these kinds of extra features end up bitrotting and not really being used. So rather than try to maintain a likely unused set of code, I'll just aggressively remove it, and see if anybody even notices. Maybe there are people who haven't jumped on the whole GUI badnwagon yet, and think it's just a fad. And maybe those people use the scrollback code. If that turns out to be the case, we can resurrect this again, once we've found the sucker^Wmaintainer for it who actually uses it. Reported-by: NopNop Nop <nopitydays@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Cc: 张云海 <zhangyunhai@nsfocus.com> Acked-by: Andy Lutomirski <luto@amacapital.net> Acked-by: Willy Tarreau <w@1wt.eu> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-29powerpc/configs: Add BLK_DEV_NVME to pseries_defconfigAnton Blanchard
I've forgotten to manually enable NVME when building pseries kernels for machines with NVME adapters. Since it's a reasonably common configuration, enable it by default. Signed-off-by: Anton Blanchard <anton@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200729040828.2312966-1-anton@ozlabs.org
2020-07-29powerpc/configs: Remove dead symbolsMichael Ellerman
Remove references to symbols that no longer exist as reported by scripts/checkkconfigsymbols.py. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724131728.1643966-2-mpe@ellerman.id.au
2020-07-29powerpc/configs: Drop old symbols from ppc6xx_defconfigMichael Ellerman
ppc6xx_defconfig refers to quite a few symbols that no longer exist, as reported by scripts/checkkconfigsymbols.py, remove them. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724131728.1643966-1-mpe@ellerman.id.au
2020-07-22powerpc/64s/hash: Disable subpage_prot syscall by defaultNicholas Piggin
The subpage_prot syscall was added for specialised system software (Lx86) that has been discontinued for about 7 years, and is not thought to be used elsewhere, so disable it by default. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200703011958.1166620-4-npiggin@gmail.com
2020-07-06powerpc: Drop CONFIG_MTD_M25P80 in 85xx-hw.configBin Meng
Drop CONFIG_MTD_M25P80 that was removed in commit b35b9a10362d ("mtd: spi-nor: Move m25p80 code in spi-nor.c") Signed-off-by: Bin Meng <bin.meng@windriver.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1588394694-517-1-git-send-email-bmeng.cn@gmail.com
2020-06-22powerpc/configs: Remove CMDLINE_BOOLChris Packham
Regenerate defconfigs to remove CONFIG_CMDLINE_BOOL and the default CONFIG_CMDLINE where applicable. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200611224220.25066-3-chris.packham@alliedtelesis.co.nz
2020-06-02powerpc/configs: Add LIBNVDIMM to ppc64_defconfigMichael Neuling
This gives us OF_PMEM which is useful in mambo. This adds 153K to the text of ppc64le_defconfig which 0.8% of the total text. LIBNVDIMM text data bss dec hex Without 18574833 5518150 1539240 25632223 1871ddf With 18727834 5546206 1539368 25813408 189e1a0 Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200519043009.3081885-1-mikey@neuling.org
2020-06-02powerpc/configs/64s: Enable CONFIG_PRINTK_CALLERMichael Ellerman
This adds the CPU or thread number to printk messages. This helps a lot when deciphering concurrent oopses that have been interleaved. Example output, of PID1 (T1) triggering a warning: [ 1.581678][ T1] WARNING: CPU: 0 PID: 1 at crypto/rsa-pkcs1pad.c:539 pkcs1pad_verify+0x38/0x140 [ 1.581681][ T1] Modules linked in: [ 1.581693][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.5.0-rc5-gcc-8.2.0-00121-gf84c2e595927-dirty #1515 [ 1.581700][ T1] NIP: c000000000207d64 LR: c000000000207d3c CTR: c000000000207d2c [ 1.581708][ T1] REGS: c0000000fd2e7560 TRAP: 0700 Not tainted (5.5.0-rc5-gcc-8.2.0-00121-gf84c2e595927-dirty) [ 1.581712][ T1] MSR: 9000000000029033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 44000222 XER: 00040000 Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200520121257.961112-1-mpe@ellerman.id.au
2020-05-28powerpc/40x: Remove EP405Christophe Leroy
EP405 is an old type of board based on a 405GP which is obsolete. Remove it. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/e9534caa51f327c841b3db5f48043a47ad70d246.1590079968.git.christophe.leroy@csgroup.eu
2020-05-28powerpc/40x: Remove WALNUTChristophe Leroy
CONFIG_WALNUT is not selected by any config and is based on 405GP which is obsolete. Remove it. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/ab46013d8d33346af68faf30a719a586c3befad9.1590079968.git.christophe.leroy@csgroup.eu
2020-05-28powerpc: Remove Xilinx PPC405/PPC440 supportMichal Simek
The latest Xilinx design tools called ISE and EDK has been released in October 2013. New tool doesn't support any PPC405/PPC440 new designs. These platforms are no longer supported and tested. PowerPC 405/440 port is orphan from 2013 by commit cdeb89943bfc ("MAINTAINERS: Fix incorrect status tag") and commit 19624236cce1 ("MAINTAINERS: Update Grant's email address and maintainership") that's why it is time to remove the support fot these platforms. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/8c593895e2cb57d232d85ce4d8c3a1aa7f0869cc.1590079968.git.christophe.leroy@csgroup.eu
2020-05-26powerpc/8xx: Drop CONFIG_8xx_COPYBACK optionChristophe Leroy
CONFIG_8xx_COPYBACK was there to help disabling copyback cache mode for debuging hardware. But nobody will design new boards with 8xx now. All 8xx platforms select it, so make it the default and remove the option. Also remove the Mx_RESETVAL values which are pretty useless and hide the real value while reading code. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/bcc968cda075516eb76e2f25e09821f582c566b4.1589866984.git.christophe.leroy@csgroup.eu
2020-04-09Merge tag 'powerpc-5.7-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull more powerpc updates from Michael Ellerman: "The bulk of this is the series to make CONFIG_COMPAT user-selectable, it's been around for a long time but was blocked behind the syscall-in-C series. Plus there's also a few fixes and other minor things. Summary: - A fix for a crash in machine check handling on pseries (ie. guests) - A small series to make it possible to disable CONFIG_COMPAT, and turn it off by default for ppc64le where it's not used. - A few other miscellaneous fixes and small improvements. Thanks to: Alexey Kardashevskiy, Anju T Sudhakar, Arnd Bergmann, Christophe Leroy, Dan Carpenter, Ganesh Goudar, Geert Uytterhoeven, Geoff Levand, Mahesh Salgaonkar, Markus Elfring, Michal Suchanek, Nicholas Piggin, Stephen Boyd, Wen Xiong" * tag 'powerpc-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: selftests/powerpc: Always build the tm-poison test 64-bit powerpc: Improve ppc_save_regs() Revert "powerpc/64: irq_work avoid interrupt when called with hardware irqs enabled" powerpc/time: Replace <linux/clk-provider.h> by <linux/of_clk.h> powerpc/pseries/ddw: Extend upper limit for huge DMA window for persistent memory powerpc/perf: split callchain.c by bitness powerpc/64: Make COMPAT user-selectable disabled on littleendian by default. powerpc/64: make buildable without CONFIG_COMPAT powerpc/perf: consolidate valid_user_sp -> invalid_user_sp powerpc/perf: consolidate read_user_stack_32 powerpc: move common register copy functions from signal_32.c to signal.c powerpc: Add back __ARCH_WANT_SYS_LLSEEK macro powerpc/ps3: Set CONFIG_UEVENT_HELPER=y in ps3_defconfig powerpc/ps3: Remove an unneeded NULL check powerpc/ps3: Remove duplicate error message powerpc/powernv: Re-enable imc trace-mode in kernel powerpc/perf: Implement a global lock to avoid races between trace, core and thread imc events. powerpc/pseries: Fix MCE handling on pseries selftests/eeh: Skip ahci adapters powerpc/64s: Fix doorbell wakeup msgclr optimisation
2020-04-03powerpc/ps3: Set CONFIG_UEVENT_HELPER=y in ps3_defconfigGeoff Levand
Set CONFIG_UEVENT_HELPER=y in ps3_defconfig. commit 1be01d4a57142ded23bdb9e0c8d9369e693b26cc (driver: base: Disable CONFIG_UEVENT_HELPER by default) disabled the CONFIG_UEVENT_HELPER option that is needed for hotplug and module loading by most older 32bit powerpc distributions that users typically install on the PS3. Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/410cda9aa1a6e04434dfe1f9aa2103d0694f706c.1585340156.git.geoff@infradead.org
2020-02-24scsi: sr: remove references to BLK_DEV_SR_VENDOR, leave it enabledDiego Elio Pettenò
This kernel configuration is basically enabling/disabling sr driver quirks detection. While these quirks are for fairly rare devices (very old CD burners, and a glucometer), the additional detection of these models is a very minimal amount of code. The logic behind the quirks is always built into the sr driver. This also removes the config from all the defconfig files that are enabling this already. Link: https://lore.kernel.org/r/20200223191144.726-1-flameeyes@flameeyes.com Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-02-07Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds
Pull virtio updates from Michael Tsirkin: "Some bug fixes/cleanups. The deprecated scsi passthrough for virtio_blk is removed" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: virtio_balloon: Fix memory leaks on errors in virtballoon_probe() virtio-balloon: Fix memory leak when unloading while hinting is in progress virtio_balloon: prevent pfn array overflow virtio-blk: remove VIRTIO_BLK_F_SCSI support virtio-pci: check name when counting MSI-X vectors virtio-balloon: initialize all vq callbacks virtio-mmio: convert to devm_platform_ioremap_resource
2020-02-06virtio-blk: remove VIRTIO_BLK_F_SCSI supportChristoph Hellwig
Since the need for a special flag to support SCSI passthrough on a block device was added in May 2017 the SCSI passthrough support in virtio-blk has been disabled. It has always been a bad idea (just ask the original author..) and we have virtio-scsi for proper passthrough. The feature also never made it into the virtio 1.0 or later specifications. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-01-31powerpc: configs: Cleanup old Kconfig optionsKrzysztof Kozlowski
CONFIG_ENABLE_WARN_DEPRECATED is gone since commit 771c035372a0 ("deprecate the '__deprecated' attribute warnings entirely and for good"). CONFIG_IOSCHED_DEADLINE and CONFIG_IOSCHED_CFQ are gone since commit f382fb0bcef4 ("block: remove legacy IO schedulers"). The IOSCHED_DEADLINE was replaced by MQ_IOSCHED_DEADLINE and it will be now enabled by default (along with MQ_IOSCHED_KYBER). Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200130195223.3843-1-krzk@kernel.org
2020-01-31powerpc/configs/skiroot: Enable some more hardening optionsMichael Ellerman
Enable more hardening options. Note BUG_ON_DATA_CORRUPTION selects DEBUG_LIST and is essentially just a synonym for it. DEBUG_SG, DEBUG_NOTIFIERS, DEBUG_LIST, DEBUG_CREDENTIALS and SCHED_STACK_END_CHECK should all be low overhead and just add a few extra checks. SLAB_FREELIST_RANDOM, and SLUB_DEBUG_ON will add some overhead to the SLAB allocator, but nothing that should be meaningful for skiroot. Unselecting SLAB_MERGE_DEFAULT causes the SLAB to use more memory, but the skiroot kernel shouldn't be memory constrained on any of our systems, all it does is run a small bootloader. Disabling merging has some security/robustness benefit as it means a user-after-free or overflow will be limited to the objects in that slab, rather than potentially affecting objects from unrelated slabs that have been merged. Note also that slab merging is disabled anyway by enabling SLUB_DEBUG_ON, because of the SLAB_NEVER_MERGE mask. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200121043000.16212-9-mpe@ellerman.id.au
2020-01-31powerpc/configs/skiroot: Disable xmon default & enable reboot on panicMichael Ellerman
If the skiroot kernel crashes we don't want it sitting at an xmon prompt forever. Instead it's more helpful to reboot and bring the boot loader back up, and if the crash was transient we can then boot successfully. Similarly if we panic we should reboot, with a short timeout in case someone is watching the console. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200121043000.16212-8-mpe@ellerman.id.au
2020-01-31powerpc/configs/skiroot: Enable security featuresJoel Stanley
This turns on HARDENED_USERCOPY with HARDENED_USERCOPY_PAGESPAN, and FORTIFY_SOURCE. It also enables SECURITY_LOCKDOWN_LSM with _EARLY and LOCK_DOWN_KERNEL_FORCE_INTEGRITY options enabled. This still allows xmon to be used in read-only mode. MODULE_SIG is selected by lockdown, so it is still enabled. Because we're setting LOCK_DOWN_KERNELFORCE_INTEGRITY=y we also need to enable KEXEC_FILE=y so that kexec continues to work. Signed-off-by: Joel Stanley <joel@jms.id.au> [mpe: Switch to lockdown integrity mode per oohal, enable KEXEC_FILE as reported by jms] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200121043000.16212-7-mpe@ellerman.id.au
2020-01-31powerpc/configs/skiroot: Update for symbol movement onlyMichael Ellerman
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200121043000.16212-6-mpe@ellerman.id.au
2020-01-31powerpc/configs/skiroot: Drop default n CONFIG_CRYPTO_ECHAINIVMichael Ellerman
It's default n so we don't need to disable it. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200121043000.16212-5-mpe@ellerman.id.au
2020-01-31powerpc/configs/skiroot: Drop HID_LOGITECHMichael Ellerman
Commit bdd08fff4915 ("HID: logitech: Add depends on LEDS_CLASS to Logitech Kconfig entry") made HID_LOGITECH depend on LEDS_CLASS which we do not enable, meaning we are not actually enabling those drivers any more. The Kconfig help text suggests USB HID compliant Logictech devices will continue to work without HID_LOGITECH, so just drop it. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200121043000.16212-4-mpe@ellerman.id.au
2020-01-31powerpc/configs: Drop NET_VENDOR_HP which moved to stagingMichael Ellerman
The HP network driver moved to staging in commit 52340b82cf1a ("hp100: Move 100BaseVG AnyLAN driver to staging") meaning we don't need to disable it any more in our defconfigs. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200121043000.16212-3-mpe@ellerman.id.au
2020-01-31powerpc/configs: NET_CADENCE became NET_VENDOR_CADENCEMichael Ellerman
The NET_CADENCE symbol was renamed to NET_VENDOR_CADENCE, so we don't need to disable the former, see commit 0df5f81c481e ("net: ethernet: Add missing VENDOR to Cadence and Packet Engines symbols"). Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200121043000.16212-2-mpe@ellerman.id.au
2020-01-31powerpc/configs: Drop CONFIG_QLGE which moved to stagingMichael Ellerman
The QLGE driver moved to staging in commit 955315b0dc8c ("qlge: Move drivers/net/ethernet/qlogic/qlge/ to drivers/staging/qlge/"), meaning our defconfigs that enable it have no effect as we don't enable CONFIG_STAGING. It sounds like the device is obsolete, so drop the driver. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20200121043000.16212-1-mpe@ellerman.id.au
2019-12-01Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace Pull sysctl system call removal from Eric Biederman: "As far as I can tell we have reached the point where no one enables the sysctl system call anymore. It still is enabled in a few defconfigs but they are mostly the rarely used one and in asking people about that it was more cut & paste enabled than anything else. This is single commit that just deletes code. Leaving just enough code so that the deprecated sysctl warning continues to be printed. If my analysis turns out to be wrong and someone actually cares it will be easy to revert this commit and have the system call again. There was one new xtensa defconfig in linux-next that enabled the system call this cycle and when asked about it the maintainer of the code replied that it was not enabled on purpose. As of today's linux-next tree that defconfig no longer enables the system call. What we saw in the review discussion was that if we go a step farther than my patch and mess with uapi headers there are pieces of code that won't compile, but nothing minds the system call actually disappearing from the kernel" Link: https://lore.kernel.org/lkml/201910011140.EA0181F13@keescook/ * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: sysctl: Remove the sysctl system call
2019-11-26sysctl: Remove the sysctl system callEric W. Biederman
This system call has been deprecated almost since it was introduced, and in a survey of the linux distributions I can no longer find any of them that enable CONFIG_SYSCTL_SYSCALL. The only indication that I can find that anyone might care is that a few of the defconfigs in the kernel enable CONFIG_SYSCTL_SYSCALL. However this appears in only 31 of 414 defconfigs in the kernel, so I suspect this symbols presence is simply because it is harmless to include rather than because it is necessary. As there appear to be no users of the sysctl system call, remove the code. As this removes one of the few uses of the internal kernel mount of proc I hope this allows for even more simplifications of the proc filesystem. Cc: Alex Smith <alex.smith@imgtec.com> Cc: Anders Berg <anders.berg@lsi.com> Cc: Apelete Seketeli <apelete@seketeli.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Chee Nouk Phoon <cnphoon@altera.com> Cc: Chris Zankel <chris@zankel.net> Cc: Christian Ruppert <christian.ruppert@abilis.com> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Harvey Hunt <harvey.hunt@imgtec.com> Cc: Helge Deller <deller@gmx.de> Cc: Hongliang Tao <taohl@lemote.com> Cc: Hua Yan <yanh@lemote.com> Cc: Huacai Chen <chenhc@lemote.com> Cc: John Crispin <blogic@openwrt.org> Cc: Jonas Jensen <jonas.jensen@gmail.com> Cc: Josh Boyer <jwboyer@gmail.com> Cc: Jun Nie <jun.nie@linaro.org> Cc: Kevin Hilman <khilman@linaro.org> Cc: Kevin Wells <kevin.wells@nxp.com> Cc: Kumar Gala <galak@codeaurora.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Ley Foon Tan <lftan@altera.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Noam Camus <noamc@ezchip.com> Cc: Olof Johansson <olof@lixom.net> Cc: Paul Burton <paul.burton@mips.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Phil Edworthy <phil.edworthy@renesas.com> Cc: Pierrick Hascoet <pierrick.hascoet@abilis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Roland Stigge <stigge@antcom.de> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Scott Telford <stelford@cadence.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Tanmay Inamdar <tinamdar@apm.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Andi Kleen <ak@linux.intel.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2019-11-21powerpc/sysdev: drop simple gpioChristophe Leroy
There is a config item CONFIG_SIMPLE_GPIO which provides simple memory mapped GPIOs specific to powerpc. However, the only platform which selects this option is mpc5200, and this platform doesn't use it. There are three boards calling simple_gpiochip_init(), but as they don't select CONFIG_SIMPLE_GPIO, this is just a nop. Simple_gpio is just redundant with the generic MMIO GPIO driver which can be found in driver/gpio/ and selected via CONFIG_GPIO_GENERIC_PLATFORM, so drop simple_gpio driver. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/bf930402613b41b42d0441b784e0cc43fc18d1fb.1572529632.git.christophe.leroy@c-s.fr
2019-11-13powerpc/configs: remove obsolete CONFIG_INET_XFRM_MODE_* and ↵YueHaibing
CONFIG_INET6_XFRM_MODE_* These Kconfig options has been removed in commit 4c145dce2601 ("xfrm: make xfrm modes builtin") So there is no point to keep it in defconfigs any longer. Signed-off-by: YueHaibing <yuehaibing@huawei.com> [mpe: Extract from cross arch patch] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190612071901.21736-1-yuehaibing@huawei.com
2019-10-28powerpc/configs: Rename foo_basic_defconfig to foo_base.configMichael Ellerman
We have several "defconfigs" that are not actually full defconfigs they are just a base set of options which are then merged with other fragments to produce a working defconfig. The most obvious example is corenet_basic_defconfig which only contains one symbol CONFIG_CORENET_GENERIC=y. And in fact if you build it as a "defconfig" that one symbol ends up undefined, because its prerequisites are missing. There is also mpc85xx_base_defconfig which doesn't actually enable CONFIG_PPC_85xx. To avoid confusion, rename these config fragments to "foo_base.config" to make it clearer that they are not full defconfigs and are instaed just fragments that are used to generate real defconfigs. Reported-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190528081614.26096-1-mpe@ellerman.id.au
2019-10-28powerpc/configs: Add debug config fragmentAndrew Donnellan
Add a debug config fragment that we can use to put useful debug options into. It can be used like: # make foo_defconfig # make debug.config Currently the only option included is to enable debugfs SCOM access. Suggested-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> [mpe: Drop the special targets, just use the fragment directly] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190801045855.5822-1-ajd@linux.ibm.com
2019-10-11powerpc/configs: add FADump awareness to skiroot_defconfigHari Bathini
FADump is supported on PowerNV platform. To fulfill this support, the petitboot kernel must be FADump aware. Enable config PRESERVE_FA_DUMP to make the petitboot kernel FADump aware. Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/157062986936.23016.10146169203560084401.stgit@hbathini.in.ibm.com
2019-08-30powerpc/configs: Enable secure guest support in pseries and ppc64 defconfigsRyan Grimm
Enables running as a secure guest in platforms with an Ultravisor. Signed-off-by: Ryan Grimm <grimm@linux.vnet.ibm.com> Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190820021326.6884-17-bauerman@linux.ibm.com
2019-08-28powerpc/32s: get rid of CPU_FTR_601 featureChristophe Leroy
Now that 601 is exclusive from other 6xx, CPU_FTR_601 and associated fixups are useless. Drop this feature and use #ifdefs instead. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/ecdb7194a17dbfa01865df6a82979533adc2c70b.1566834712.git.christophe.leroy@c-s.fr
2019-08-27powerpc: remove the ppc44x ocm.c fileChristoph Hellwig
The on chip memory allocator is entirely unused in the kernel tree. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/7b1668941ad1041d08b19167030868de5840b153.1566309262.git.christophe.leroy@c-s.fr
2019-08-22powerpc/configs: Disable /dev/port in skiroot defconfigDaniel Axtens
While reviewing lockdown patches, I discovered that we still enable /dev/port (CONFIG_DEVPORT) in skiroot. /dev/port is used for old x86 style IO accesses. It's set up in drivers/char/mem.c, and is only created if arch_has_dev_port() returns true. Per arch/powerpc/include/asm/io.h, on PPC64 with PCI, this is only true if there's a legacy ISA bridge. Even if a system has a legacy ISA bridge installed, we have no business accessing it in skiroot. Deselect CONFIG_DEVPORT for skiroot. Signed-off-by: Daniel Axtens <dja@axtens.net> [mpe: Incorporate emailed comments into the change log] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190627053008.29315-1-dja@axtens.net
2019-08-05powerpc/configs: Disable SCOM_DEBUGFS in powernv_defconfigAndrew Donnellan
SCOM_DEBUGFS is really not needed for anything other than low-level hardware debugging. mpe: It also introduces a large and poorly documented/understood attack surface. Although the interface is only available to root, the kernel still aspires to restrict root to accessing hardware through well defined interfaces, which this is not. opal-prd uses its own interface (/dev/prd) for SCOM access, so it doesn't need SCOM_DEBUGFS. At some point in the future we'll introduce a debug config fragment where this can go instead. Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190509051119.7694-5-ajd@linux.ibm.com
2019-07-13Merge tag 'powerpc-5.3-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Notable changes: - Removal of the NPU DMA code, used by the out-of-tree Nvidia driver, as well as some other functions only used by drivers that haven't (yet?) made it upstream. - A fix for a bug in our handling of hardware watchpoints (eg. perf record -e mem: ...) which could lead to register corruption and kernel crashes. - Enable HAVE_ARCH_HUGE_VMAP, which allows us to use large pages for vmalloc when using the Radix MMU. - A large but incremental rewrite of our exception handling code to use gas macros rather than multiple levels of nested CPP macros. And the usual small fixes, cleanups and improvements. Thanks to: Alastair D'Silva, Alexey Kardashevskiy, Andreas Schwab, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Cédric Le Goater, Christian Lamparter, Christophe Leroy, Christophe Lombard, Christoph Hellwig, Daniel Axtens, Denis Efremov, Enrico Weigelt, Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Geliang Tang, Gen Zhang, Greg Kroah-Hartman, Greg Kurz, Gustavo Romero, Krzysztof Kozlowski, Madhavan Srinivasan, Masahiro Yamada, Mathieu Malaterre, Michael Neuling, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nishad Kamdar, Oliver O'Halloran, Qian Cai, Ravi Bangoria, Sachin Sant, Sam Bobroff, Satheesh Rajendran, Segher Boessenkool, Shaokun Zhang, Shawn Anastasio, Stewart Smith, Suraj Jitindar Singh, Thiago Jung Bauermann, YueHaibing" * tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (163 commits) powerpc/powernv/idle: Fix restore of SPRN_LDBAR for POWER9 stop state. powerpc/eeh: Handle hugepages in ioremap space ocxl: Update for AFU descriptor template version 1.1 powerpc/boot: pass CONFIG options in a simpler and more robust way powerpc/boot: add {get, put}_unaligned_be32 to xz_config.h powerpc/irq: Don't WARN continuously in arch_local_irq_restore() powerpc/module64: Use symbolic instructions names. powerpc/module32: Use symbolic instructions names. powerpc: Move PPC_HA() PPC_HI() and PPC_LO() to ppc-opcode.h powerpc/module64: Fix comment in R_PPC64_ENTRY handling powerpc/boot: Add lzo support for uImage powerpc/boot: Add lzma support for uImage powerpc/boot: don't force gzipped uImage powerpc/8xx: Add microcode patch to move SMC parameter RAM. powerpc/8xx: Use IO accessors in microcode programming. powerpc/8xx: replace #ifdefs by IS_ENABLED() in microcode.c powerpc/8xx: refactor programming of microcode CPM params. powerpc/8xx: refactor printing of microcode patch name. powerpc/8xx: Refactor microcode write powerpc/8xx: refactor writing of CPM microcode arrays ...
2019-07-12Merge tag 'kbuild-v5.3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - remove headers_{install,check}_all targets - remove unreasonable 'depends on !UML' from CONFIG_SAMPLES - re-implement 'make headers_install' more cleanly - add new header-test-y syntax to compile-test headers - compile-test exported headers to ensure they are compilable in user-space - compile-test headers under include/ to ensure they are self-contained - remove -Waggregate-return, -Wno-uninitialized, -Wno-unused-value flags - add -Werror=unknown-warning-option for Clang - add 128-bit built-in types support to genksyms - fix missed rebuild of modules.builtin - propagate 'No space left on device' error in fixdep to Make - allow Clang to use its integrated assembler - improve some coccinelle scripts - add a new flag KBUILD_ABS_SRCTREE to request Kbuild to use absolute path for $(srctree). - do not ignore errors when compression utility is missing - misc cleanups * tag 'kbuild-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (49 commits) kbuild: use -- separater intead of $(filter-out ...) for cc-cross-prefix kbuild: Inform user to pass ARCH= for make mrproper kbuild: fix compression errors getting ignored kbuild: add a flag to force absolute path for srctree kbuild: replace KBUILD_SRCTREE with boolean building_out_of_srctree kbuild: remove src and obj from the top Makefile scripts/tags.sh: remove unused environment variables from comments scripts/tags.sh: drop SUBARCH support for ARM kbuild: compile-test kernel headers to ensure they are self-contained kheaders: include only headers into kheaders_data.tar.xz kheaders: remove meaningless -R option of 'ls' kbuild: support header-test-pattern-y kbuild: do not create wrappers for header-test-y kbuild: compile-test exported headers to ensure they are self-contained init/Kconfig: add CONFIG_CC_CAN_LINK kallsyms: exclude kasan local symbols on s390 kbuild: add more hints about SUBDIRS replacement coccinelle: api/stream_open: treat all wait_.*() calls as blocking coccinelle: put_device: Add a cast to an expression for an assignment coccinelle: put_device: Adjust a message construction ...
2019-07-04powerpc: Enable CONFIG_IPV6 in ppc64_defconfigSatheesh Rajendran
Enable CONFIG_IPV6 in ppc64_defconfig to enable certain network functionalities required for tests. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-04powerpc/configs: Disable latencytopAnton Blanchard
latencytop adds almost 4kB to each and every task struct and as such it doesn't deserve to be in our defconfigs. Signed-off-by: Anton Blanchard <anton@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-03powerpc/configs: Remove useless UEVENT_HELPER_PATHKrzysztof Kozlowski
Remove the CONFIG_UEVENT_HELPER_PATH because: 1. It is disabled since commit 1be01d4a5714 ("driver: base: Disable CONFIG_UEVENT_HELPER by default") as its dependency (UEVENT_HELPER) was made default to 'n', 2. It is not recommended (help message: "This should not be used today [...] creates a high system load") and was kept only for ancient userland, 3. Certain userland specifically requests it to be disabled (systemd README: "Legacy hotplug slows down the system and confuses udev"). Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-06-15net: sched: remove NET_CLS_IND config optionJiri Pirko
This config option makes only couple of lines optional. Two small helpers and an int in couple of cls structs. Remove the config option and always compile this in. This saves the user from unexpected surprises when he adds a filter with ingress device match which is silently ignored in case the config option is not set. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-15kbuild: add CONFIG_HEADERS_INSTALL and loosen the dependency of samplesMasahiro Yamada
Commit 5318321d367c ("samples: disable CONFIG_SAMPLES for UML") used a big hammer to fix the build errors under the samples/ directory. Only some samples actually include uapi headers from usr/include. Introduce CONFIG_HEADERS_INSTALL since 'depends on HEADERS_INSTALL' is clearer than 'depends on !UML'. If this option is enabled, uapi headers are installed before starting directory descending. I added 'depends on HEADERS_INSTALL' to per-sample CONFIG options. This allows UML to compile some samples. $ make ARCH=um allmodconfig samples/ [ snip ] CC [M] samples/configfs/configfs_sample.o CC [M] samples/kfifo/bytestream-example.o CC [M] samples/kfifo/dma-example.o CC [M] samples/kfifo/inttype-example.o CC [M] samples/kfifo/record-example.o CC [M] samples/kobject/kobject-example.o CC [M] samples/kobject/kset-example.o CC [M] samples/trace_events/trace-events-sample.o CC [M] samples/trace_printk/trace-printk.o AR samples/vfio-mdev/built-in.a AR samples/built-in.a Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-05-12Merge tag 'mtd/for-5.2' of ↵Linus Torvalds
ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mtd/linux Pull MTD updates from Richard Weinberger: "MTD core changes: - New AFS partition parser - Update MAINTAINERS entry - Use of fall-throughs markers NAND core changes: - Support having the bad block markers in either the first, second or last page of a block. The combination of all three location is now possible. - Constification of NAND_OP_PARSER(_PATTERN) elements. - Generic NAND DT bindings changed to yaml format (can be used to check the proposed bindings. First platform to be fully supported: sunxi. - Stopped using several legacy hooks. - Preparation to use the generic NAND layer with the addition of several helpers and the removal of the struct nand_chip from generic functions. - Kconfig cleanup to prepare the introduction of external ECC engines support. - Fallthrough comments. - Introduction of the SPI-mem dirmap API for SPI-NAND devices. Raw NAND controller drivers changes: - nandsim: - Switch to ->exec-op(). - meson: - Misc cleanups and fixes. - New OOB layout. - Sunxi: - A23/A33 NAND DMA support. - Ingenic: - Full reorganization and cleanup. - Clear separation between NAND controller and ECC engine. - Support JZ4740 an JZ4725B. - Denali: - Clear controller/chip separation. - ->exec_op() migration. - Various cleanups. - fsl_elbc: - Enable software ECC support. - Atmel: - Sam9x60 support. - GPMI: - Introduce the GPMI_IS_MXS() macro. - Various trivial/spelling/coding style fixes. SPI NOR core changes: - Print all JEDEC ID bytes on error - Fix comment of spi_nor_find_best_erase_type() - Add region locking flags for s25fl512s SPI NOR controller drivers changes: - intel-spi: - Avoid crossing 4K address boundary on read/write - Add support for Intel Comet Lake SPI serial flash" * tag 'mtd/for-5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (120 commits) mtd: part: fix incorrect format specifier for an unsigned long long mtd: lpddr_cmds: Mark expected switch fall-through mtd: phram: Mark expected switch fall-throughs mtd: cfi_cmdset_0002: Mark expected switch fall-throughs mtd: cfi_util: mark expected switch fall-throughs MAINTAINERS: MTD Git repository is hosted on kernel.org MAINTAINERS: Update jffs2 entry mtd: afs: add v2 partition parsing mtd: afs: factor the IIS read into partition parser mtd: afs: factor footer parsing into the v1 part parsing mtd: factor out v1 partition parsing mtd: afs: simplify partition detection mtd: afs: simplify partition parsing mtd: partitions: Add OF support to AFS partitions mtd: partitions: Add AFS partitions DT bindings mtd: afs: Move AFS partition parser to parsers subdir mtd: maps: Make uclinux_ram_map static mtd: maps: Allow MTD_PHYSMAP with MTD_RAM MAINTAINERS: Add myself as MTD maintainer MAINTAINERS: Remove my name from the MTD and NAND entries ...
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