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2022-12-14Merge tag 'mm-stable-2022-12-13' of ↵Linus Torvalds1-3/+0
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - More userfaultfs work from Peter Xu - Several convert-to-folios series from Sidhartha Kumar and Huang Ying - Some filemap cleanups from Vishal Moola - David Hildenbrand added the ability to selftest anon memory COW handling - Some cpuset simplifications from Liu Shixin - Addition of vmalloc tracing support by Uladzislau Rezki - Some pagecache folioifications and simplifications from Matthew Wilcox - A pagemap cleanup from Kefeng Wang: we have VM_ACCESS_FLAGS, so use it - Miguel Ojeda contributed some cleanups for our use of the __no_sanitize_thread__ gcc keyword. This series should have been in the non-MM tree, my bad - Naoya Horiguchi improved the interaction between memory poisoning and memory section removal for huge pages - DAMON cleanups and tuneups from SeongJae Park - Tony Luck fixed the handling of COW faults against poisoned pages - Peter Xu utilized the PTE marker code for handling swapin errors - Hugh Dickins reworked compound page mapcount handling, simplifying it and making it more efficient - Removal of the autonuma savedwrite infrastructure from Nadav Amit and David Hildenbrand - zram support for multiple compression streams from Sergey Senozhatsky - David Hildenbrand reworked the GUP code's R/O long-term pinning so that drivers no longer need to use the FOLL_FORCE workaround which didn't work very well anyway - Mel Gorman altered the page allocator so that local IRQs can remnain enabled during per-cpu page allocations - Vishal Moola removed the try_to_release_page() wrapper - Stefan Roesch added some per-BDI sysfs tunables which are used to prevent network block devices from dirtying excessive amounts of pagecache - David Hildenbrand did some cleanup and repair work on KSM COW breaking - Nhat Pham and Johannes Weiner have implemented writeback in zswap's zsmalloc backend - Brian Foster has fixed a longstanding corner-case oddity in file[map]_write_and_wait_range() - sparse-vmemmap changes for MIPS, LoongArch and NIOS2 from Feiyang Chen - Shiyang Ruan has done some work on fsdax, to make its reflink mode work better under xfstests. Better, but still not perfect - Christoph Hellwig has removed the .writepage() method from several filesystems. They only need .writepages() - Yosry Ahmed wrote a series which fixes the memcg reclaim target beancounting - David Hildenbrand has fixed some of our MM selftests for 32-bit machines - Many singleton patches, as usual * tag 'mm-stable-2022-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (313 commits) mm/hugetlb: set head flag before setting compound_order in __prep_compound_gigantic_folio mm: mmu_gather: allow more than one batch of delayed rmaps mm: fix typo in struct pglist_data code comment kmsan: fix memcpy tests mm: add cond_resched() in swapin_walk_pmd_entry() mm: do not show fs mm pc for VM_LOCKONFAULT pages selftests/vm: ksm_functional_tests: fixes for 32bit selftests/vm: cow: fix compile warning on 32bit selftests/vm: madv_populate: fix missing MADV_POPULATE_(READ|WRITE) definitions mm/gup_test: fix PIN_LONGTERM_TEST_READ with highmem mm,thp,rmap: fix races between updates of subpages_mapcount mm: memcg: fix swapcached stat accounting mm: add nodes= arg to memory.reclaim mm: disable top-tier fallback to reclaim on proactive reclaim selftests: cgroup: make sure reclaim target memcg is unprotected selftests: cgroup: refactor proactive reclaim code to reclaim_until() mm: memcg: fix stale protection of reclaim target memcg mm/mmap: properly unaccount memory on mas_preallocate() failure omfs: remove ->writepage jfs: remove ->writepage ...
2022-12-13Merge tag 'pull-elfcore' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull elf coredumping updates from Al Viro: "Unification of regset and non-regset sides of ELF coredump handling. Collecting per-thread register values is the only thing that needs to be ifdefed there..." * tag 'pull-elfcore' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: [elf] get rid of get_note_info_size() [elf] unify regset and non-regset cases [elf][non-regset] use elf_core_copy_task_regs() for dumper as well [elf][non-regset] uninline elf_core_copy_task_fpregs() (and lose pt_regs argument) elf_core_copy_task_regs(): task_pt_regs is defined everywhere [elf][regset] simplify thread list handling in fill_note_info() [elf][regset] clean fill_note_info() a bit kill extern of vsyscall32_sysctl kill coredump_params->regs kill signal_pt_regs()
2022-12-12Merge tag 'microblaze-v6.2' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds9-1527/+37
Pull microblaze updates from Michal Simek: "Clean up PCI support which was pretty much copied and pasted from PowerPC long time ago for one custom platform which is not available for years. Also, the Xilinx/AMD PCIe team tested Microblaze with IP cores also used on ARM SOCs and clean up Microblaze code" * tag 'microblaze-v6.2' of git://git.monstr.eu/linux-2.6-microblaze: microblaze/PCI: Moving PCI iounmap and dependent code microblaze/PCI: Remove support for Xilinx PCI host bridge microblaze/PCI: Remove unused pci_iobar_pfn() and et al declarations microblaze/PCI: Remove unused sys_pciconfig_iobase() and et al declaration microblaze/PCI: Remove unused pci_address_to_pio() conversion of CPU address to I/O port microblaze/PCI: Remove unused PCI Indirect ops microblaze/PCI: Remove unused PCI BIOS resource allocation microblaze/PCI: Remove unused allocation & free of PCI host bridge structure microblaze/PCI: Remove unused device tree parsing for a host bridge resources microblaze/PCI: Remove unused PCI legacy IO's access on a bus microblaze/PCI: Remove unused PCI bus scan if configured as a host microblaze/PCI: Remove Null PCI config access unused functions microblaze/PCI: Remove unused early_read_config_byte() et al declarations
2022-11-25microblaze/PCI: Moving PCI iounmap and dependent codeThippeswamy Havalige3-73/+37
Moving PCI iounmap function and et all dependent code to iomap.c. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-14-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove support for Xilinx PCI host bridgeThippeswamy Havalige6-126/+0
This patch removes support for the Xilinx PCI host bridge IPcore. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-13-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused pci_iobar_pfn() and et al declarationsThippeswamy Havalige3-24/+0
Remove unused pci_iobar_pfn() and et al declarations. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-12-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused sys_pciconfig_iobase() and et al declarationThippeswamy Havalige3-59/+0
Removed unused code which provides information of various I/O regions. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-11-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused pci_address_to_pio() conversion of CPU address ↵Thippeswamy Havalige1-23/+0
to I/O port Remove unused pci_address_to_pio() conversion of CPU address to I/O port function. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-10-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused PCI Indirect opsThippeswamy Havalige4-199/+1
Remove unused variants of PCI indirect handling. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-9-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused PCI BIOS resource allocationThippeswamy Havalige3-495/+0
Remove PCI BIOSn unused code which provide's resource allocation for all pci bus and pci host controller memory initialization. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-8-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused allocation & free of PCI host bridge structureThippeswamy Havalige3-40/+0
Remove unused allocation and freeing of PCI host bridge structure. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-7-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused device tree parsing for a host bridge resourcesThippeswamy Havalige3-181/+0
Remove unused pci_process_bridge_OF_ranges function, used to parse the "ranges" property of a PCI host device. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-6-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused PCI legacy IO's access on a busThippeswamy Havalige2-150/+0
Remove PCI legacy read,write and mmap access IO's on a bus Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-5-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused PCI bus scan if configured as a hostThippeswamy Havalige2-23/+0
This routine is meant to be used early during boot, when the PCI bus numbers have not yet been assigned, and you need to issue PCI config cycles to an OF device. It could also be used to "fix" RTAS config cycles if you want to set pci_assign_all_buses to 1 and still use RTAS for PCI config cycles. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-4-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove Null PCI config access unused functionsThippeswamy Havalige1-64/+0
Remove unused NULL_PCI_OP config access functions, for the case when we can't find a hose. Remove unused EARLY_PCI_OP and other declarations. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-3-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25microblaze/PCI: Remove unused early_read_config_byte() et al declarationsThippeswamy Havalige3-71/+0
early_read_config_byte() and similar are declared but never defined. Remove the unused declarations. Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com> Link: https://lore.kernel.org/r/20221025065214.4663-2-thippeswamy.havalige@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-25[elf][non-regset] uninline elf_core_copy_task_fpregs() (and lose pt_regs ↵Al Viro1-1/+1
argument) Don't bother with pointless macros - we are not sharing it with aout coredumps anymore. Just convert the underlying functions to the same arguments (nobody uses regs, actually) and call them elf_core_copy_task_fpregs(). And unexport the entire bunch, while we are at it. [added missing includes in arch/{csky,m68k,um}/kernel/process.c to avoid extra warnings about the lack of externs getting added to huge piles for those files. Pointless, but...] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2022-11-24kbuild: fix "cat: .version: No such file or directory"Masahiro Yamada1-2/+2
Since commit 2df8220cc511 ("kbuild: build init/built-in.a just once"), the .version file is not touched at all when KBUILD_BUILD_VERSION is given. If KBUILD_BUILD_VERSION is specified and the .version file is missing (for example right after 'make mrproper'), "No such file or director" is shown. Even if the .version exists, it is irrelevant to the version of the current build. $ make -j$(nproc) KBUILD_BUILD_VERSION=100 mrproper defconfig all [ snip ] BUILD arch/x86/boot/bzImage cat: .version: No such file or directory Kernel: arch/x86/boot/bzImage is ready (#) Show KBUILD_BUILD_VERSION if it is given. Fixes: 2df8220cc511 ("kbuild: build init/built-in.a just once") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-11-09mm: remove kern_addr_valid() completelyKefeng Wang1-3/+0
Most architectures (except arm64/x86/sparc) simply return 1 for kern_addr_valid(), which is only used in read_kcore(), and it calls copy_from_kernel_nofault() which could check whether the address is a valid kernel address. So as there is no need for kern_addr_valid(), let's remove it. Link: https://lkml.kernel.org/r/20221018074014.185687-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Acked-by: Heiko Carstens <hca@linux.ibm.com> [s390] Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Helge Deller <deller@gmx.de> [parisc] Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Acked-by: Guo Ren <guoren@kernel.org> [csky] Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64] Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: <aou@eecs.berkeley.edu> Cc: Borislav Petkov <bp@alien8.de> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Chris Zankel <chris@zankel.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Jonas Bonn <jonas@southpole.se> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@rivosinc.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Xuerui Wang <kernel@xen0n.name> Cc: Yoshinori Sato <ysato@users.osdn.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-10-12Merge tag 'mm-nonmm-stable-2022-10-11' of ↵Linus Torvalds2-6/+1
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - hfs and hfsplus kmap API modernization (Fabio Francesco) - make crash-kexec work properly when invoked from an NMI-time panic (Valentin Schneider) - ntfs bugfixes (Hawkins Jiawei) - improve IPC msg scalability by replacing atomic_t's with percpu counters (Jiebin Sun) - nilfs2 cleanups (Minghao Chi) - lots of other single patches all over the tree! * tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits) include/linux/entry-common.h: remove has_signal comment of arch_do_signal_or_restart() prototype proc: test how it holds up with mapping'less process mailmap: update Frank Rowand email address ia64: mca: use strscpy() is more robust and safer init/Kconfig: fix unmet direct dependencies ia64: update config files nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure fork: remove duplicate included header files init/main.c: remove unnecessary (void*) conversions proc: mark more files as permanent nilfs2: remove the unneeded result variable nilfs2: delete unnecessary checks before brelse() checkpatch: warn for non-standard fixes tag style usr/gen_init_cpio.c: remove unnecessary -1 values from int file ipc/msg: mitigate the lock contention with percpu counter percpu: add percpu_counter_add_local and percpu_counter_sub_local fs/ocfs2: fix repeated words in comments relay: use kvcalloc to alloc page array in relay_alloc_page_array proc: make config PROC_CHILDREN depend on PROC_FS fs: uninline inode_maybe_inc_iversion() ...
2022-10-10Merge tag 'kbuild-v6.1' of ↵Linus Torvalds2-3/+2
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Remove potentially incomplete targets when Kbuid is interrupted by SIGINT etc in case GNU Make may miss to do that when stderr is piped to another program. - Rewrite the single target build so it works more correctly. - Fix rpm-pkg builds with V=1. - List top-level subdirectories in ./Kbuild. - Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in kallsyms. - Avoid two different modules in lib/zstd/ having shared code, which potentially causes building the common code as build-in and modular back-and-forth. - Unify two modpost invocations to optimize the build process. - Remove head-y syntax in favor of linker scripts for placing particular sections in the head of vmlinux. - Bump the minimal GNU Make version to 3.82. - Clean up misc Makefiles and scripts. * tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits) docs: bump minimal GNU Make version to 3.82 ia64: simplify esi object addition in Makefile Revert "kbuild: Check if linker supports the -X option" kbuild: rebuild .vmlinux.export.o when its prerequisite is updated kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_o zstd: Fixing mixed module-builtin objects kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols kallsyms: take the input file instead of reading stdin kallsyms: drop duplicated ignore patterns from kallsyms.c kbuild: reuse mksysmap output for kallsyms mksysmap: update comment about __crc_* kbuild: remove head-y syntax kbuild: use obj-y instead extra-y for objects placed at the head kbuild: hide error checker logs for V=1 builds kbuild: re-run modpost when it is updated kbuild: unify two modpost invocations kbuild: move vmlinux.o rule to the top Makefile kbuild: move .vmlinux.objs rule to Makefile.modpost kbuild: list sub-directories in ./Kbuild Makefile.compiler: replace cc-ifversion with compiler-specific macros ...
2022-10-02kbuild: remove head-y syntaxMasahiro Yamada1-1/+0
Kbuild puts the objects listed in head-y at the head of vmlinux. Conventionally, we do this for head*.S, which contains the kernel entry point. A counter approach is to control the section order by the linker script. Actually, the code marked as __HEAD goes into the ".head.text" section, which is placed before the normal ".text" section. I do not know if both of them are needed. From the build system perspective, head-y is not mandatory. If you can achieve the proper code placement by the linker script only, it would be cleaner. I collected the current head-y objects into head-object-list.txt. It is a whitelist. My hope is it will be reduced in the long run. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-10-02kbuild: use obj-y instead extra-y for objects placed at the headMasahiro Yamada1-2/+2
The objects placed at the head of vmlinux need special treatments: - arch/$(SRCARCH)/Makefile adds them to head-y in order to place them before other archives in the linker command line. - arch/$(SRCARCH)/kernel/Makefile adds them to extra-y instead of obj-y to avoid them going into built-in.a. This commit gets rid of the latter. Create vmlinux.a to collect all the objects that are unconditionally linked to vmlinux. The objects listed in head-y are moved to the head of vmlinux.a by using 'ar m'. With this, arch/$(SRCARCH)/kernel/Makefile can consistently use obj-y for builtin objects. There is no *.o that is directly linked to vmlinux. Drop unneeded code in scripts/clang-tools/gen_compile_commands.py. $(AR) mPi needs 'T' to workaround the llvm-ar bug. The fix was suggested by Nathan Chancellor [1]. [1]: https://lore.kernel.org/llvm/YyjjT5gQ2hGMH0ni@dev-arch.thelio-3990X/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-09-26microblaze: Add support for error injectionAppana Durga Kedareswara rao2-0/+60
To inject the error using the tmr inject IP reset vectors need to be placed in lmb(bram) due to the limitation in HW when this code runs out of DDR. Below code adds the error inject code to the .init.ivt section to copy it in machine_early_init to lmb/Bram location. C_BASE_VECTORS which allow moving reset vectors out of 0 location is not currently supported by Microblaze architecture, that's why all the time reset vectors with injection code is all the time copied to address 0. As of now getting this functionality working CPU switches to real mode and simply jumps to bram, which causes triggering of fault which continues to call_xmb_manager_break break handler which will at the end calls the error count callback function and performs recovery. Signed-off-by: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com> Link: https://lore.kernel.org/r/20220627064024.771037-4-appana.durga.rao@xilinx.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-09-26microblaze: Add custom break vector handler for mb managerAppana Durga Kedareswara rao2-1/+212
When the TMR Manager detects a fault Lockstep state it is signaled to the MicroBlaze processors by asserting a break signal, When Microblaze gets a break vector from tmr Microblaze it's needed to clear/block the break bit in the tmr manager before performing recovery. In order to perform recovery need to perform the following steps. 1) Store all internal MicroBlaze registers in RAM 2) Execute a suspend instruction which asserts the reset signal 3) Restore all registers from RAM and execute an RTBD instruction to return from the reset handler, to resume execution at the place where the break occurred. This API supports getting called from kernel space only. Signed-off-by: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com> Link: https://lore.kernel.org/r/20220627064024.771037-3-appana.durga.rao@xilinx.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-09-26microblaze: Add xmb_manager_register functionAppana Durga Kedareswara rao3-0/+75
Triple Modular Redundancy (TMR) Microblaze solution provides soft error injection, detection, correction and recovery for Microblaze cores in the system. The Xilinx/AMD Triple Modular Redundancy (TMR) solution in Vivado provides all the necessary building blocks to implement a redundant triplicated MicroBlaze subsystem. This processing subsystem is fault-tolerant and continues to operate nominally after encountering an error. Together with the capability to detect and recover from errors, the implementation ensures the reliability of the entire subsystem. When the break vector gets asserted because of error injection, the break signal must be blocked before exiting from the break handler, This commit adds support for xmb_manager_register api which updates the TMR manager address and control register and error count and reset callback function arguments, which will be used by the break handler to block the break and call the error count callback function and reset callback function. Signed-off-by: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com> Link: https://lore.kernel.org/r/20220627064024.771037-2-appana.durga.rao@xilinx.com Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-09-12kernel: exit: cleanup release_thread()Kefeng Wang1-5/+0
Only x86 has own release_thread(), introduce a new weak release_thread() function to clean empty definitions in other ARCHs. Link: https://lkml.kernel.org/r/20220819014406.32266-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Acked-by: Guo Ren <guoren@kernel.org> [csky] Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Brian Cain <bcain@quicinc.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Acked-by: Stafford Horne <shorne@gmail.com> [openrisc] Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64] Acked-by: Huacai Chen <chenhuacai@kernel.org> [LoongArch] Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Chris Zankel <chris@zankel.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Guo Ren <guoren@kernel.org> [csky] Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Jonas Bonn <jonas@southpole.se> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Xuerui Wang <kernel@xen0n.name> Cc: Yoshinori Sato <ysato@users.osdn.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-12treewide: defconfig: address renamed CONFIG_DEBUG_INFO=yArnd Bergmann1-1/+1
CONFIG_DEBUG_INFO is now implicitly selected if one picks one of the explicit options that could be DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT, DEBUG_INFO_DWARF4, DEBUG_INFO_DWARF5. This was actually not what I had in mind when I suggested making it a 'choice' statement, but it's too late to change again now, and the Kconfig logic is more sensible in the new form. Change any defconfig file that had CONFIG_DEBUG_INFO enabled but did not pick DWARF4 or DWARF5 explicitly to now pick the toolchain default. Link: https://lkml.kernel.org/r/20220811114609.2097335-1-arnd@kernel.org Fixes: f9b3cd245784 ("Kconfig.debug: make DEBUG_INFO selectable from a choice") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Yoshinori Sato <ysato@users.osdn.me> Cc: Rich Felker <dalias@libc.org> Cc: Richard Weinberger <richard@nod.at> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-08-06Merge tag 'mm-stable-2022-08-03' of ↵Linus Torvalds3-17/+24
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "Most of the MM queue. A few things are still pending. Liam's maple tree rework didn't make it. This has resulted in a few other minor patch series being held over for next time. Multi-gen LRU still isn't merged as we were waiting for mapletree to stabilize. The current plan is to merge MGLRU into -mm soon and to later reintroduce mapletree, with a view to hopefully getting both into 6.1-rc1. Summary: - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe Lin, Yang Shi, Anshuman Khandual and Mike Rapoport - Some kmemleak fixes from Patrick Wang and Waiman Long - DAMON updates from SeongJae Park - memcg debug/visibility work from Roman Gushchin - vmalloc speedup from Uladzislau Rezki - more folio conversion work from Matthew Wilcox - enhancements for coherent device memory mapping from Alex Sierra - addition of shared pages tracking and CoW support for fsdax, from Shiyang Ruan - hugetlb optimizations from Mike Kravetz - Mel Gorman has contributed some pagealloc changes to improve latency and realtime behaviour. - mprotect soft-dirty checking has been improved by Peter Xu - Many other singleton patches all over the place" [ XFS merge from hell as per Darrick Wong in https://lore.kernel.org/all/YshKnxb4VwXycPO8@magnolia/ ] * tag 'mm-stable-2022-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (282 commits) tools/testing/selftests/vm/hmm-tests.c: fix build mm: Kconfig: fix typo mm: memory-failure: convert to pr_fmt() mm: use is_zone_movable_page() helper hugetlbfs: fix inaccurate comment in hugetlbfs_statfs() hugetlbfs: cleanup some comments in inode.c hugetlbfs: remove unneeded header file hugetlbfs: remove unneeded hugetlbfs_ops forward declaration hugetlbfs: use helper macro SZ_1{K,M} mm: cleanup is_highmem() mm/hmm: add a test for cross device private faults selftests: add soft-dirty into run_vmtests.sh selftests: soft-dirty: add test for mprotect mm/mprotect: fix soft-dirty check in can_change_pte_writable() mm: memcontrol: fix potential oom_lock recursion deadlock mm/gup.c: fix formatting in check_and_migrate_movable_page() xfs: fail dax mount if reflink is enabled on a partition mm/memcontrol.c: remove the redundant updating of stats_flush_threshold userfaultfd: don't fail on unrecognized features hugetlb_cgroup: fix wrong hugetlb cgroup numa stat ...
2022-08-05Merge tag 'asm-generic-6.0' of ↵Linus Torvalds2-3/+0
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic updates from Arnd Bergmann: "There are three independent sets of changes: - Sai Prakash Ranjan adds tracing support to the asm-generic version of the MMIO accessors, which is intended to help understand problems with device drivers and has been part of Qualcomm's vendor kernels for many years - A patch from Sebastian Siewior to rework the handling of IRQ stacks in softirqs across architectures, which is needed for enabling PREEMPT_RT - The last patch to remove the CONFIG_VIRT_TO_BUS option and some of the code behind that, after the last users of this old interface made it in through the netdev, scsi, media and staging trees" * tag 'asm-generic-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: uapi: asm-generic: fcntl: Fix typo 'the the' in comment arch/*/: remove CONFIG_VIRT_TO_BUS soc: qcom: geni: Disable MMIO tracing for GENI SE serial: qcom_geni_serial: Disable MMIO tracing for geni serial asm-generic/io: Add logging support for MMIO accessors KVM: arm64: Add a flag to disable MMIO trace for nVHE KVM lib: Add register read/write tracing support drm/meson: Fix overflow implicit truncation warnings irqchip/tegra: Fix overflow implicit truncation warnings coresight: etm4x: Use asm-generic IO memory barriers arm64: io: Use asm-generic high level MMIO accessors arch/*: Disable softirq stacks on PREEMPT_RT.
2022-08-05Merge tag 'microblaze-v5.20' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2-2/+1
Pull microblaze updates from Michal Simek: - Trivial comment fix - Remove HANDLE_DOMAIN_IRQ selection * tag 'microblaze-v5.20' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Fix some typos in comment arch: microblaze: Remove unused "select HANDLE_DOMAIN_IRQ"
2022-07-29microblaze: Fix some typos in commentSlark Xiao1-1/+1
Replace 'the the' with 'like the' in the comment. Replace 'an' with 'a'. Signed-off-by: Slark Xiao <slark_xiao@163.com> Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/20220721071520.48384-1-slark_xiao@163.com
2022-07-23PCI: Move isa_dma_bridge_buggy out of asm/dma.hStafford Horne1-6/+0
The isa_dma_bridge_buggy symbol is only used for x86_32, and only x86_32 platforms or quirks ever set it. Add a new linux/isa-dma.h header that #defines isa_dma_bridge_buggy to 0 except on x86_32, where we keep it as a variable, and remove all the arch- specific definitions. [bhelgaas: commit log] Suggested-by: Arnd Bergmann <arnd@arndb.de> Suggested-by: Christoph Hellwig <hch@infradead.org> Link: https://lore.kernel.org/r/20220722214944.831438-3-shorne@gmail.com Signed-off-by: Stafford Horne <shorne@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2022-07-18mm/mmap: drop ARCH_HAS_VM_GET_PAGE_PROTAnshuman Khandual1-1/+0
Now all the platforms enable ARCH_HAS_GET_PAGE_PROT. They define and export own vm_get_page_prot() whether custom or standard DECLARE_VM_GET_PAGE_PROT. Hence there is no need for default generic fallback for vm_get_page_prot(). Just drop this fallback and also ARCH_HAS_GET_PAGE_PROT mechanism. Link: https://lkml.kernel.org/r/20220711070600.2378316-27-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Brian Cain <bcain@quicinc.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-07-18microblaze/mm: enable ARCH_HAS_VM_GET_PAGE_PROTAnshuman Khandual3-17/+21
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-9-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Brian Cain <bcain@quicinc.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-06-30arch: microblaze: Remove unused "select HANDLE_DOMAIN_IRQ"Ying Sun1-1/+0
The "CONFIG_HANDLE_DOMAIN_IRQ" item has not been used right now. Remove the old unused selection in config MICROBLAZE. Signed-off-by: Ying Sun <sunying@nj.iscas.ac.cn> Link: https://lore.kernel.org/r/20220629080652.28029-1-sunying@nj.iscas.ac.cn Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-06-28arch/*/: remove CONFIG_VIRT_TO_BUSArnd Bergmann2-3/+0
All architecture-independent users of virt_to_bus() and bus_to_virt() have been fixed to use the dma mapping interfaces or have been removed now. This means the definitions on most architectures, and the CONFIG_VIRT_TO_BUS symbol are now obsolete and can be removed. The only exceptions to this are a few network and scsi drivers for m68k Amiga and VME machines and ppc32 Macintosh. These drivers work correctly with the old interfaces and are probably not worth changing. On alpha and parisc, virt_to_bus() were still used in asm/floppy.h. alpha can use isa_virt_to_bus() like x86 does, and parisc can just open-code the virt_to_phys() here, as this is architecture specific code. I tried updating the bus-virt-phys-mapping.rst documentation, which started as an email from Linus to explain some details of the Linux-2.0 driver interfaces. The bits about virt_to_bus() were declared obsolete backin 2000, and the rest is not all that relevant any more, so in the end I just decided to remove the file completely. Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Acked-by: Helge Deller <deller@gmx.de> # parisc Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-06-17mm: avoid unnecessary page fault retires on shared memory typesPeter Xu1-0/+4
I observed that for each of the shared file-backed page faults, we're very likely to retry one more time for the 1st write fault upon no page. It's because we'll need to release the mmap lock for dirty rate limit purpose with balance_dirty_pages_ratelimited() (in fault_dirty_shared_page()). Then after that throttling we return VM_FAULT_RETRY. We did that probably because VM_FAULT_RETRY is the only way we can return to the fault handler at that time telling it we've released the mmap lock. However that's not ideal because it's very likely the fault does not need to be retried at all since the pgtable was well installed before the throttling, so the next continuous fault (including taking mmap read lock, walk the pgtable, etc.) could be in most cases unnecessary. It's not only slowing down page faults for shared file-backed, but also add more mmap lock contention which is in most cases not needed at all. To observe this, one could try to write to some shmem page and look at "pgfault" value in /proc/vmstat, then we should expect 2 counts for each shmem write simply because we retried, and vm event "pgfault" will capture that. To make it more efficient, add a new VM_FAULT_COMPLETED return code just to show that we've completed the whole fault and released the lock. It's also a hint that we should very possibly not need another fault immediately on this page because we've just completed it. This patch provides a ~12% perf boost on my aarch64 test VM with a simple program sequentially dirtying 400MB shmem file being mmap()ed and these are the time it needs: Before: 650.980 ms (+-1.94%) After: 569.396 ms (+-1.38%) I believe it could help more than that. We need some special care on GUP and the s390 pgfault handler (for gmap code before returning from pgfault), the rest changes in the page fault handlers should be relatively straightforward. Another thing to mention is that mm_account_fault() does take this new fault as a generic fault to be accounted, unlike VM_FAULT_RETRY. I explicitly didn't touch hmm_vma_fault() and break_ksm() because they do not handle VM_FAULT_RETRY even with existing code, so I'm literally keeping them as-is. Link: https://lkml.kernel.org/r/20220530183450.42886-1-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Vineet Gupta <vgupta@kernel.org> Acked-by: Guo Ren <guoren@kernel.org> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Acked-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Alistair Popple <apopple@nvidia.com> Reviewed-by: Ingo Molnar <mingo@kernel.org> Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> [arm part] Acked-by: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Stafford Horne <shorne@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Brian Cain <bcain@quicinc.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Richard Weinberger <richard@nod.at> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Janosch Frank <frankja@linux.ibm.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Will Deacon <will@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Michal Simek <monstr@monstr.eu> Cc: Matt Turner <mattst88@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: David Hildenbrand <david@redhat.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Chris Zankel <chris@zankel.net> Cc: Hugh Dickins <hughd@google.com> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Rich Felker <dalias@libc.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Helge Deller <deller@gmx.de> Cc: Yoshinori Sato <ysato@users.osdn.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-06-04Merge tag 'kthread-cleanups-for-v5.19' of ↵Linus Torvalds1-5/+7
git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace Pull kthread updates from Eric Biederman: "This updates init and user mode helper tasks to be ordinary user mode tasks. Commit 40966e316f86 ("kthread: Ensure struct kthread is present for all kthreads") caused init and the user mode helper threads that call kernel_execve to have struct kthread allocated for them. This struct kthread going away during execve in turned made a use after free of struct kthread possible. Here, commit 343f4c49f243 ("kthread: Don't allocate kthread_struct for init and umh") is enough to fix the use after free and is simple enough to be backportable. The rest of the changes pass struct kernel_clone_args to clean things up and cause the code to make sense. In making init and the user mode helpers tasks purely user mode tasks I ran into two complications. The function task_tick_numa was detecting tasks without an mm by testing for the presence of PF_KTHREAD. The initramfs code in populate_initrd_image was using flush_delayed_fput to ensuere the closing of all it's file descriptors was complete, and flush_delayed_fput does not work in a userspace thread. I have looked and looked and more complications and in my code review I have not found any, and neither has anyone else with the code sitting in linux-next" * tag 'kthread-cleanups-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: sched: Update task_tick_numa to ignore tasks without an mm fork: Stop allowing kthreads to call execve fork: Explicitly set PF_KTHREAD init: Deal with the init process being a user mode process fork: Generalize PF_IO_WORKER handling fork: Explicity test for idle tasks in copy_thread fork: Pass struct kernel_clone_args into copy_thread kthread: Don't allocate kthread_struct for init and umh
2022-06-01Merge tag 'pwm/for-5.19-rc1' of ↵Linus Torvalds1-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "Quite a large number of conversions this time around, courtesy of Uwe who has been working tirelessly on these. No drivers of the legacy API are left at this point, so as a next step the old API can be removed. Support is added for a few new devices such as the Xilinx AXI timer- based PWMs and the PWM IP found on Sunplus SoCs. Other than that, there's a number of fixes, cleanups and optimizations" * tag 'pwm/for-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (43 commits) pwm: pwm-cros-ec: Add channel type support dt-bindings: google,cros-ec-pwm: Add the new -type compatible dt-bindings: Add mfd/cros_ec definitions pwm: Document that the pinstate of a disabled PWM isn't reliable pwm: twl-led: Implement .apply() callback pwm: lpc18xx: Implement .apply() callback pwm: mediatek: Implement .apply() callback pwm: lpc32xx: Implement .apply() callback pwm: tegra: Implement .apply() callback pwm: stmpe: Implement .apply() callback pwm: sti: Implement .apply() callback pwm: pwm-mediatek: Add support for MediaTek Helio X10 MT6795 dt-bindings: pwm: pwm-mediatek: Add documentation for MT6795 SoC pwm: tegra: Optimize period calculation pwm: renesas-tpu: Improve precision of period and duty_cycle calculation pwm: renesas-tpu: Improve maths to compute register settings pwm: renesas-tpu: Rename variables to match the usual naming pwm: renesas-tpu: Implement .apply() callback pwm: renesas-tpu: Make use of devm functions pwm: renesas-tpu: Make use of dev_err_probe() ...
2022-05-07fork: Generalize PF_IO_WORKER handlingEric W. Biederman1-4/+3
Add fn and fn_arg members into struct kernel_clone_args and test for them in copy_thread (instead of testing for PF_KTHREAD | PF_IO_WORKER). This allows any task that wants to be a user space task that only runs in kernel mode to use this functionality. The code on x86 is an exception and still retains a PF_KTHREAD test because x86 unlikely everything else handles kthreads slightly differently than user space tasks that start with a function. The functions that created tasks that start with a function have been updated to set ".fn" and ".fn_arg" instead of ".stack" and ".stack_size". These functions are fork_idle(), create_io_thread(), kernel_thread(), and user_mode_thread(). Link: https://lkml.kernel.org/r/20220506141512.516114-4-ebiederm@xmission.com Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2022-05-07fork: Pass struct kernel_clone_args into copy_threadEric W. Biederman1-2/+5
With io_uring we have started supporting tasks that are for most purposes user space tasks that exclusively run code in kernel mode. The kernel task that exec's init and tasks that exec user mode helpers are also user mode tasks that just run kernel code until they call kernel execve. Pass kernel_clone_args into copy_thread so these oddball tasks can be supported more cleanly and easily. v2: Fix spelling of kenrel_clone_args on h8300 Link: https://lkml.kernel.org/r/20220506141512.516114-2-ebiederm@xmission.com Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2022-05-02microblaze: fix typos in commentsJulia Lawall2-2/+2
Various spelling mistakes in comments. Detected with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Link: https://lore.kernel.org/r/20220430191122.8667-1-Julia.Lawall@inria.fr Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-04-22pwm: Add support for Xilinx AXI TimerSean Anderson1-0/+4
This adds PWM support for Xilinx LogiCORE IP AXI soft timers commonly found on Xilinx FPGAs. At the moment clock control is very basic: we just enable the clock during probe and pin the frequency. In the future, someone could add support for disabling the clock when not in use. Some common code has been specially demarcated. While currently only used by the PWM driver, it is anticipated that it may be split off in the future to be used by the timer driver as well. This driver was written with reference to Xilinx DS764 for v1.03.a [1]. [1] https://www.xilinx.com/support/documentation/ip_documentation/axi_timer/v1_03_a/axi_timer_ds764.pdf Signed-off-by: Sean Anderson <sean.anderson@seco.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2022-04-21microblaze: Add support for reserved memory defined by DTMichal Simek1-0/+3
In DT reserved memory nodes can be added as is described by Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt but Microblaze didn't have a support for it. The similar change was done for ARC by commit 1b10cb21d888 ("ARC: add support for reserved memory defined by device tree"). It is pretty much enough to call early_init_fdt_scan_reserved_mem(). Microblaze is not using initial_boot_params that's why there is no need to call early_init_fdt_reserve_self(). Signed-off-by: Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/da4395776bf0de7207767abcc8a5df05bf411816.1645795048.git.michal.simek@xilinx.com
2022-04-21microblaze: Wire memblock_dump_all()Michal Simek1-0/+2
Wire memblock_dump_all() to be able to see the whole memblock allocation. Dumps are enabled by passing memblock=debug via kernel command line. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/6f480b6010068872f429df69c8894cc3f1f38f46.1645795048.git.michal.simek@xilinx.com
2022-04-21microblaze: Use simple memmove/memcpy implementation from lib/string.cMichal Simek3-44/+5
This is based on previous commit ("microblaze: Use simple memset implementation from lib/string.c") where generic memset implementation is used when OPT_LIB_FUNCTION is not defined. The same change can be done for memset/memcpy implementation where doesn't make sense to have generic implementation in architecture code. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/1f5cfc026a8a458f3e3134ab80f65bd4ac7e3e8e.1645797329.git.michal.simek@xilinx.com
2022-04-21microblaze: Do loop unrolling for optimized memset implementationMichal Simek1-1/+12
Align implementation with memcpy and memmove where also remaining bytes are copied via final switch case instead of using simple implementations which loop. But this alignment has much stronger reason and definitely aligning implementation is not the key point here. It is just good to have in mind that the same technique is used already there. In GCC 10, now -ftree-loop-distribute-patterns optimization is on at O2. This optimization causes GCC to convert the while loop in memset.c into a call to memset. So this optimization is transforming a loop in a memset/memcpy into a call to the function itself. This makes the memset implementation as recursive. "-freestanding" option will disable the built-in library function but it has been added in generic library implementation. In default microblaze kernel defconfig we have CONFIG_OPT_LIB_FUNCTION enabled so it will always pick optimized version of memset which is target specific so we are replacing the while() loop with switch case to avoid recursive memset call. Issue with freestanding was already discussed in connection to commit 33d0f96ffd73 ("lib/string.c: Use freestanding environment") and also this is topic in glibc and gcc. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888 http://patchwork.ozlabs.org/project/glibc/patch/20191121021040.14554-1-sandra@codesourcery.com/ Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Mahesh Bodapati <mbodapat@xilinx.com> Link: https://lore.kernel.org/r/10a432e269a6d3349cf458e4f5792522779cba0d.1645797329.git.michal.simek@xilinx.com
2022-04-21microblaze: Use simple memset implementation from lib/string.cMichal Simek2-18/+4
On microblaze systems which are not using OPT_LIB_FUNCTION only simple memset is used. This function is already implemented in lib/string.c that's why it should be used instead. This change is done in respect of issue fixed by commit 33d0f96ffd73 ("lib/string.c: Use freestanding environment") where gcc-10.x moved -ftree-loop-distribute-patterns optimization is to O2 optimization level. This optimization causes GCC to convert the while loop in memset.c into a call to memset. So This optimization is transforming a loop in a memset/memcpy into a call to the function itself. This makes the memset implementation as recursive. Based on fix above -ffreestanding was used and it needs to be used on Microblaze too but the patch is not adding this flag it removes simple implementation to cause that generic implementation is used where this flag is already setup. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Mahesh Bodapati <mbodapat@xilinx.com> Link: https://lore.kernel.org/r/4a143e7654f72ee893dcea9769946e17d3570b16.1645797329.git.michal.simek@xilinx.com
2022-03-31Merge tag 'kbuild-v5.18-v2' of ↵Linus Torvalds3-4/+3
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Add new environment variables, USERCFLAGS and USERLDFLAGS to allow additional flags to be passed to user-space programs. - Fix missing fflush() bugs in Kconfig and fixdep - Fix a minor bug in the comment format of the .config file - Make kallsyms ignore llvm's local labels, .L* - Fix UAPI compile-test for cross-compiling with Clang - Extend the LLVM= syntax to support LLVM=<suffix> form for using a particular version of LLVm, and LLVM=<prefix> form for using custom LLVM in a particular directory path. - Clean up Makefiles * tag 'kbuild-v5.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: Make $(LLVM) more flexible kbuild: add --target to correctly cross-compile UAPI headers with Clang fixdep: use fflush() and ferror() to ensure successful write to files arch: syscalls: simplify uapi/kapi directory creation usr/include: replace extra-y with always-y certs: simplify empty certs creation in certs/Makefile certs: include certs/signing_key.x509 unconditionally kallsyms: ignore all local labels prefixed by '.L' kconfig: fix missing '# end of' for empty menu kconfig: add fflush() before ferror() check kbuild: replace $(if A,A,B) with $(or A,B) kbuild: Add environment variables for userprogs flags kbuild: unify cmd_copy and cmd_shipped