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* Merge tag 's390-5.7-1' of ↵Linus Torvalds2020-04-042-0/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Update maintainers. Niklas Schnelle takes over zpci and Vineeth Vijayan common io code. - Extend cpuinfo to include topology information. - Add new extended counters for IBM z15 and sampling buffer allocation rework in perf code. - Add control over zeroing out memory during system restart. - CCA protected key block version 2 support and other fixes/improvements in crypto code. - Convert to new fallthrough; annotations. - Replace zero-length arrays with flexible-arrays. - QDIO debugfs and other small improvements. - Drop 2-level paging support optimization for compat tasks. Varios mm cleanups. - Remove broken and unused hibernate / power management support. - Remove fake numa support which does not bring any benefits. - Exclude offline CPUs from CPU topology masks to be more consistent with other architectures. - Prevent last branching instruction address leaking to userspace. - Other small various fixes and improvements all over the code. * tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (57 commits) s390/mm: cleanup init_new_context() callback s390/mm: cleanup virtual memory constants usage s390/mm: remove page table downgrade support s390/qdio: set qdio_irq->cdev at allocation time s390/qdio: remove unused function declarations s390/ccwgroup: remove pm support s390/ap: remove power management code from ap bus and drivers s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc s390/mm: cleanup arch_get_unmapped_area() and friends s390/ism: remove pm support s390/cio: use fallthrough; s390/vfio: use fallthrough; s390/zcrypt: use fallthrough; s390: use fallthrough; s390/cpum_sf: Fix wrong page count in error message s390/diag: fix display of diagnose call statistics s390/ap: Remove ap device suspend and resume callbacks s390/pci: Improve handling of unset UID s390/pci: Fix zpci_alloc_domain() over allocation s390/qdio: pass ISC as parameter to chsc_sadc() ...
| * s390/config: do not select VIRTIO_CONSOLE via KconfigChristian Borntraeger2020-03-112-0/+2
| | | | | | | | | | | | | | | | | | | | select does not ensure that dependencies are also selected. Instead of selecting VIRTIO_CONSOLE from S390_GUEST we should rather add this to the defconfigs. So we update those as well. Reported-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
* | s390/defconfig: enable CONFIG_PROTECTED_VIRTUALIZATION_GUESTChristian Borntraeger2020-02-172-21/+18
|/ | | | | | | | | | The guest support for protected virtualization is default on most distributions. Also refresh defconfig and debug_defconfig. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
* locking/refcount: Consolidate implementations of refcount_tWill Deacon2019-11-251-1/+0
| | | | | | | | | | | | | | | | | | The generic implementation of refcount_t should be good enough for everybody, so remove ARCH_HAS_REFCOUNT and REFCOUNT_FULL entirely, leaving the generic implementation enabled unconditionally. Signed-off-by: Will Deacon <will@kernel.org> Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Kees Cook <keescook@chromium.org> Tested-by: Hanjun Guo <guohanjun@huawei.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Elena Reshetova <elena.reshetova@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20191121115902.2551-9-will@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* s390: update defconfigsHeiko Carstens2019-10-043-18/+33
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
* Merge tag 's390-5.4-1' of ↵Linus Torvalds2019-09-172-0/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Add support for IBM z15 machines. - Add SHA3 and CCA AES cipher key support in zcrypt and pkey refactoring. - Move to arch_stack_walk infrastructure for the stack unwinder. - Various kasan fixes and improvements. - Various command line parsing fixes. - Improve decompressor phase debuggability. - Lift no bss usage restriction for the early code. - Use refcount_t for reference counters for couple of places in mm code. - Logging improvements and return code fix in vfio-ccw code. - Couple of zpci fixes and minor refactoring. - Remove some outdated documentation. - Fix secure boot detection. - Other various minor code clean ups. * tag 's390-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits) s390: remove pointless drivers-y in drivers/s390/Makefile s390/cpum_sf: Fix line length and format string s390/pci: fix MSI message data s390: add support for IBM z15 machines s390/crypto: Support for SHA3 via CPACF (MSA6) s390/startup: add pgm check info printing s390/crypto: xts-aes-s390 fix extra run-time crypto self tests finding vfio-ccw: fix error return code in vfio_ccw_sch_init() s390: vfio-ap: fix warning reset not completed s390/base: remove unused s390_base_mcck_handler s390/sclp: Fix bit checked for has_sipl s390/zcrypt: fix wrong handling of cca cipher keygenflags s390/kasan: add kdump support s390/setup: avoid using strncmp with hardcoded length s390/sclp: avoid using strncmp with hardcoded length s390/module: avoid using strncmp with hardcoded length s390/pci: avoid using strncmp with hardcoded length s390/kaslr: reserve memory for kasan usage s390/mem_detect: provide single get_mem_detect_end s390/cmma: reuse kstrtobool for option value parsing ...
| * s390/crypto: Support for SHA3 via CPACF (MSA6)Joerg Schmidbauer2019-09-132-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces sha3 support for s390. - Rework the s390-specific SHA1 and SHA2 related code to provide the basis for SHA3. - Provide two new kernel modules sha3_256_s390 and sha3_512_s390 together with new kernel options. Signed-off-by: Joerg Schmidbauer <jschmidb@de.ibm.com> Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com> Reviewed-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* | s390: update configsHeiko Carstens2019-07-293-228/+366
|/ | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
* Merge tag 'kbuild-v5.3' of ↵Linus Torvalds2019-07-131-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 ...
| * kbuild: add CONFIG_HEADERS_INSTALL and loosen the dependency of samplesMasahiro Yamada2019-06-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | s390: replace defconfig with performance_defconfigHeiko Carstens2019-06-192-768/+514
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace defconfig with performance_defconfig. defconfig had some more or less random debug options enabled, where nobody knows why anymore. Just remove the old defconfig and replace it with performance_defconfig, which reduces the number of configs to maintain. A config with debugging options enabled is debug_defconfig which is supposed to be rather close to performance_defconfig except that is has debug options enabled. Acked-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
* | Update default configurationMartin Schwidefsky2019-06-153-3/+8
| | | | | | | | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* | s390/configs: remove useless UEVENT_HELPER_PATHKrzysztof Kozlowski2019-06-072-2/+0
|/ | | | | | | | | | | | | | | | 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: Heiko Carstens <heiko.carstens@de.ibm.com>
* s390: move arch/s390/defconfig to arch/s390/configs/defconfigMasahiro Yamada2019-05-141-0/+254
| | | | | | | | | | | | | | | | | | | | | | | As of Linux 5.1, alpha and s390 are the last architectures that have defconfig in arch/*/ instead of arch/*/configs/. $ find arch -name defconfig | sort arch/alpha/defconfig arch/arm64/configs/defconfig arch/csky/configs/defconfig arch/nds32/configs/defconfig arch/riscv/configs/defconfig arch/s390/defconfig The arch/$(ARCH)/defconfig is the hard-coded default in Kconfig, and I want to deprecate it after evacuating the remaining defconfig into the standard location, arch/*/configs/. Define KBUILD_DEFCONFIG like other architectures, and move defconfig into the configs/ subdirectory. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/kexec_file: Signature verification prototypePhilipp Rudo2019-04-292-0/+2
| | | | | | | | | Add kernel signature verification to kexec_file. The verification is based on module signature verification and works with kernel images signed via scripts/sign-file. Signed-off-by: Philipp Rudo <prudo@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* fscrypt: remove filesystem specific build config optionChandan Rajendra2019-01-242-2/+2
| | | | | | | | | | | | In order to have a common code base for fscrypt "post read" processing for all filesystems which support encryption, this commit removes filesystem specific build config option (e.g. CONFIG_EXT4_FS_ENCRYPTION) and replaces it with a build option (i.e. CONFIG_FS_ENCRYPTION) whose value affects all the filesystems making use of fscrypt. Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com> Signed-off-by: Eric Biggers <ebiggers@google.com>
* s390: update defconfigsHeiko Carstens2018-11-052-5/+22
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* crypto: x86 - remove SHA multibuffer routines and mcryptdArd Biesheuvel2018-09-042-2/+0
| | | | | | | | | | | | | | | | | | | | | | As it turns out, the AVX2 multibuffer SHA routines are currently broken [0], in a way that would have likely been noticed if this code were in wide use. Since the code is too complicated to be maintained by anyone except the original authors, and since the performance benefits for real-world use cases are debatable to begin with, it is better to drop it entirely for the moment. [0] https://marc.info/?l=linux-crypto-vger&m=153476243825350&w=2 Suggested-by: Eric Biggers <ebiggers@google.com> Cc: Megha Dey <megha.dey@linux.intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* s390: update defconfigsSebastian Ott2018-04-272-9/+8
| | | | | | | | | | | | Change the following to y: arch/s390/configs/performance_defconfig:262:warning: symbol value 'm' invalid for NF_TABLES_IPV4 arch/s390/configs/performance_defconfig:264:warning: symbol value 'm' invalid for NF_TABLES_ARP arch/s390/configs/performance_defconfig:285:warning: symbol value 'm' invalid for NF_TABLES_IPV6 arch/s390/configs/performance_defconfig:306:warning: symbol value 'm' invalid for NF_TABLES_BRIDGE Signed-off-by: Sebastian Ott <sebott@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: rename default_defconfig to debug_defconfigHeiko Carstens2018-04-161-0/+0
| | | | | | | | The name debug_defconfig reflects what the config is actually good for and should be less confusing. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: remove gcov defconfigHeiko Carstens2018-04-161-661/+0
| | | | | | | This config is not needed anymore. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update defconfigMartin Schwidefsky2018-04-162-16/+35
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/kexec_file: Add kexec_file_load system callPhilipp Rudo2018-04-161-0/+1
| | | | | | | | | This patch adds the kexec_file_load system call to s390 as well as the arch specific functions common code requires to work. Loaders for the different file types will be added later. Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* firmware: Drop FIRMWARE_IN_KERNEL Kconfig optionBenjamin Gilbert2018-01-251-1/+0
| | | | | | | | | | | It doesn't actually do anything. Merge its help text into EXTRA_FIRMWARE. Fixes: 5620a0d1aacd ("firmware: delete in-kernel firmware") Fixes: 0946b2fb38fd ("firmware: cleanup FIRMWARE_IN_KERNEL message") Signed-off-by: Benjamin Gilbert <benjamin.gilbert@coreos.com> Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* s390: Remove CONFIG_HARDENED_USERCOPYMichael Holzheu2017-11-163-12/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When running the crash tool on a s390 live system we get a kernel panic for reading memory within the kernel image: # uname -a Linux r3545011 4.14.0-rc8-00066-g1c9dbd4615fd #45 SMP PREEMPT Fri Nov 10 16:16:22 CET 2017 s390x s390x s390x GNU/Linux # crash /boot/vmlinux-devel /dev/mem # crash> rd 0x100000 usercopy: kernel memory exposure attempt detected from 0000000000100000 (<kernel text>) (8 bytes) ------------[ cut here ]------------ kernel BUG at mm/usercopy.c:72! illegal operation: 0001 ilc:1 [#1] PREEMPT SMP. Modules linked in: CPU: 0 PID: 1461 Comm: crash Not tainted 4.14.0-rc8-00066-g1c9dbd4615fd-dirty #46 Hardware name: IBM 2827 H66 706 (z/VM 6.3.0) task: 000000001ad10100 task.stack: 000000001df78000 Krnl PSW : 0704d00180000000 000000000038165c (__check_object_size+0x164/0x1d0) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3 Krnl GPRS: 0000000012440e1d 0000000080000000 0000000000000061 00000000001cabc0 00000000001cc6d6 0000000000000000 0000000000cc4ed2 0000000000001000 000003ffc22fdd20 0000000000000008 0000000000100008 0000000000000001 0000000000000008 0000000000100000 0000000000381658 000000001df7bc90 Krnl Code: 000000000038164c: c020004a1c4a larl %r2,cc4ee0 0000000000381652: c0e5fff2581b brasl %r14,1cc688 #0000000000381658: a7f40001 brc 15,38165a >000000000038165c: eb42000c000c srlg %r4,%r2,12 0000000000381662: eb32001c000c srlg %r3,%r2,28 0000000000381668: c0110003ffff lgfi %r1,262143 000000000038166e: ec31ff752065 clgrj %r3,%r1,2,381558 0000000000381674: a7f4ff67 brc 15,381542 Call Trace: ([<0000000000381658>] __check_object_size+0x160/0x1d0) [<000000000082263a>] read_mem+0xaa/0x130. [<0000000000386182>] __vfs_read+0x42/0x168. [<000000000038632e>] vfs_read+0x86/0x140. [<0000000000386a26>] SyS_read+0x66/0xc0. [<0000000000ace6a4>] system_call+0xc4/0x2b0. INFO: lockdep is turned off. Last Breaking-Event-Address: [<0000000000381658>] __check_object_size+0x160/0x1d0 Kernel panic - not syncing: Fatal exception: panic_on_oops With CONFIG_HARDENED_USERCOPY copy_to_user() checks in __check_object_size() if the source address is within the kernel image. When the crash tool reads from 0x100000, this check leads to the kernel BUG(). So disable the kernel config option until this bug is fixed. Corresponding bug report on LKML: https://lkml.org/lkml/2017/11/10/341 Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2017-11-133-19/+10
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Heiko Carstens: "Since Martin is on vacation you get the s390 pull request for the v4.15 merge window this time from me. Besides a lot of cleanups and bug fixes these are the most important changes: - a new regset for runtime instrumentation registers - hardware accelerated AES-GCM support for the aes_s390 module - support for the new CEX6S crypto cards - support for FORTIFY_SOURCE - addition of missing z13 and new z14 instructions to the in-kernel disassembler - generate opcode tables for the in-kernel disassembler out of a simple text file instead of having to manually maintain those tables - fast memset16, memset32 and memset64 implementations - removal of named saved segment support - hardware counter support for z14 - queued spinlocks and queued rwlocks implementations for s390 - use the stack_depth tracking feature for s390 BPF JIT - a new s390_sthyi system call which emulates the sthyi (store hypervisor information) instruction - removal of the old KVM virtio transport - an s390 specific CPU alternatives implementation which is used in the new spinlock code" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (88 commits) MAINTAINERS: add virtio-ccw.h to virtio/s390 section s390/noexec: execute kexec datamover without DAT s390: fix transactional execution control register handling s390/bpf: take advantage of stack_depth tracking s390: simplify transactional execution elf hwcap handling s390/zcrypt: Rework struct ap_qact_ap_info. s390/virtio: remove unused header file kvm_virtio.h s390: avoid undefined behaviour s390/disassembler: generate opcode tables from text file s390/disassembler: remove insn_to_mnemonic() s390/dasd: avoid calling do_gettimeofday() s390: vfio-ccw: Do not attempt to free no-op, test and tic cda. s390: remove named saved segment support s390/archrandom: Reconsider s390 arch random implementation s390/pci: do not require AIS facility s390/qdio: sanitize put_indicator s390/qdio: use atomic_cmpxchg s390/nmi: avoid using long-displacement facility s390: pass endianness info to sparse s390/decompressor: remove informational messages ...
| * s390: update defconfigMartin Schwidefsky2017-10-163-19/+10
| | | | | | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | s390: fix zfcpdump-configDimitri John Ledkov2017-10-161-0/+2
|/ | | | | | | | | | | | | zipl from s390-tools generates root=/dev/ram0 kernel cmdline for zfcpdump, thus BLK_DEV_RAM is required. zfcpdump initrd mounts DEBUG_FS, thus is also required. Bug-Ubuntu: https://launchpad.net/bugs/1722735 Bug-Ubuntu: https://launchpad.net/bugs/1719290 Signed-off-by: Dimitri John Ledkov <xnox@ubuntu.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update defconfigMartin Schwidefsky2017-06-084-16/+84
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: enable ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INITHeiko Carstens2017-03-283-0/+3
| | | | | | | | | | | | Deferred struct page initialization works on s390. However it makes only sense for the fake numa case, since the kthreads that initialize struct pages are started per node. Without fake numa there is just a single node and therefore no gain. However there is no reason to not enable this feature. Therefore select the config option and enable the feature in all config files. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/configs//zfcpdump_defconfig: Remove CONFIG_SCSI_SRP_ATTRSMichael Holzheu2017-03-221-1/+0
| | | | | Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTSAnton Blanchard2017-03-013-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | We have uses of CONFIG_UPROBE_EVENT and CONFIG_KPROBE_EVENT as well as CONFIG_UPROBE_EVENTS and CONFIG_KPROBE_EVENTS. Consistently use the plurals. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: acme@kernel.org Cc: alexander.shishkin@linux.intel.com Cc: davem@davemloft.net Cc: sparclinux@vger.kernel.org Link: http://lkml.kernel.org/r/20170216060050.20866-1-anton@ozlabs.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* s390/pkey: Introduce pkey kernel moduleHarald Freudenberger2017-02-232-0/+2
| | | | | | | | | | | | | | This patch introcudes a new kernel module pkey which is providing protected key handling and management functions. The pkey API is available within the kernel for other s390 specific code to create and manage protected keys. Additionally the functions are exported to user space via IOCTL calls. The implementation makes extensive use of functions provided by the zcrypt device driver. For generating protected keys from secure keys there is also a CEX coprocessor card needed. Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update defconfigsHeiko Carstens2017-01-163-46/+64
| | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* s390: update defconfigHeiko Carstens2016-11-233-3/+11
| | | | | | | | | Enable the contiguous memory allocator but set the default size to zero. If somebody wants to use the cma allocator the "cma=" kernel parameter has to be used. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2016-10-043-9/+28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Martin Schwidefsky: "The new features and main improvements in this merge for v4.9 - Support for the UBSAN sanitizer - Set HAVE_EFFICIENT_UNALIGNED_ACCESS, it improves the code in some places - Improvements for the in-kernel fpu code, in particular the overhead for multiple consecutive in kernel fpu users is recuded - Add a SIMD implementation for the RAID6 gen and xor operations - Add RAID6 recovery based on the XC instruction - The PCI DMA flush logic has been improved to increase the speed of the map / unmap operations - The time synchronization code has seen some updates And bug fixes all over the place" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits) s390/con3270: fix insufficient space padding s390/con3270: fix use of uninitialised data MAINTAINERS: update DASD maintainer s390/cio: fix accidental interrupt enabling during resume s390/dasd: add missing \n to end of dev_err messages s390/config: Enable config options for Docker s390/dasd: make query host access interruptible s390/dasd: fix panic during offline processing s390/dasd: fix hanging offline processing s390/pci_dma: improve lazy flush for unmap s390/pci_dma: split dma_update_trans s390/pci_dma: improve map_sg s390/pci_dma: simplify dma address calculation s390/pci_dma: remove dma address range check iommu/s390: simplify registration of I/O address translation parameters s390: migrate exception table users off module.h and onto extable.h s390: export header for CLP ioctl s390/vmur: fix irq pointer dereference in int handler s390/dasd: add missing KOBJ_CHANGE event for unformatted devices s390: enable UBSAN ...
| * s390/config: Enable config options for DockerMichael Holzheu2016-09-273-9/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following config options are required/recommended for running Docker: Networking: - CONFIG_NF_NAT_MASQUERADE_IPV4=m - CONFIG_NF_NAT_MASQUERADE_IPV6=m - CONFIG_IPVLAN=m - CGROUP_NET_PRIO=y Storage drivers: - CONFIG_DM_THIN_PROVISIONING=m - CONFIG_OVERLAY_FS=m Scheduling: - CONFIG_FAIR_GROUP_SCHED=y - CONFIG_CFS_BANDWIDTH=y Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | mm/usercopy: get rid of CONFIG_DEBUG_STRICT_USER_COPY_CHECKSJosh Poimboeuf2016-08-303-3/+0
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are three usercopy warnings which are currently being silenced for gcc 4.6 and newer: 1) "copy_from_user() buffer size is too small" compile warning/error This is a static warning which happens when object size and copy size are both const, and copy size > object size. I didn't see any false positives for this one. So the function warning attribute seems to be working fine here. Note this scenario is always a bug and so I think it should be changed to *always* be an error, regardless of CONFIG_DEBUG_STRICT_USER_COPY_CHECKS. 2) "copy_from_user() buffer size is not provably correct" compile warning This is another static warning which happens when I enable __compiletime_object_size() for new compilers (and CONFIG_DEBUG_STRICT_USER_COPY_CHECKS). It happens when object size is const, but copy size is *not*. In this case there's no way to compare the two at build time, so it gives the warning. (Note the warning is a byproduct of the fact that gcc has no way of knowing whether the overflow function will be called, so the call isn't dead code and the warning attribute is activated.) So this warning seems to only indicate "this is an unusual pattern, maybe you should check it out" rather than "this is a bug". I get 102(!) of these warnings with allyesconfig and the __compiletime_object_size() gcc check removed. I don't know if there are any real bugs hiding in there, but from looking at a small sample, I didn't see any. According to Kees, it does sometimes find real bugs. But the false positive rate seems high. 3) "Buffer overflow detected" runtime warning This is a runtime warning where object size is const, and copy size > object size. All three warnings (both static and runtime) were completely disabled for gcc 4.6 with the following commit: 2fb0815c9ee6 ("gcc4: disable __compiletime_object_size for GCC 4.6+") That commit mistakenly assumed that the false positives were caused by a gcc bug in __compiletime_object_size(). But in fact, __compiletime_object_size() seems to be working fine. The false positives were instead triggered by #2 above. (Though I don't have an explanation for why the warnings supposedly only started showing up in gcc 4.6.) So remove warning #2 to get rid of all the false positives, and re-enable warnings #1 and #3 by reverting the above commit. Furthermore, since #1 is a real bug which is detected at compile time, upgrade it to always be an error. Having done all that, CONFIG_DEBUG_STRICT_USER_COPY_CHECKS is no longer needed. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Byungchul Park <byungchul.park@lge.com> Cc: Nilay Vaish <nilayvaish@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* s390/config: make the vector optimized crc function builtinChristian Borntraeger2016-08-083-3/+3
| | | | | | | | | For all configs with CONFIG_BTRFS_FS = y we should also make the optimized crc module builtin. Otherwise early mounts will fall back to the software variant. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: Updated kernel config filesHendrik Brueckner2016-06-153-0/+3
| | | | | Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/config: update default configurationHeiko Carstens2016-05-234-46/+72
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/configs: update default configurationsHeiko Carstens2016-01-114-51/+34
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/defconfig: set SCSI_DH=ySebastian Ott2015-10-013-3/+3
| | | | | | | | | | | Fix this warning: arch/s390/configs/performance_defconfig:380:warning: symbol value 'm' invalid for SCSI_DH Introduced via 086b91d052ebe4ead5d28021afe3bdfd70af15bf (scsi_dh: integrate into the core SCSI code) Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/configs//zfcpdump_defconfig: Remove CONFIG_MEMSTICKMichael Holzheu2015-09-171-5/+0
| | | | | | | | | This config option is completely irrelevant for zfcpdump and unfortunately causes a kernel panic on recent kernels in "mspro_block_init()/driver_register()". Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/numa: enable support in s390 configsPhilipp Hachtmann2015-08-043-0/+7
| | | | | Signed-off-by: Philipp Hachtmann <phacht@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: new default configurationHeiko Carstens2015-06-253-23/+21
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update default configurationMartin Schwidefsky2015-01-224-1/+4
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update default configurationMartin Schwidefsky2014-10-274-71/+30
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: Update defconfigs which were missing CONFIG_NET.David S. Miller2014-09-244-0/+4
| | | | | | | | | Commit df568d8e ("scsi: Use 'depends' with LIBFC instead of 'select'.") removed what happened to be the only instance of 'select NET'. Defconfigs that were relying on the select now lack networking support. Signed-off-by: David S. Miller <davem@davemloft.net>
* tgt: defconfig cleanupBart Van Assche2014-07-173-6/+0
| | | | | | | | | | | | | | Because of the removal of the scsi_tgt kernel module, the kbuild variables CONFIG_SCSI_TGT, CONFIG_SCSI_SRP_TGT_ATTRS and CONFIG_SCSI_FC_TGT_ATTRS are obsolete. This patch removes these variables. This patch is the result of the following command: find -name '*defconfig' | while read f; do grep -vwE 'CONFIG_SCSI_TGT|CONFIG_SCSI_SRP_TGT_ATTRS|CONFIG_SCSI_FC_TGT_ATTRS|CONFIG_SRP' $f >/tmp/t && mv /tmp/t $f; done Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de>
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