- 05 Jul, 2017 1 commit
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Mikulas Patocka authored
The pat_enabled() logic is broken on CPUs which do not support PAT and where the initialization code fails to call pat_init(). Due to that the enabled flag stays true and pat_enabled() returns true wrongfully. As a consequence the mappings, e.g. for Xorg, are set up with the wrong caching mode and the required MTRR setups are omitted. To cure this the following changes are required: 1) Make pat_enabled() return true only if PAT initialization was invoked and successful. 2) Invoke init_cache_modes() unconditionally in setup_arch() and remove the extra callsites in pat_disable() and the pat disabled code path in pat_init(). Also rename __pat_enabled to pat_disabled to reflect the real purpose of this variable. Fixes: 9cd25aac ("x86/mm/pat: Emulate PAT when it is disabled") Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: Bernhard Held <berny156@gmx.de> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: "Luis R. Rodriguez" <mcgrof@suse.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1707041749300.3456@file01.intranet.prod.int.rdu2.redhat.com
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- 04 Jul, 2017 5 commits
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Colin Ian King authored
The functions handle_uv2_busy, uv_flush_send_and_wait and find_another_by_swack are local to the source, so make them static. Also remove normal_busy as it is no longer used. Fixes various smatch warnings, such as: "symbol 'find_another_by_swack' was not declared. Should it be static?" "symbol 'handle_uv2_busy' was not declared. Should it be static?" Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: Mike Travis <mike.travis@hpe.com> Cc: Andrew Banman <abanman@hpe.com> Cc: kernel-janitors@vger.kernel.org Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Dou Liyang <douly.fnst@cn.fujitsu.com> Link: http://lkml.kernel.org/r/20170704083129.10559-1-colin.king@canonical.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull RAS updates from Thomas Gleixner: "The RAS updates for the 4.13 merge window: - Cleanup of the MCE injection facility (Borsilav Petkov) - Rework of the AMD/SMCA handling (Yazen Ghannam) - Enhancements for ACPI/APEI to handle new notitication types (Shiju Jose) - atomic_t to refcount_t conversion (Elena Reshetova) - A few fixes and enhancements all over the place" * 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: RAS/CEC: Check the correct variable in the debugfs error handling x86/mce: Always save severity in machine_check_poll() x86/MCE, xen/mcelog: Make /dev/mcelog registration messages more precise x86/mce: Update bootlog description to reflect behavior on AMD x86/mce: Don't disable MCA banks when offlining a CPU on AMD x86/mce/mce-inject: Preset the MCE injection struct x86/mce: Clean up include files x86/mce: Get rid of register_mce_write_callback() x86/mce: Merge mce_amd_inj into mce-inject x86/mce/AMD: Use saved threshold block info in interrupt handler x86/mce/AMD: Use msr_stat when clearing MCA_STATUS x86/mce/AMD: Carve out SMCA bank configuration x86/mce/AMD: Redo error logging from APIC LVT interrupt handlers x86/mce: Convert threshold_bank.cpus from atomic_t to refcount_t RAS: Make local function parse_ras_param() static ACPI/APEI: Handle GSIV and GPIO notification types
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull SMP hotplug updates from Thomas Gleixner: "This update is primarily a cleanup of the CPU hotplug locking code. The hotplug locking mechanism is an open coded RWSEM, which allows recursive locking. The main problem with that is the recursive nature as it evades the full lockdep coverage and hides potential deadlocks. The rework replaces the open coded RWSEM with a percpu RWSEM and establishes full lockdep coverage that way. The bulk of the changes fix up recursive locking issues and address the now fully reported potential deadlocks all over the place. Some of these deadlocks have been observed in the RT tree, but on mainline the probability was low enough to hide them away." * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits) cpu/hotplug: Constify attribute_group structures powerpc: Only obtain cpu_hotplug_lock if called by rtasd ARM/hw_breakpoint: Fix possible recursive locking for arch_hw_breakpoint_init cpu/hotplug: Remove unused check_for_tasks() function perf/core: Don't release cred_guard_mutex if not taken cpuhotplug: Link lock stacks for hotplug callbacks acpi/processor: Prevent cpu hotplug deadlock sched: Provide is_percpu_thread() helper cpu/hotplug: Convert hotplug locking to percpu rwsem s390: Prevent hotplug rwsem recursion arm: Prevent hotplug rwsem recursion arm64: Prevent cpu hotplug rwsem recursion kprobes: Cure hotplug lock ordering issues jump_label: Reorder hotplug lock and jump_label_lock perf/tracing/cpuhotplug: Fix locking order ACPI/processor: Use cpu_hotplug_disable() instead of get_online_cpus() PCI: Replace the racy recursion prevention PCI: Use cpu_hotplug_disable() instead of get_online_cpus() perf/x86/intel: Drop get_online_cpus() in intel_snb_check_microcode() x86/perf: Drop EXPORT of perf_check_microcode ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 timers updates from Thomas Gleixner: "This update contains: - The solution for the TSC deadline timer borkage, which is caused by a hardware problem in the TSC_ADJUST/TSC_DEADLINE_TIMER logic. The problem is documented now and fixed with a microcode update, so we can remove the workaround and just check for the microcode version. If the microcode is not up to date, then the TSC deadline timer is disabled. If the borkage is fixed by the proper microcode version, then the deadline timer can be used. In both cases the restrictions to the range of the TSC_ADJUST value, which were added as workarounds, are removed. - A few simple fixes and updates to the timer related x86 code" * 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/tsc: Call check_system_tsc_reliable() before unsynchronized_tsc() x86/hpet: Do not use smp_processor_id() in preemptible code x86/time: Make setup_default_timer_irq() static x86/tsc: Remove the TSC_ADJUST clamp x86/apic: Add TSC_DEADLINE quirk due to errata x86/apic: Change the lapic name in deadline mode
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 PCI updates from Thomas Gleixner: "This update provides the seperation of x86 PCI accessors from the global PCI lock in the generic PCI config space accessors. The reasons for this are: - x86 has it's own PCI config lock for various reasons, so the accessors have to lock two locks nested. - The ECAM (mmconfig) access to the extended configuration space does not require locking. The existing generic locking causes a massive lock contention when accessing the extended config space of the Uncore facility for performance monitoring. The commit which switched the access to the primary config space over to ECAM mode has been removed from the branch, so the primary config space is still accessed with type1 accessors properly serialized by the x86 internal locking. Bjorn agreed on merging this through the x86 tree" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/PCI: Select CONFIG_PCI_LOCKLESS_CONFIG PCI: Provide Kconfig option for lockless config space accessors x86/PCI/ce4100: Properly lock accessor functions x86/PCI: Abort if legacy init fails x86/PCI: Remove duplicate defines
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- 03 Jul, 2017 25 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq updates from Thomas Gleixner: "The irq department delivers: - Expand the generic infrastructure handling the irq migration on CPU hotplug and convert X86 over to it. (Thomas Gleixner) Aside of consolidating code this is a preparatory change for: - Finalizing the affinity management for multi-queue devices. The main change here is to shut down interrupts which are affine to a outgoing CPU and reenabling them when the CPU comes online again. That avoids moving interrupts pointlessly around and breaking and reestablishing affinities for no value. (Christoph Hellwig) Note: This contains also the BLOCK-MQ and NVME changes which depend on the rework of the irq core infrastructure. Jens acked them and agreed that they should go with the irq changes. - Consolidation of irq domain code (Marc Zyngier) - State tracking consolidation in the core code (Jeffy Chen) - Add debug infrastructure for hierarchical irq domains (Thomas Gleixner) - Infrastructure enhancement for managing generic interrupt chips via devmem (Bartosz Golaszewski) - Constification work all over the place (Tobias Klauser) - Two new interrupt controller drivers for MVEBU (Thomas Petazzoni) - The usual set of fixes, updates and enhancements all over the place" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (112 commits) irqchip/or1k-pic: Fix interrupt acknowledgement irqchip/irq-mvebu-gicp: Allocate enough memory for spi_bitmap irqchip/gic-v3: Fix out-of-bound access in gic_set_affinity nvme: Allocate queues for all possible CPUs blk-mq: Create hctx for each present CPU blk-mq: Include all present CPUs in the default queue mapping genirq: Avoid unnecessary low level irq function calls genirq: Set irq masked state when initializing irq_desc genirq/timings: Add infrastructure for estimating the next interrupt arrival time genirq/timings: Add infrastructure to track the interrupt timings genirq/debugfs: Remove pointless NULL pointer check irqchip/gic-v3-its: Don't assume GICv3 hardware supports 16bit INTID irqchip/gic-v3-its: Add ACPI NUMA node mapping irqchip/gic-v3-its-platform-msi: Make of_device_ids const irqchip/gic-v3-its: Make of_device_ids const irqchip/irq-mvebu-icu: Add new driver for Marvell ICU irqchip/irq-mvebu-gicp: Add new driver for Marvell GICP dt-bindings/interrupt-controller: Add DT binding for the Marvell ICU genirq/irqdomain: Remove auto-recursive hierarchy support irqchip/MSI: Use irq_domain_update_bus_token instead of an open coded access ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer updates from Thomas Gleixner: "A rather large update for timers/timekeeping: - compat syscall consolidation (Al Viro) - Posix timer consolidation (Christoph Helwig / Thomas Gleixner) - Cleanup of the device tree based initialization for clockevents and clocksources (Daniel Lezcano) - Consolidation of the FTTMR010 clocksource/event driver (Linus Walleij) - The usual set of small fixes and updates all over the place" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (93 commits) timers: Make the cpu base lock raw clocksource/drivers/mips-gic-timer: Fix an error code in 'gic_clocksource_of_init()' clocksource/drivers/fsl_ftm_timer: Unmap region obtained by of_iomap clocksource/drivers/tcb_clksrc: Make IO endian agnostic clocksource/drivers/sun4i: Switch to the timer-of common init clocksource/drivers/timer-of: Fix invalid iomap check Revert "ktime: Simplify ktime_compare implementation" clocksource/drivers: Fix uninitialized variable use in timer_of_init kselftests: timers: Add test for frequency step kselftests: timers: Fix inconsistency-check to not ignore first timestamp time: Add warning about imminent deprecation of CONFIG_GENERIC_TIME_VSYSCALL_OLD time: Clean up CLOCK_MONOTONIC_RAW time handling posix-cpu-timers: Make timespec to nsec conversion safe itimer: Make timeval to nsec conversion range limited timers: Fix parameter description of try_to_del_timer_sync() ktime: Simplify ktime_compare implementation clocksource/drivers/fttmr010: Factor out clock read code clocksource/drivers/fttmr010: Implement delay timer clocksource/drivers: Add timer-of common init routine clocksource/drivers/tcb_clksrc: Save timer context on suspend/resume ...
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull s390 updates from Martin Schwidefsky: "The bulk of the s390 patches for 4.13. Some new things but mostly bug fixes and cleanups. Noteworthy changes: - The SCM block driver is converted to blk-mq - Switch s390 to 5 level page tables. The virtual address space for a user space process can now have up to 16EB-4KB. - Introduce a ELF phdr flag for qemu to avoid the global vm.alloc_pgste which forces all processes to large page tables - A couple of PCI improvements to improve error recovery - Included is the merge of the base support for proper machine checks for KVM" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (52 commits) s390/dasd: Fix faulty ENODEV for RO sysfs attribute s390/pci: recognize name clashes with uids s390/pci: provide more debug information s390/pci: fix handling of PEC 306 s390/pci: improve pci hotplug s390/pci: introduce clp_get_state s390/pci: improve error handling during fmb (de)registration s390/pci: improve unreg_ioat error handling s390/pci: improve error handling during interrupt deregistration s390/pci: don't cleanup in arch_setup_msi_irqs KVM: s390: Backup the guest's machine check info s390/nmi: s390: New low level handling for machine check happening in guest s390/fpu: export save_fpu_regs for all configs s390/kvm: avoid global config of vm.alloc_pgste=1 s390: rename struct psw_bits members s390: rename psw_bits enums s390/mm: use correct address space when enabling DAT s390/cio: introduce io_subchannel_type s390/ipl: revert Load Normal semantics for LPAR CCW-type re-IPL s390/dumpstack: remove raw stack dump ...
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc updates from Helge Deller: "Main changes are: - Added support to the parisc dma functions to return DMA_ERROR_CODE if DMA isn't possible. This fixes a long standing kernel crash if parport_pc is enabled (by Thomas Bogendoerfer, marked for stable series). - Use the compat_sys_keyctl() in compat mode (by Eric Biggers, marked for stable series). - Initial support for the Page Deallocation Table (PDT) which is maintained by firmware and holds the list of memory addresses which had physical errors. By checking that list we can prevent Linux to use those broken memory areas. - Ensure IRQs are off in switch_mm(). - Report SIGSEGV instead of SIGBUS when running out of stack. - Mark the cr16 clocksource stable on single-socket and single-core machines" * 'parisc-4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs parisc: Report SIGSEGV instead of SIGBUS when running out of stack parisc: use compat_sys_keyctl() parisc: Don't hardcode PSW values in hpmc code parisc: Don't hardcode PSW values in gsc_*() functions parisc: Avoid zeroing gr[0] in fixup_exception() parisc/mm: Ensure IRQs are off in switch_mm() parisc: Add Page Deallocation Table (PDT) support parisc: Enhance detection of synchronous cr16 clocksources parisc: Drop per_cpu uaccess related exception_data struct parisc: Inline trivial exception code in lusercopy.S
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git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds authored
Pull microblaze updates from Michal Simek: - timer fix - use simplified macro in dma.c - wire-up new syscall - remove asp-generic wrappers - fix MMU table handling - defconfig updates - low-level entry.S changes * tag 'microblaze-4.13-rc1' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Fix MSR flags when returning from exception microblaze: Separate GP registers from MSR handling microblaze: Enabling CONFIG_BRIDGE in mmu_defconfig microblaze: Enabling CONFIGS related to MTD microblaze: Update defconfigs microblaze: mm: Flush TLB to ensure correct mapping when higmem ON microblaze: remove asm-generic wrapper headers microblaze: wire up statx syscall microblaze: Set ->min_delta_ticks and ->max_delta_ticks for timer microblaze: use sg_phys()
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68kLinus Torvalds authored
Pull m68k updates from Geert Uytterhoeven: - NuBus improvements and cleanups - defconfig updates - Fix debugger syscall restart interactions, leading to the global removal of ptrace_signal_deliver() * tag 'm68k-for-v4.13-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: Remove ptrace_signal_deliver m68k/defconfig: Update defconfigs for v4.12-rc1 nubus: Fix pointer validation nubus: Remove slot zero probe
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 mm updates from Ingo Molnar: "The main changes in this cycle were: - Continued work to add support for 5-level paging provided by future Intel CPUs. In particular we switch the x86 GUP code to the generic implementation. (Kirill A. Shutemov) - Continued work to add PCID CPU support to native kernels as well. In this round most of the focus is on reworking/refreshing the TLB flush infrastructure for the upcoming PCID changes. (Andy Lutomirski)" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits) x86/mm: Delete a big outdated comment about TLB flushing x86/mm: Don't reenter flush_tlb_func_common() x86/KASLR: Fix detection 32/64 bit bootloaders for 5-level paging x86/ftrace: Exclude functions in head64.c from function-tracing x86/mmap, ASLR: Do not treat unlimited-stack tasks as legacy mmap x86/mm: Remove reset_lazy_tlbstate() x86/ldt: Simplify the LDT switching logic x86/boot/64: Put __startup_64() into .head.text x86/mm: Add support for 5-level paging for KASLR x86/mm: Make kernel_physical_mapping_init() support 5-level paging x86/mm: Add sync_global_pgds() for configuration with 5-level paging x86/boot/64: Add support of additional page table level during early boot x86/boot/64: Rename init_level4_pgt and early_level4_pgt x86/boot/64: Rewrite startup_64() in C x86/boot/compressed: Enable 5-level paging during decompression stage x86/boot/efi: Define __KERNEL32_CS GDT on 64-bit configurations x86/boot/efi: Fix __KERNEL_CS definition of GDT entry on 64-bit configurations x86/boot/efi: Cleanup initialization of GDT entries x86/asm: Fix comment in return_from_SYSCALL_64() x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 microcode updates from Ingo Molnar: "The main changes are a fix early microcode application for resume-from-RAM, plus a 32-bit initrd placement fix - by Borislav Petkov" * 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/microcode: Make a couple of symbols static x86/microcode/intel: Save pointer to ucode patch for early AP loading x86/microcode: Look for the initrd at the correct address on 32-bit
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 hyperv updates from Ingo Molnar: "Avoid boot time TSC calibration on Hyper-V hosts, to improve calibration robustness. (Vitaly Kuznetsov)" * 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/hyperv: Read TSC frequency from a synthetic MSR x86/hyperv: Check frequency MSRs presence according to the specification
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 debug update from Ingo Molnar: "A single fix for an off-by one bug in test_nmi_ipi() that probably doesn't matter in practice" * 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/nmi: Fix timeout test in test_nmi_ipi()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 cleanups from Ingo Molnar: "Two small cleanups" * 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/paravirt: Remove unnecessary return from void function x86/boot: Add missing strchr() declaration
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 boot updates from Ingo Molnar: "The main changes in this cycle were KASLR improvements for rare environments with special boot options, by Baoquan He. Also misc smaller changes/cleanups" * 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/debug: Extend the lower bound of crash kernel low reservations x86/boot: Remove unused copy_*_gs() functions x86/KASLR: Use the right memcpy() implementation Documentation/kernel-parameters.txt: Update 'memmap=' boot option description x86/KASLR: Handle the memory limit specified by the 'memmap=' and 'mem=' boot options x86/KASLR: Parse all 'memmap=' boot option entries
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 asm updates from Ingo Molnar: "A single commit micro-optimizing short user copies on certain Intel CPUs" * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/uaccess: Optimize copy_user_enhanced_fast_string() for short strings
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 apic updates from Ingo Molnar: "Janitorial changes: removal of an unused function plus __init annotations" * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Make arch_init_msi/htirq_domain __init x86/apic: Make init_legacy_irqs() __init x86/ioapic: Remove unused IO_APIC_irq_trigger() function
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull nohz updates from Ingo Molnar: "The main changes in this cycle relate to fixing another bad (but sporadic and hard to detect) interaction between the dynticks scheduler tick and hrtimers, plus related improvements to better detection and handling of similar problems - by Frédéric Weisbecker" * 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: nohz: Fix spurious warning when hrtimer and clockevent get out of sync nohz: Fix buggy tick delay on IRQ storms nohz: Reset next_tick cache even when the timer has no regs nohz: Fix collision between tick and other hrtimers, again nohz: Add hrtimer sanity check
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler updates from Ingo Molnar: "The main changes in this cycle were: - Add the SYSTEM_SCHEDULING bootup state to move various scheduler debug checks earlier into the bootup. This turns silent and sporadically deadly bugs into nice, deterministic splats. Fix some of the splats that triggered. (Thomas Gleixner) - A round of restructuring and refactoring of the load-balancing and topology code (Peter Zijlstra) - Another round of consolidating ~20 of incremental scheduler code history: this time in terms of wait-queue nomenclature. (I didn't get much feedback on these renaming patches, and we can still easily change any names I might have misplaced, so if anyone hates a new name, please holler and I'll fix it.) (Ingo Molnar) - sched/numa improvements, fixes and updates (Rik van Riel) - Another round of x86/tsc scheduler clock code improvements, in hope of making it more robust (Peter Zijlstra) - Improve NOHZ behavior (Frederic Weisbecker) - Deadline scheduler improvements and fixes (Luca Abeni, Daniel Bristot de Oliveira) - Simplify and optimize the topology setup code (Lauro Ramos Venancio) - Debloat and decouple scheduler code some more (Nicolas Pitre) - Simplify code by making better use of llist primitives (Byungchul Park) - ... plus other fixes and improvements" * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (103 commits) sched/cputime: Refactor the cputime_adjust() code sched/debug: Expose the number of RT/DL tasks that can migrate sched/numa: Hide numa_wake_affine() from UP build sched/fair: Remove effective_load() sched/numa: Implement NUMA node level wake_affine() sched/fair: Simplify wake_affine() for the single socket case sched/numa: Override part of migrate_degrades_locality() when idle balancing sched/rt: Move RT related code from sched/core.c to sched/rt.c sched/deadline: Move DL related code from sched/core.c to sched/deadline.c sched/cpuset: Only offer CONFIG_CPUSETS if SMP is enabled sched/fair: Spare idle load balancing on nohz_full CPUs nohz: Move idle balancer registration to the idle path sched/loadavg: Generalize "_idle" naming to "_nohz" sched/core: Drop the unused try_get_task_struct() helper function sched/fair: WARN() and refuse to set buddy when !se->on_rq sched/debug: Fix SCHED_WARN_ON() to return a value on !CONFIG_SCHED_DEBUG as well sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming sched/wait: Move bit_wait_table[] and related functionality from sched/core.c to sched/wait_bit.c sched/wait: Split out the wait_bit*() APIs from <linux/wait.h> into <linux/wait_bit.h> sched/wait: Re-adjust macro line continuation backslashes in <linux/wait.h> ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf updates from Ingo Molnar: "Most of the changes are for tooling, the main changes in this cycle were: - Improve Intel-PT hardware tracing support, both on the kernel and on the tooling side: PTWRITE instruction support, power events for C-state tracing, etc. (Adrian Hunter) - Add support to measure SMI cost to the x86 architecture, with tooling support in 'perf stat' (Kan Liang) - Support function filtering in 'perf ftrace', plus related improvements (Namhyung Kim) - Allow adding and removing fields to the default 'perf script' columns, using + or - as field prefixes to do so (Andi Kleen) - Allow resolving the DSO name with 'perf script -F brstack{sym,off},dso' (Mark Santaniello) - Add perf tooling unwind support for PowerPC (Paolo Bonzini) - ... and various other improvements as well" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (84 commits) perf auxtrace: Add CPU filter support perf intel-pt: Do not use TSC packets for calculating CPU cycles to TSC perf intel-pt: Update documentation to include new ptwrite and power events perf intel-pt: Add example script for power events and PTWRITE perf intel-pt: Synthesize new power and "ptwrite" events perf intel-pt: Move code in intel_pt_synth_events() to simplify attr setting perf intel-pt: Factor out intel_pt_set_event_name() perf intel-pt: Tidy messages into called function intel_pt_synth_event() perf intel-pt: Tidy Intel PT evsel lookup into separate function perf intel-pt: Join needlessly wrapped lines perf intel-pt: Remove unused instructions_sample_period perf intel-pt: Factor out common code synthesizing event samples perf script: Add synthesized Intel PT power and ptwrite events perf/x86/intel: Constify the 'lbr_desc[]' array and make a function static perf script: Add 'synth' field for synthesized event payloads perf auxtrace: Add itrace option to output power events perf auxtrace: Add itrace option to output ptwrite events tools include: Add byte-swapping macros to kernel.h perf script: Add 'synth' event type for synthesized events x86/insn: perf tools: Add new ptwrite instruction ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking updates from Ingo Molnar: "The main changes in this cycle were: - Add CONFIG_REFCOUNT_FULL=y to allow the disabling of the 'full' (robustness checked) refcount_t implementation with slightly lower runtime overhead. (Kees Cook) The lighter weight variant is the default. The two variants use the same API. Having this variant was a precondition by some maintainers to merge refcount_t cleanups. - Add lockdep support for rtmutexes (Peter Zijlstra) - liblockdep fixes and improvements (Sasha Levin, Ben Hutchings) - ... misc fixes and improvements" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) locking/refcount: Remove the half-implemented refcount_sub() API locking/refcount: Create unchecked atomic_t implementation locking/rtmutex: Don't initialize lockdep when not required locking/selftest: Add RT-mutex support locking/selftest: Remove the bad unlock ordering test rt_mutex: Add lockdep annotations MAINTAINERS: Claim atomic*_t maintainership locking/x86: Remove the unused atomic_inc_short() methd tools/lib/lockdep: Remove private kernel headers tools/lib/lockdep: Hide liblockdep output from test results tools/lib/lockdep: Add dummy current_gfp_context() tools/include: Add IS_ERR_OR_NULL to err.h tools/lib/lockdep: Add empty __is_[module,kernel]_percpu_address tools/lib/lockdep: Include err.h tools/include: Add (mostly) empty include/linux/sched/mm.h tools/lib/lockdep: Use LDFLAGS tools/lib/lockdep: Remove double-quotes from soname tools/lib/lockdep: Fix object file paths used in an out-of-tree build tools/lib/lockdep: Fix compilation for 4.11 tools/lib/lockdep: Don't mix fd-based and stream IO ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI updates from Ingo Molnar: "The main changes in this cycle were: - Rework the EFI capsule loader to allow for workarounds for non-compliant firmware (Ard Biesheuvel) - Implement a capsule loader quirk for Quark X102x (Jan Kiszka) - Enable SMBIOS/DMI support for the ARM architecture (Ard Biesheuvel) - Add CONFIG_EFI_PGT_DUMP=y support for x86-32 and kexec (Sai Praneeth) - Fixes for EFI support for Xen dom0 guests running under x86-64 hosts (Daniel Kiper)" * 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/xen/efi: Initialize only the EFI struct members used by Xen efi: Process the MEMATTR table only if EFI_MEMMAP is enabled efi/arm: Enable DMI/SMBIOS x86/efi: Extend CONFIG_EFI_PGT_DUMP support to x86_32 and kexec as well efi/efi_test: Use memdup_user() helper efi/capsule: Add support for Quark security header efi/capsule-loader: Use page addresses rather than struct page pointers efi/capsule-loader: Redirect calls to efi_capsule_setup_info() via weak alias efi/capsule: Remove NULL test on kmap() efi/capsule-loader: Use a cached copy of the capsule header efi/capsule: Adjust return type of efi_capsule_setup_info() efi/capsule: Clean up pr_err/_info() messages efi/capsule: Remove pr_debug() on ENOMEM or EFAULT efi/capsule: Fix return code on failing kmap/vmap
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull RCU updates from Ingo Molnar: "The sole purpose of these changes is to shrink and simplify the RCU code base, which has suffered from creeping bloat over the past couple of years. The end result is a net removal of ~2700 lines of code: 79 files changed, 1496 insertions(+), 4211 deletions(-) Plus there's a marked reduction in the Kconfig space complexity as well, here's the number of matches on 'grep RCU' in the .config: before after x86-defconfig 17 15 x86-allmodconfig 33 20" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (86 commits) rcu: Remove RCU CPU stall warnings from Tiny RCU rcu: Remove event tracing from Tiny RCU rcu: Move RCU debug Kconfig options to kernel/rcu rcu: Move RCU non-debug Kconfig options to kernel/rcu rcu: Eliminate NOCBs CPU-state Kconfig options rcu: Remove debugfs tracing srcu: Remove Classic SRCU srcu: Fix rcutorture-statistics typo rcu: Remove SPARSE_RCU_POINTER Kconfig option rcu: Remove the now-obsolete PROVE_RCU_REPEATEDLY Kconfig option rcu: Remove typecheck() from RCU locking wrapper functions rcu: Remove #ifdef moving rcu_end_inkernel_boot from rcupdate.h rcu: Remove nohz_full full-system-idle state machine rcu: Remove the RCU_KTHREAD_PRIO Kconfig option rcu: Remove *_SLOW_* Kconfig options srcu: Use rnp->lock wrappers to replace explicit memory barriers rcu: Move rnp->lock wrappers for SRCU use rcu: Convert rnp->lock wrappers to macros for SRCU use rcu: Refactor #includes from include/linux/rcupdate.h bcm47xx: Fix build regression ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull objtool updates from Ingo Molnar: "This is an extensive rewrite of the objdump tool to track all stack pointer modifications through the machine instructions of disassembled functions found in kernel .o files. This re-design removes the prior dependency on CONFIG_FRAME_POINTERS, with the goal to prepare the tool to generate kernel debuginfo data in the future. There's also an increase in checking/tracking robustness as a side effect as well. No (intended) changes to existing functionality" * 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Silence warnings for functions which use IRET objtool: Implement stack validation 2.0 objtool, x86: Add several functions and files to the objtool whitelist objtool: Move checking code to check.c
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git://git.kernel.org/pub/scm/linux/kernel/git/bp/bpLinus Torvalds authored
Pull EDAC updates from Borislav Petkov: "Nothing earth-shattering - just the normal development flow of cleanups, improvements, fixes and such. Summary: - i31200_edac: Add Kabylake support (Jason Baron) - sb_edac: resolve memory controller detection issues on asymmetric setups with not all DIMM slots being populated (Tony Luck and Qiuxu Zhuo) - misc cleanups and fixlets all over" * tag 'edac_for_4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (22 commits) EDAC, pnd2: Fix Apollo Lake DIMM detection EDAC, i5000, i5400: Fix definition of NRECMEMB register EDAC, pnd2: Make function sbi_send() static EDAC, pnd2: Return proper error value from apl_rd_reg() EDAC, altera: Simplify calculation of total memory EDAC, sb_edac: Avoid creating SOCK memory controller EDAC, mce_amd: Fix typo in SMCA error description EDAC, mv64x60: Sanity check edac_op_state before registering EDAC, thunderx: Fix a warning during l2c debugfs node creation EDAC, mv64x60: Check driver registration success EDAC, ie31200: Add Intel Kaby Lake CPU support EDAC, mv64x60: Replace in_le32()/out_le32() with readl()/writel() EDAC, mv64x60: Fix pdata->name EDAC, sb_edac: Bump driver version and do some cleanups EDAC, sb_edac: Check if ECC enabled when at least one DIMM is present EDAC, sb_edac: Drop NUM_CHANNELS from 8 back to 4 EDAC, sb_edac: Carve out dimm-populating loop EDAC, sb_edac: Fix mod_name EDAC, sb_edac: Assign EDAC memory controller per h/w controller EDAC, sb_edac: Don't use "Socket#" in the memory controller name ...
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull core block/IO updates from Jens Axboe: "This is the main pull request for the block layer for 4.13. Not a huge round in terms of features, but there's a lot of churn related to some core cleanups. Note this depends on the UUID tree pull request, that Christoph already sent out. This pull request contains: - A series from Christoph, unifying the error/stats codes in the block layer. We now use blk_status_t everywhere, instead of using different schemes for different places. - Also from Christoph, some cleanups around request allocation and IO scheduler interactions in blk-mq. - And yet another series from Christoph, cleaning up how we handle and do bounce buffering in the block layer. - A blk-mq debugfs series from Bart, further improving on the support we have for exporting internal information to aid debugging IO hangs or stalls. - Also from Bart, a series that cleans up the request initialization differences across types of devices. - A series from Goldwyn Rodrigues, allowing the block layer to return failure if we will block and the user asked for non-blocking. - Patch from Hannes for supporting setting loop devices block size to that of the underlying device. - Two series of patches from Javier, fixing various issues with lightnvm, particular around pblk. - A series from me, adding support for write hints. This comes with NVMe support as well, so applications can help guide data placement on flash to improve performance, latencies, and write amplification. - A series from Ming, improving and hardening blk-mq support for stopping/starting and quiescing hardware queues. - Two pull requests for NVMe updates. Nothing major on the feature side, but lots of cleanups and bug fixes. From the usual crew. - A series from Neil Brown, greatly improving the bio rescue set support. Most notably, this kills the bio rescue work queues, if we don't really need them. - Lots of other little bug fixes that are all over the place" * 'for-4.13/block' of git://git.kernel.dk/linux-block: (217 commits) lightnvm: pblk: set line bitmap check under debug lightnvm: pblk: verify that cache read is still valid lightnvm: pblk: add initialization check lightnvm: pblk: remove target using async. I/Os lightnvm: pblk: use vmalloc for GC data buffer lightnvm: pblk: use right metadata buffer for recovery lightnvm: pblk: schedule if data is not ready lightnvm: pblk: remove unused return variable lightnvm: pblk: fix double-free on pblk init lightnvm: pblk: fix bad le64 assignations nvme: Makefile: remove dead build rule blk-mq: map all HWQ also in hyperthreaded system nvmet-rdma: register ib_client to not deadlock in device removal nvme_fc: fix error recovery on link down. nvmet_fc: fix crashes on bad opcodes nvme_fc: Fix crash when nvme controller connection fails. nvme_fc: replace ioabort msleep loop with completion nvme_fc: fix double calls to nvme_cleanup_cmd() nvme-fabrics: verify that a controller returns the correct NQN nvme: simplify nvme_dev_attrs_are_visible ...
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git://git.infradead.org/users/hch/uuidLinus Torvalds authored
Pull uuid subsystem from Christoph Hellwig: "This is the new uuid subsystem, in which Amir, Andy and I have started consolidating our uuid/guid helpers and improving the types used for them. Note that various other subsystems have pulled in this tree, so I'd like it to go in early. UUID/GUID summary: - introduce the new uuid_t/guid_t types that are going to replace the somewhat confusing uuid_be/uuid_le types and make the terminology fit the various specs, as well as the userspace libuuid library. (me, based on a previous version from Amir) - consolidated generic uuid/guid helper functions lifted from XFS and libnvdimm (Amir and me) - conversions to the new types and helpers (Amir, Andy and me)" * tag 'uuid-for-4.13' of git://git.infradead.org/users/hch/uuid: (34 commits) ACPI: hns_dsaf_acpi_dsm_guid can be static mmc: sdhci-pci: make guid intel_dsm_guid static uuid: Take const on input of uuid_is_null() and guid_is_null() thermal: int340x_thermal: fix compile after the UUID API switch thermal: int340x_thermal: Switch to use new generic UUID API acpi: always include uuid.h ACPI: Switch to use generic guid_t in acpi_evaluate_dsm() ACPI / extlog: Switch to use new generic UUID API ACPI / bus: Switch to use new generic UUID API ACPI / APEI: Switch to use new generic UUID API acpi, nfit: Switch to use new generic UUID API MAINTAINERS: add uuid entry tmpfs: generate random sb->s_uuid scsi_debug: switch to uuid_t nvme: switch to uuid_t sysctl: switch to use uuid_t partitions/ldm: switch to use uuid_t overlayfs: use uuid_t instead of uuid_be fs: switch ->s_uuid to uuid_t ima/policy: switch to use uuid_t ...
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Thomas Bogendoerfer authored
Enabling parport pc driver on a B2600 (and probably other 64bit PARISC systems) produced following BUG: CPU: 0 PID: 1 Comm: swapper Not tainted 4.12.0-rc5-30198-g1132d5e7 #156 task: 000000009e050000 task.stack: 000000009e04c000 YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI PSW: 00001000000001101111111100001111 Not tainted r00-03 000000ff0806ff0f 000000009e04c990 0000000040871b78 000000009e04cac0 r04-07 0000000040c14de0 ffffffffffffffff 000000009e07f098 000000009d82d200 r08-11 000000009d82d210 0000000000000378 0000000000000000 0000000040c345e0 r12-15 0000000000000005 0000000040c345e0 0000000000000000 0000000040c9d5e0 r16-19 0000000040c345e0 00000000f00001c4 00000000f00001bc 0000000000000061 r20-23 000000009e04ce28 0000000000000010 0000000000000010 0000000040b89e40 r24-27 0000000000000003 0000000000ffffff 000000009d82d210 0000000040c14de0 r28-31 0000000000000000 000000009e04ca90 000000009e04cb40 0000000000000000 sr00-03 0000000000000000 0000000000000000 0000000000000000 0000000000000000 sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000 IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000404aece0 00000000404aece4 IIR: 03ffe01f ISR: 0000000010340000 IOR: 000001781304cac8 CPU: 0 CR30: 000000009e04c000 CR31: 00000000e2976de2 ORIG_R28: 0000000000000200 IAOQ[0]: sba_dma_supported+0x80/0xd0 IAOQ[1]: sba_dma_supported+0x84/0xd0 RP(r2): parport_pc_probe_port+0x178/0x1200 Cause is a call to dma_coerce_mask_and_coherenet in parport_pc_probe_port, which PARISC DMA API doesn't handle very nicely. This commit gives back DMA_ERROR_CODE for DMA API calls, if device isn't capable of DMA transaction. Cc: <stable@vger.kernel.org> # v3.13+ Signed-off-by:
Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by:
Helge Deller <deller@gmx.de>
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- 02 Jul, 2017 7 commits
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Linus Torvalds authored
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Sylvain 'ythier' Hitier authored
Signed-off-by:
Sylvain 'ythier' Hitier <sylvain.hitier@gmail.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Helge Deller authored
When a process runs out of stack the parisc kernel wrongly faults with SIGBUS instead of the expected SIGSEGV signal. This example shows how the kernel faults: do_page_fault() command='a.out' type=15 address=0xfaac2000 in libc-2.24.so[f8308000+16c000] trap #15: Data TLB miss fault, vm_start = 0xfa2c2000, vm_end = 0xfaac2000 The vma->vm_end value is the first address which does not belong to the vma, so adjust the check to include vma->vm_end to the range for which to send the SIGSEGV signal. This patch unbreaks building the debian libsigsegv package. Cc: stable@vger.kernel.org Signed-off-by:
Helge Deller <deller@gmx.de>
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Eric Biggers authored
Architectures with a compat syscall table must put compat_sys_keyctl() in it, not sys_keyctl(). The parisc architecture was not doing this; fix it. Cc: stable@vger.kernel.org Signed-off-by:
Eric Biggers <ebiggers@google.com> Acked-by:
Helge Deller <deller@gmx.de> Signed-off-by:
Helge Deller <deller@gmx.de>
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git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds authored
Pull MIPS fixes from Ralf Baechle: "Here's a final round of fixes for 4.12: - Fix misordered instructions in assembly code making kenel startup via UHB unreliable. - Fix special case of MADDF and MADDF emulation. - Fix alignment issue in address calculation in pm-cps on 64 bit. - Fix IRQ tracing & lockdep when rescheduling - Systems with MAARs require post-DMA cache flushes. The reordering fix and the MADDF/MSUBF fix have sat in linux-next for a number of days. The others haven't propagated from my pull tree to linux-next yet but all have survived manual testing and Imagination's automated test system and there are no pending bug reports" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: Avoid accidental raw backtrace MIPS: Perform post-DMA cache flushes on systems with MAARs MIPS: Fix IRQ tracing & lockdep when rescheduling MIPS: pm-cps: Drop manual cache-line alignment of ready_count MIPS: math-emu: Handle zero accumulator case in MADDF and MSUBF separately MIPS: head: Reorder instructions missing a delay slot
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git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM fix from Russell King: "One final fix for 4.12 - Doug found a boot failure case triggered by requesting a non-even MB vmalloc size" * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 8685/1: ensure memblock-limit is pmd-aligned
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Kees Cook authored
CONFIG_REFCOUNT_FULL=y (correctly) does not provide a refcount_sub(), which should not be part of proper refcount design patterns. Remove the erroneous extern and the later !CONFIG_REFCOUNT_FULL accidental implementation. Signed-off-by:
Kees Cook <keescook@chromium.org> Cc: Elena Reshetova <elena.reshetova@intel.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> Fixes: 29dee3c0 ("locking/refcounts: Out-of-line everything") Link: http://lkml.kernel.org/r/20170701180129.GA17405@beastSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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- 01 Jul, 2017 2 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "Fixlets for x86: - Prevent kexec crash when KASLR is enabled, which was caused by an address calculation bug - Restore the freeing of PUDs on memory hot remove - Correct a negated pointer check in the intel uncore performance monitoring driver - Plug a memory leak in an error exit path in the RDT code" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/intel_rdt: Fix memory leak on mount failure x86/boot/KASLR: Fix kexec crash due to 'virt_addr' calculation bug x86/boot/KASLR: Add checking for the offset of kernel virtual address randomization perf/x86/intel/uncore: Fix wrong box pointer check x86/mm/hotplug: Fix BUG_ON() after hot-remove by not freeing PUD
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fix from Thomas Gleixner: "The last fix for perf for this cycles: - Prevent a segfault when kernel.kptr_restrict=2 is set by avoiding a null pointer dereference" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf machine: Fix segfault for kernel.kptr_restrict=2
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