- Mar 07, 2018
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Ross Zwisler authored
When you load nfit_test you currently see the following error in dmesg: nfit_test nfit_test.0: found a zero length table '0' parsing nfit This happens because when we parse the nfit_test.0 table via acpi_nfit_init(), we specify a size of nfit_test->nfit_size. For the first pass through nfit_test.0 where (t->setup_hotplug == 0) this is the size of the entire buffer we allocated, including space for the hot plug structures, not the size that we've actually filled in. Fix this by only trying to parse the size of the structures that we've filled in. Signed-off-by:
Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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Ross Zwisler authored
It turns out that we were overrunning the 'nfit_buf' buffer in nfit_test0_setup() in the (t->setup_hotplug == 1) case because we failed to correctly account for all of the acpi_nfit_memory_map structures. Fix the structure count which will increase the allocation size of 'nfit_buf' in nfit_test0_alloc(). Also add some WARN_ON()s to nfit_test0_setup() and nfit_test1_setup() to catch future issues where the size of the buffer doesn't match the amount of data we're writing. Signed-off-by:
Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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Ross Zwisler authored
In nfit_test0_setup() and nfit_test1_setup() we keep an 'offset' value which we use to calculate where in our 'nfit_buf' we will place our next structure. The handling of 'offset' and the calculation of the placement of the next structure is a bit inconsistent, though. We don't update 'offset' after we insert each structure, sometimes causing us to update it for multiple structures' sizes at once. When calculating the position of the next structure we aren't always able to just use 'offset', but sometimes have to add in other structure sizes as well. Fix this by updating 'offset' after each structure insertion in a consistent way, allowing us to always calculate the position of the next structure to be inserted by just using 'nfit_buf + offset'. Signed-off-by:
Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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Dan Williams authored
Dynamic debug can be instructed to add the function name to the debug output using the +f switch, so there is no need for the dax modules to do it again. If a user decides to add the +f switch for the dax modules' dynamic debug this results in double prints of the function name. Reported-by:
Johannes Thumshirn <jthumshirn@suse.de> Reported-by:
Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by:
Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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Dan Williams authored
Dynamic debug can be instructed to add the function name to the debug output using the +f switch, so there is no need for the libnvdimm modules to do it again. If a user decides to add the +f switch for libnvdimm's dynamic debug this results in double prints of the function name. Reported-by:
Johannes Thumshirn <jthumshirn@suse.de> Reported-by:
Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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- Mar 06, 2018
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Johannes Thumshirn authored
Dynamic debug can be instructed to add the function name to the debug output using the +f switch, so there is no need for the nfit module to do it again. If a user decides to add the +f switch for nfit's dynamic debug this results in double prints of the function name like the following: [ 2391.935383] acpi_nfit_ctl: nfit ACPI0012:00: acpi_nfit_ctl:nmem8 cmd: 10: func: 1 input length: 0 Thus remove the stray __func__ printing. Signed-off-by:
Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by:
Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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- Mar 05, 2018
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A small set of fixes for x86: - Add missing instruction suffixes to assembly code so it can be compiled by newer GAS versions without warnings. - Switch refcount WARN exceptions to UD2 as we did in general - Make the reboot on Intel Edison platforms work - A small documentation update so text and sample command match" * 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Documentation, x86, resctrl: Make text and sample command match x86/platform/intel-mid: Handle Intel Edison reboot correctly x86/asm: Add instruction suffixes to bitops x86/entry/64: Add instruction suffix x86/refcounts: Switch to UD2 for exceptions
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86/pti fixes from Thomas Gleixner: "Three fixes related to melted spectrum: - Sync the cpu_entry_area page table to initial_page_table on 32 bit. Otherwise suspend/resume fails because resume uses initial_page_table and triggers a triple fault when accessing the cpu entry area. - Zero the SPEC_CTL MRS on XEN before suspend to address a shortcoming in the hypervisor. - Fix another switch table detection issue in objtool" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table objtool: Fix another switch table detection issue x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fixes from Thomas Gleixner: "A small set of fixes from the timer departement: - Add a missing timer wheel clock forward when migrating timers off a unplugged CPU to prevent operating on a stale clock base and missing timer deadlines. - Use the proper shift count to extract data from a register value to prevent evaluating unrelated bits - Make the error return check in the FSL timer driver work correctly. Checking an unsigned variable for less than zero does not really work well. - Clarify the confusing comments in the ARC timer code" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timers: Forward timer base before migrating timers clocksource/drivers/arc_timer: Update some comments clocksource/drivers/mips-gic-timer: Use correct shift count to extract data clocksource/drivers/fsl_ftm_timer: Fix error return checking
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixlet from Thomas Gleixner: "Just a documentation update for the missing device tree property of the R-Car M3N interrupt controller" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: dt-bindings/irqchip/renesas-irqc: Document R-Car M3-N support
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linuxLinus Torvalds authored
Pull btrfs fixes from David Sterba: - when NR_CPUS is large, a SRCU structure can significantly inflate size of the main filesystem structure that would not be possible to allocate by kmalloc, so the kvalloc fallback is used - improved error handling - fix endiannes when printing some filesystem attributes via sysfs, this is could happen when a filesystem is moved between different endianity hosts - send fixes: the NO_HOLE mode should not send a write operation for a file hole - fix log replay for for special files followed by file hardlinks - fix log replay failure after unlink and link combination - fix max chunk size calculation for DUP allocation * tag 'for-4.16-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: Btrfs: fix log replay failure after unlink and link combination Btrfs: fix log replay failure after linking special file and fsync Btrfs: send, fix issuing write op when processing hole in no data mode btrfs: use proper endianness accessors for super_copy btrfs: alloc_chunk: fix DUP stripe size handling btrfs: Handle btrfs_set_extent_delalloc failure in relocate_file_extent_cluster btrfs: handle failure of add_pending_csums btrfs: use kvzalloc to allocate btrfs_fs_info
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- Mar 04, 2018
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "A driver fix and a documentation fix (which makes dependency handling for the next cycle easier)" * 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: octeon: Prevent error message on bus error dt-bindings: at24: sort manufacturers alphabetically
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fixes from Dan Williams: "A 4.16 regression fix, three fixes for -stable, and a cleanup fix: - During the merge window support for the new ACPI NVDIMM Platform Capabilities structure disabled support for "deep flush", a force-unit- access like mechanism for persistent memory. Restore that mechanism. - VFIO like RDMA is yet one more memory registration / pinning interface that is incompatible with Filesystem-DAX. Disable long term pins of Filesystem-DAX mappings via VFIO. - The Filesystem-DAX detection to prevent long terms pins mistakenly also disabled Device-DAX pins which are not subject to the same block- map collision concerns. - Similar to the setup path, softlockup warnings can trigger in the shutdown path for large persistent memory namespaces. Teach for_each_device_pfn() to perform cond_resched() in all cases. - Boaz noticed that the might_sleep() in dax_direct_access() is stale as of the v4.15 kernel. These have received a build success notification from the 0day robot, and the longterm pin fixes have appeared in -next. However, I recently rebased the tree to remove some other fixes that need to be reworked after review feedback. * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: memremap: fix softlockup reports at teardown libnvdimm: re-enable deep flush for pmem devices via fsync() vfio: disable filesystem-dax page pinning dax: fix vma_is_fsdax() helper dax: ->direct_access does not sleep anymore
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Linus Torvalds authored
Merge tag 'kbuild-fixes-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - suppress sparse warnings about unknown attributes - fix typos and stale comments - fix build error of arch/sh - fix wrong use of ld-option vs cc-ldoption - remove redundant GCC_PLUGINS_CFLAGS assignment - fix another memory leak of Kconfig - fix line number in error messages of Kconfig - do not write confusing CONFIG_DEFCONFIG_LIST out to .config - add xstrdup() to Kconfig to handle memory shortage errors - show also a Debian package name if ncurses is missing * tag 'kbuild-fixes-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: MAINTAINERS: take over Kconfig maintainership kconfig: fix line number in recursive inclusion error message Coccinelle: memdup: Fix typo in warning messages kconfig: Update ncurses package names for menuconfig kbuild/kallsyms: trivial typo fix kbuild: test --build-id linker flag by ld-option instead of cc-ldoption kbuild: drop superfluous GCC_PLUGINS_CFLAGS assignment kconfig: Don't leak choice names during parsing sh: fix build error for empty CONFIG_BUILTIN_DTB_SOURCE kconfig: set SYMBOL_AUTO to the symbol marked with defconfig_list kconfig: add xstrdup() helper kbuild: disable sparse warnings about unknown attributes Makefile: Fix lying comment re. silentoldconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds authored
Pull media fixes from Mauro Carvalho Chehab: - some build fixes with randconfigs - an m88ds3103 fix to prevent an OOPS if the chip doesn't provide the right version during probe (with can happen if the hardware hangs) - a potential out of array bounds reference in tvp5150 - some fixes and improvements in the DVB memory mapped API (added for kernel 4.16) * tag 'media/v4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: media: vb2: Makefile: place vb2-trace together with vb2-core media: Don't let tvp5150_get_vbi() go out of vbi_ram_default array media: dvb: update buffer mmaped flags and frame counter media: dvb: add continuity error indicators for memory mapped buffers media: dmxdev: Fix the logic that enables DMA mmap support media: dmxdev: fix error code for invalid ioctls media: m88ds3103: don't call a non-initalized function media: au0828: add VIDEO_V4L2 dependency media: dvb: fix DVB_MMAP dependency media: dvb: fix DVB_MMAP symbol name media: videobuf2: fix build issues with vb2-trace media: videobuf2: Add VIDEOBUF2_V4L2 Kconfig option for VB2 V4L2 part
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git://www.linux-watchdog.org/linux-watchdogLinus Torvalds authored
Pull watchdog fixes from Wim Van Sebroeck: - rave-sp: add NVMEM dependency - build fixes for i6300esb_wdt, xen_wdt and sp5100_tco * tag 'linux-watchdog-4.16-fixes-1' of git://www.linux-watchdog.org/linux-watchdog: watchdog: sp5100_tco.c: fix potential build failure watchdog: xen_wdt: fix potential build failure watchdog: i6300esb: fix build failure watchdog: rave-sp: add NVMEM dependency
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- Mar 03, 2018
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM fixes from Radim Krčmář: "x86: - fix NULL dereference when using userspace lapic - optimize spectre v1 mitigations by allowing guests to use LFENCE - make microcode revision configurable to prevent guests from unnecessarily blacklisting spectre v2 mitigation feature" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: fix vcpu initialization with userspace lapic KVM: X86: Allow userspace to define the microcode version KVM: X86: Introduce kvm_get_msr_feature() KVM: SVM: Add MSR-based feature support for serializing LFENCE KVM: x86: Add a framework for supporting MSR-based features
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Dan Williams authored
The cond_resched() currently in the setup path needs to be duplicated in the teardown path. Rather than require each instance of for_each_device_pfn() to open code the same sequence, embed it in the helper. Link: https://github.com/intel/ixpdimm_sw/issues/11 Cc: "Jérôme Glisse" <jglisse@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <stable@vger.kernel.org> Fixes: 71389703 ("mm, zone_device: Replace {get, put}_zone_device_page()...") Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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Dave Jiang authored
Re-enable deep flush so that users always have a way to be sure that a write makes it all the way out to media. Writes from the PMEM driver always arrive at the NVDIMM since movnt is used to bypass the cache, and the driver relies on the ADR (Asynchronous DRAM Refresh) mechanism to flush write buffers on power failure. The Deep Flush mechanism is there to explicitly write buffers to protect against (rare) ADR failure. This change prevents a regression in deep flush behavior so that applications can continue to depend on fsync() as a mechanism to trigger deep flush in the filesystem-DAX case. Fixes: 06e8ccda ("acpi: nfit: Add support for detect platform CPU cache...") Reviewed-by:
Jeff Moyer <jmoyer@redhat.com> Signed-off-by:
Dave Jiang <dave.jiang@intel.com> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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Masahiro Yamada authored
I have recently picked up Kconfig patches to my tree without any declaration. Making it official now. Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Dan Williams authored
Filesystem-DAX is incompatible with 'longterm' page pinning. Without page cache indirection a DAX mapping maps filesystem blocks directly. This means that the filesystem must not modify a file's block map while any page in a mapping is pinned. In order to prevent the situation of userspace holding of filesystem operations indefinitely, disallow 'longterm' Filesystem-DAX mappings. RDMA has the same conflict and the plan there is to add a 'with lease' mechanism to allow the kernel to notify userspace that the mapping is being torn down for block-map maintenance. Perhaps something similar can be put in place for vfio. Note that xfs and ext4 still report: "DAX enabled. Warning: EXPERIMENTAL, use at your own risk" ...at mount time, and resolving the dax-dma-vs-truncate problem is one of the last hurdles to remove that designation. Acked-by:
Alex Williamson <alex.williamson@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> Reported-by:
Haozhong Zhang <haozhong.zhang@intel.com> Tested-by:
Haozhong Zhang <haozhong.zhang@intel.com> Fixes: d475c634 ("dax,ext2: replace XIP read and write with DAX I/O") Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull PCI fixes from Bjorn Helgaas: - Update pci.ids location (documentation only) (Randy Dunlap) - Fix a crash when BIOS didn't assign a BAR and we try to enlarge it (Christian König) * tag 'pci-v4.16-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: Allow release of resources that were never assigned PCI: Update location of pci.ids file
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc fixes from Helge Deller: - a patch to change the ordering of cache and TLB flushes to hopefully fix the random segfaults we very rarely face (by Dave Anglin). - a patch to hide the virtual kernel memory layout due to security reasons. - two small patches to make the kernel run more smoothly under qemu. * 'parisc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Reduce irq overhead when run in qemu parisc: Use cr16 interval timers unconditionally on qemu parisc: Check if secondary CPUs want own PDC calls parisc: Hide virtual kernel memory layout parisc: Fix ordering of cache and TLB flushes
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen fixes from Juergen Gross: "Five minor fixes for Xen-specific drivers" * tag 'for-linus-4.16a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: pvcalls-front: 64-bit align flags x86/xen: add tty0 and hvc0 as preferred consoles for dom0 xen-netfront: Fix hang on device removal xen/pirq: fix error path cleanup when binding MSIs xen/pvcalls: fix null pointer dereference on map->sock
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git://github.com/ceph/ceph-clientLinus Torvalds authored
Pull ceph fixes from Ilya Dryomov: "A cap handling fix from Zhi that ensures that metadata writeback isn't delayed and three error path memory leak fixups from Chengguang" * tag 'ceph-for-4.16-rc4' of git://github.com/ceph/ceph-client: ceph: fix potential memory leak in init_caches() ceph: fix dentry leak when failing to init debugfs libceph, ceph: avoid memory leak when specifying same option several times ceph: flush dirty caps of unlinked inode ASAP
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: "A collection of fixes for this series. This is a little larger than usual at this time, but that's mainly because I was out on vacation last week. Nothing in here is major in any way, it's just two weeks of fixes. This contains: - NVMe pull from Keith, with a set of fixes from the usual suspects. - mq-deadline zone unlock fix from Damien, fixing an issue with the SMR zone locking added for 4.16. - two bcache fixes sent in by Michael, with changes from Coly and Tang. - comment typo fix from Eric for blktrace. - return-value error handling fix for nbd, from Gustavo. - fix a direct-io case where we don't defer to a completion handler, making us sleep from IRQ device completion. From Jan. - a small series from Jan fixing up holes around handling of bdev references. - small set of regression fixes from Jiufei, mostly fixing problems around the gendisk pointer -> partition index change. - regression fix from Ming, fixing a boundary issue with the discard page cache invalidation. - two-patch series from Ming, fixing both a core blk-mq-sched and kyber issue around token freeing on a requeue condition" * tag 'for-linus-20180302' of git://git.kernel.dk/linux-block: (24 commits) block: fix a typo block: display the correct diskname for bio block: fix the count of PGPGOUT for WRITE_SAME mq-deadline: Make sure to always unlock zones nvmet: fix PSDT field check in command format nvme-multipath: fix sysfs dangerously created links nbd: fix return value in error handling path bcache: fix kcrashes with fio in RAID5 backend dev bcache: correct flash only vols (check all uuids) blktrace_api.h: fix comment for struct blk_user_trace_setup blockdev: Avoid two active bdev inodes for one device genhd: Fix BUG in blkdev_open() genhd: Fix use after free in __blkdev_get() genhd: Add helper put_disk_and_module() genhd: Rename get_disk() to get_disk_and_module() genhd: Fix leaked module reference for NVME devices direct-io: Fix sleep in atomic due to sync AIO nvme-pci: Fix nvme queue cleanup if IRQ setup fails block: kyber: fix domain token leak during requeue blk-mq: don't call io sched's .requeue_request when requeueing rq to ->dispatch ...
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmcLinus Torvalds authored
Pull MMC fixes from Ulf Hansson: "MMC core: - mmc: core: Avoid hang when claiming host MMC host: - dw_mmc: Avoid hang when accessing registers - dw_mmc: Fix out-of-bounds access for slot's caps - dw_mmc-k3: Fix out-of-bounds access through DT alias - sdhci-pci: Fix S0i3 for Intel BYT-based controllers" * tag 'mmc-v4.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: core: Avoid hanging to claim host for mmc via some nested calls mmc: dw_mmc: Avoid accessing registers in runtime suspended state mmc: dw_mmc: Fix out-of-bounds access for slot's caps mmc: dw_mmc: Factor out dw_mci_init_slot_caps mmc: dw_mmc-k3: Fix out-of-bounds access through DT alias mmc: sdhci-pci: Fix S0i3 for Intel BYT-based controllers
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fixes from Rafael Wysocki: "These fix three issues in cpufreq drivers: one recent regression, one leftover Kconfig dependency and one old but "stable" material. Specifics: - Make the task scheduler load and utilization signals be frequency-invariant again after recent changes in the SCPI cpufreq driver (Dietmar Eggemann). - Drop an unnecessary leftover Kconfig dependency from the SCPI cpufreq driver (Sudeep Holla). - Fix the initialization of the s3c24xx cpufreq driver (Viresh Kumar)" * tag 'pm-4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: s3c24xx: Fix broken s3c_cpufreq_init() cpufreq: scpi: Fix incorrect arm_big_little config dependency cpufreq: scpi: invoke frequency-invariance setter function
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- Mar 02, 2018
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Masahiro Yamada authored
When recursive inclusion is detected, the line number of the last 'included from:' is wrong. [Test Case] Kconfig: -------->8-------- source "Kconfig2" -------->8-------- Kconfig2: -------->8-------- source "Kconfig3" -------->8-------- Kconfig3: -------->8-------- source "Kconfig" -------->8-------- [Result] $ make allyesconfig scripts/kconfig/conf --allyesconfig Kconfig Kconfig:1: recursive inclusion detected. Inclusion path: current file : 'Kconfig' included from: 'Kconfig3:1' included from: 'Kconfig2:1' included from: 'Kconfig:3' scripts/kconfig/Makefile:89: recipe for target 'allyesconfig' failed make[1]: *** [allyesconfig] Error 1 Makefile:512: recipe for target 'allyesconfig' failed make: *** [allyesconfig] Error 2 where we expect current file : 'Kconfig' included from: 'Kconfig3:1' included from: 'Kconfig2:1' included from: 'Kconfig:1' The 'iter->lineno+1' in the second fpinrtf() should be 'iter->lineno-1'. I refactored the code to merge the two fprintf() calls. Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by:
Ulf Magnusson <ulfalizer@gmail.com>
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Dafna Hirschfeld authored
Replace 'kmemdep' with 'kmemdup' in warning messages. Signed-off-by:
Dafna Hirschfeld <dafna3@gmail.com> Acked-by:
Julia Lawall <julia.lawall@lip6.fr> Acked-by:
Nicolas Palix <nicolas.palix@imag.fr> Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com>
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Jan Glauber authored
The error message: [Fri Feb 16 13:42:13 2018] i2c-thunderx 0000:01:09.4: unhandled state: 0 is mis-leading as state 0 (bus error) is not an unknown state. Return -EIO as before but avoid printing the message. Also rename STAT_ERROR to STATE_BUS_ERROR. Signed-off-by:
Jan Glauber <jglauber@cavium.com> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de>
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Wolfram Sang authored
Merge tag 'at24-4.16-rc4-for-wolfram' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-current Pull in this fixup to get rid of a dependency for the next cycle: "- sort the manufacturers in DT bindings alphabetically"
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Rafael J. Wysocki authored
* cpufreq-scpi: cpufreq: scpi: Fix incorrect arm_big_little config dependency cpufreq: scpi: invoke frequency-invariance setter function
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Helge Deller authored
When run under QEMU, calling mfctl(16) creates some overhead because the qemu timer has to be scaled and moved into the register. This patch reduces the number of calls to mfctl(16) by moving the calls out of the loops. Additionally, increase the minimal time interval to 8000 cycles instead of 500 to compensate possible QEMU delays when delivering interrupts. Signed-off-by:
Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # 4.14+
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Helge Deller authored
When running on qemu we know that the (emulated) cr16 cpu-internal clocks are syncronized. So let's use them unconditionally on qemu. Signed-off-by:
Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # 4.14+
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Helge Deller authored
The architecture specification says (for 64-bit systems): PDC is a per processor resource, and operating system software must be prepared to manage separate pointers to PDCE_PROC for each processor. The address of PDCE_PROC for the monarch processor is stored in the Page Zero location MEM_PDC. The address of PDCE_PROC for each non-monarch processor is passed in gr26 when PDCE_RESET invokes OS_RENDEZ. Currently we still use one PDC for all CPUs, but in case we face a machine which is following the specification let's warn about it. Signed-off-by:
Helge Deller <deller@gmx.de>
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Helge Deller authored
For security reasons do not expose the virtual kernel memory layout to userspace. Signed-off-by:
Helge Deller <deller@gmx.de> Suggested-by:
Kees Cook <keescook@chromium.org> Cc: stable@vger.kernel.org # 4.15 Reviewed-by:
Kees Cook <keescook@chromium.org>
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John David Anglin authored
The change to flush_kernel_vmap_range() wasn't sufficient to avoid the SMP stalls. The problem is some drivers call these routines with interrupts disabled. Interrupts need to be enabled for flush_tlb_all() and flush_cache_all() to work. This version adds checks to ensure interrupts are not disabled before calling routines that need IPI interrupts. When interrupts are disabled, we now drop into slower code. The attached change fixes the ordering of cache and TLB flushes in several cases. When we flush the cache using the existing PTE/TLB entries, we need to flush the TLB after doing the cache flush. We don't need to do this when we flush the entire instruction and data caches as these flushes don't use the existing TLB entries. The same is true for tmpalias region flushes. The flush_kernel_vmap_range() and invalidate_kernel_vmap_range() routines have been updated. Secondly, we added a new purge_kernel_dcache_range_asm() routine to pacache.S and use it in invalidate_kernel_vmap_range(). Nominally, purges are faster than flushes as the cache lines don't have to be written back to memory. Hopefully, this is sufficient to resolve the remaining problems due to cache speculation. So far, testing indicates that this is the case. I did work up a patch using tmpalias flushes, but there is a performance hit because we need the physical address for each page, and we also need to sequence access to the tmpalias flush code. This increases the probability of stalls. Signed-off-by:
John David <Anglin <dave.anglin@bell.net> Cc: stable@vger.kernel.org # 4.9+ Signed-off-by:
Helge Deller <deller@gmx.de>
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Arvind Prasanna authored
The package name is ncurses-devel for Redhat based distros and libncurses-dev for Debian based distros. Signed-off-by:
Arvind Prasanna <arvindprasanna@gmail.com> Acked-by:
Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com>
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