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2015-11-07arm64: fixup for mm renamesAndrew Morton1-1/+1
__GFP_WAIT was renamed for __GFP_RECLAIM and the gfpflags_allow_blocking() helper was added. Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-07Merge branch 'akpm' (patches from Andrew)Linus Torvalds8-14/+12
Merge second patch-bomb from Andrew Morton: - most of the rest of MM - procfs - lib/ updates - printk updates - bitops infrastructure tweaks - checkpatch updates - nilfs2 update - signals - various other misc bits: coredump, seqfile, kexec, pidns, zlib, ipc, dma-debug, dma-mapping, ... * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (102 commits) ipc,msg: drop dst nil validation in copy_msg include/linux/zutil.h: fix usage example of zlib_adler32() panic: release stale console lock to always get the logbuf printed out dma-debug: check nents in dma_sync_sg* dma-mapping: tidy up dma_parms default handling pidns: fix set/getpriority and ioprio_set/get in PRIO_USER mode kexec: use file name as the output message prefix fs, seqfile: always allow oom killer seq_file: reuse string_escape_str() fs/seq_file: use seq_* helpers in seq_hex_dump() coredump: change zap_threads() and zap_process() to use for_each_thread() coredump: ensure all coredumping tasks have SIGNAL_GROUP_COREDUMP signal: remove jffs2_garbage_collect_thread()->allow_signal(SIGCONT) signal: introduce kernel_signal_stop() to fix jffs2_garbage_collect_thread() signal: turn dequeue_signal_lock() into kernel_dequeue_signal() signals: kill block_all_signals() and unblock_all_signals() nilfs2: fix gcc uninitialized-variable warnings in powerpc build nilfs2: fix gcc unused-but-set-variable warnings MAINTAINERS: nilfs2: add header file for tracing nilfs2: add tracepoints for analyzing reading and writing metadata files ...
2015-11-07Merge branch 'for-linus' of ↵Linus Torvalds1-4/+5
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching Pull livepatching fix from Jiri Kosina: "A fix for a kernel oops in case CONFIG_DEBUG_SET_MODULE_RONX is unset (as in such case it's possible for module struct to share a page with executable text, which is currently not being handled with grace) from Josh Poimboeuf" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching: livepatch: Fix crash with !CONFIG_DEBUG_SET_MODULE_RONX
2015-11-06arch/x86/kernel/cpu/perf_event_msr.c: use sign_extend64() for sign extensionMartin Kepplinger1-4/+3
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: George Spelvin <linux@horizon.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Maxime Coquelin <maxime.coquelin@st.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Yury Norov <yury.norov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-06arch/sh/kernel/traps_64.c: use sign_extend64() for sign extensionMartin Kepplinger2-2/+2
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: George Spelvin <linux@horizon.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Maxime Coquelin <maxime.coquelin@st.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Yury Norov <yury.norov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-06mm: make compound_head() robustKirill A. Shutemov1-1/+0
Hugh has pointed that compound_head() call can be unsafe in some context. There's one example: CPU0 CPU1 isolate_migratepages_block() page_count() compound_head() !!PageTail() == true put_page() tail->first_page = NULL head = tail->first_page alloc_pages(__GFP_COMP) prep_compound_page() tail->first_page = head __SetPageTail(p); !!PageTail() == true <head == NULL dereferencing> The race is pure theoretical. I don't it's possible to trigger it in practice. But who knows. We can fix the race by changing how encode PageTail() and compound_head() within struct page to be able to update them in one shot. The patch introduces page->compound_head into third double word block in front of compound_dtor and compound_order. Bit 0 encodes PageTail() and the rest bits are pointer to head page if bit zero is set. The patch moves page->pmd_huge_pte out of word, just in case if an architecture defines pgtable_t into something what can have the bit 0 set. hugetlb_cgroup uses page->lru.next in the second tail page to store pointer struct hugetlb_cgroup. The patch switch it to use page->private in the second tail page instead. The space is free since ->first_page is removed from the union. The patch also opens possibility to remove HUGETLB_CGROUP_MIN_ORDER limitation, since there's now space in first tail page to store struct hugetlb_cgroup pointer. But that's out of scope of the patch. That means page->compound_head shares storage space with: - page->lru.next; - page->next; - page->rcu_head.next; That's too long list to be absolutely sure, but looks like nobody uses bit 0 of the word. page->rcu_head.next guaranteed[1] to have bit 0 clean as long as we use call_rcu(), call_rcu_bh(), call_rcu_sched(), or call_srcu(). But future call_rcu_lazy() is not allowed as it makes use of the bit and we can get false positive PageTail(). [1] http://lkml.kernel.org/g/20150827163634.GD4029@linux.vnet.ibm.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Lameter <cl@linux.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-06mm, page_alloc: distinguish between being unable to sleep, unwilling to ↵Mel Gorman4-7/+7
sleep and avoiding waking kswapd __GFP_WAIT has been used to identify atomic context in callers that hold spinlocks or are in interrupts. They are expected to be high priority and have access one of two watermarks lower than "min" which can be referred to as the "atomic reserve". __GFP_HIGH users get access to the first lower watermark and can be called the "high priority reserve". Over time, callers had a requirement to not block when fallback options were available. Some have abused __GFP_WAIT leading to a situation where an optimisitic allocation with a fallback option can access atomic reserves. This patch uses __GFP_ATOMIC to identify callers that are truely atomic, cannot sleep and have no alternative. High priority users continue to use __GFP_HIGH. __GFP_DIRECT_RECLAIM identifies callers that can sleep and are willing to enter direct reclaim. __GFP_KSWAPD_RECLAIM to identify callers that want to wake kswapd for background reclaim. __GFP_WAIT is redefined as a caller that is willing to enter direct reclaim and wake kswapd for background reclaim. This patch then converts a number of sites o __GFP_ATOMIC is used by callers that are high priority and have memory pools for those requests. GFP_ATOMIC uses this flag. o Callers that have a limited mempool to guarantee forward progress clear __GFP_DIRECT_RECLAIM but keep __GFP_KSWAPD_RECLAIM. bio allocations fall into this category where kswapd will still be woken but atomic reserves are not used as there is a one-entry mempool to guarantee progress. o Callers that are checking if they are non-blocking should use the helper gfpflags_allow_blocking() where possible. This is because checking for __GFP_WAIT as was done historically now can trigger false positives. Some exceptions like dm-crypt.c exist where the code intent is clearer if __GFP_DIRECT_RECLAIM is used instead of the helper due to flag manipulations. o Callers that built their own GFP flags instead of starting with GFP_KERNEL and friends now also need to specify __GFP_KSWAPD_RECLAIM. The first key hazard to watch out for is callers that removed __GFP_WAIT and was depending on access to atomic reserves for inconspicuous reasons. In some cases it may be appropriate for them to use __GFP_HIGH. The second key hazard is callers that assembled their own combination of GFP flags instead of starting with something like GFP_KERNEL. They may now wish to specify __GFP_KSWAPD_RECLAIM. It's almost certainly harmless if it's missed in most cases as other activity will wake kswapd. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Vitaly Wool <vitalywool@gmail.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-06Merge tag 'trace-v4.4' of ↵Linus Torvalds1-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracking updates from Steven Rostedt: "Most of the changes are clean ups and small fixes. Some of them have stable tags to them. I searched through my INBOX just as the merge window opened and found lots of patches to pull. I ran them through all my tests and they were in linux-next for a few days. Features added this release: ---------------------------- - Module globbing. You can now filter function tracing to several modules. # echo '*:mod:*snd*' > set_ftrace_filter (Dmitry Safonov) - Tracer specific options are now visible even when the tracer is not active. It was rather annoying that you can only see and modify tracer options after enabling the tracer. Now they are in the options/ directory even when the tracer is not active. Although they are still only visible when the tracer is active in the trace_options file. - Trace options are now per instance (although some of the tracer specific options are global) - New tracefs file: set_event_pid. If any pid is added to this file, then all events in the instance will filter out events that are not part of this pid. sched_switch and sched_wakeup events handle next and the wakee pids" * tag 'trace-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (68 commits) tracefs: Fix refcount imbalance in start_creating() tracing: Put back comma for empty fields in boot string parsing tracing: Apply tracer specific options from kernel command line. tracing: Add some documentation about set_event_pid ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark tracing: Allow dumping traces without tracking trace started cpus ring_buffer: Fix more races when terminating the producer in the benchmark ring_buffer: Do no not complete benchmark reader too early tracing: Remove redundant TP_ARGS redefining tracing: Rename max_stack_lock to stack_trace_max_lock tracing: Allow arch-specific stack tracer recordmcount: arm64: Replace the ignored mcount call into nop recordmcount: Fix endianness handling bug for nop_mcount tracepoints: Fix documentation of RCU lockdep checks tracing: ftrace_event_is_function() can return boolean tracing: is_legal_op() can return boolean ring-buffer: rb_event_is_commit() can return boolean ring-buffer: rb_per_cpu_empty() can return boolean ring_buffer: ring_buffer_empty{cpu}() can return boolean ring-buffer: rb_is_reader_page() can return boolean ...
2015-11-06Merge tag 'for-v4.4-important-fix' of ↵Linus Torvalds1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply Pull power supply fix from Sebastian Reichel: "Just a single revert for a patch, that I should not have queued. Detailed description is inside the patch. It's totally my fault, that this happened, sorry about that :(" * tag 'for-v4.4-important-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: Revert "ARM: dts: twl4030: Add iio properties for bci subnode"
2015-11-06Revert "ARM: dts: twl4030: Add iio properties for bci subnode"Sebastian Reichel1-2/+0
This reverts commit af19161aaed7ff8d1a52b2e517460f2fa0774e32, which breaks the omap3 device tree build due to a wrong reference. I accidently queued this change via the power supply subsystem while telling Marek at the same time, that it should go through Tony. Following that I did miss Stephen's messages about the build failure in linux-next and since he switched to merging an older snapshot nobody else noticed the problem in my tree. I didn't notice myself, since I did not build any device tree files assuming none have changed by me. Signed-off-by: Sebastian Reichel <sre@kernel.org> Reported-by: Felipe Balbi <balbi@ti.com> Tested-by: Felipe Balbi <balbi@ti.com> Acked-by: Felipe Balbi <balbi@ti.com> Tested-by: Kevin Hilman <khilman@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com>
2015-11-06Merge tag 'devicetree-for-4.4' of ↵Linus Torvalds10-9/+34
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree updates from Rob Herring: "A fairly large (by DT standards) pull request this time with the majority being some overdue moving DT binding docs around to consolidate similar bindings. - DT binding doc consolidation moving similar bindings to common locations. The majority of these are display related which were scattered in video/, fb/, drm/, gpu/, and panel/ directories. - Add new config option, CONFIG_OF_ALL_DTBS, to enable building all dtbs in the tree for most arches with dts files (except powerpc for now). - OF_IRQ=n fixes for user enabled CONFIG_OF. - of_node_put ref counting fixes from Julia Lawall. - Common DT binding for wakeup-source and deprecation of all similar bindings. - DT binding for PXA LCD controller. - Allow ignoring failed PCI resource translations in order to ignore 64-bit addresses on non-LPAE 32-bit kernels. - Support setting the NUMA node from DT instead of only from parent device. - Couple of earlycon DT parsing fixes for address and options" * tag 'devicetree-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (45 commits) MAINTAINERS: update DT binding doc locations devicetree: add Sigma Designs vendor prefix of: simplify arch_find_n_match_cpu_physical_id() function Documentation: arm: Fixed typo in socfpga fpga mgr example Documentation: devicetree: fix reference to legacy wakeup properties Documentation: devicetree: standardize/consolidate on "wakeup-source" property drivers: of: removing assignment of 0 to static variable xtensa: enable building of all dtbs mips: enable building of all dtbs metag: enable building of all dtbs metag: use common make variables for dtb builds h8300: enable building of all dtbs arm64: enable building of all dtbs arm: enable building of all dtbs arc: enable building of all dtbs arc: use common make variables for dtb builds of: add config option to enable building of all dtbs of/fdt: fix error checking for earlycon address of/overlay: add missing of_node_put of/platform: add missing of_node_put ...
2015-11-06Merge branch 'for-linus' of ↵Linus Torvalds4-4/+7
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input updates from Dmitry Torokhov: "Items of note: - evdev users can now limit or mask the kind of events they will receive. This will allow applications such as power manager or network manager to only be woken when user presses special keys such as KEY_POWER or KEY_WIFI and not be bothered with ordinary key presses coming from keyboard - support for FocalTech FT6236 touchscreen controller - support for ROHM BU21023/24 touchscreen controller - edt-ft5x06 touchscreen driver got a face lift and can now be used with FT5506 - support for Google Fiber TV Box remote controls - improvements in xpad driver (with more to come) - several parport-based drivers have been switched to the new device model - other miscellaneous driver improvements" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (70 commits) HID: hid-gfrm: avoid warning for input_configured API change HID: hid-input: allow input_configured callback return errors Input: evdev - fix bug in checking duplicate clock change request Input: add userio module Input: evdev - add event-mask API Input: snvs_pwrkey - remove duplicated semicolon HID: hid-gfrm: Google Fiber TV Box remote controls Input: e3x0-button - update Kconfig description Input: tegra-kbc - drop use of IRQF_NO_SUSPEND flag Input: tegra-kbc - enable support for the standard "wakeup-source" property Input: xen - check return value of xenbus_printf Input: hp_sdc_rtc - fix y2038 problem in proc_show Input: nomadik-ske-keypad - fix a trivial typo Input: xpad - fix clash of presence handling with LED setting Input: edt-ft5x06 - work around FT5506 firmware bug Input: edt-ft5x06 - add support for FT5506 Input: edt-ft5x06 - add support for different max support points Input: edt-ft5x06 - use max support points to determine how much to read Input: rotary-encoder - add support for quarter-period mode Input: rotary-encoder - use of_property_read_bool ...
2015-11-06Merge tag 'for-linus-20151106' of git://git.infradead.org/linux-mtdLinus Torvalds1-3/+0
Pull MTD updates from Brian Norris: "Core: - WARN (in some cases) when a struct mtd_info is registered multiple times; in the past this was "supported", but it's still error prone for future development. There's only one ugly case of this left in the tree (that we're aware of) and the owners are aware of the problems there. - fix potential deadlock in the blkdev removal path NOTE: the (potential) deadlock was introduced in a for-stable patch. This one is also marked for -stable. - ioctl(BLKPG) compat_ioctl support; resolves issues with 32-bit user space vs 64-bit kernel space - Set MTD parent device correctly throughout the tree, so the tree structure appears correctly in sysfs; many drivers were missing this (soft) requirement - Move device tree partitions (ofpart) into a dedicated 'partitions' subnode; this helps to disambiguate whether a node is a partition or some other auxiliary data - Improve error handling for partitioning failures NAND: - General: Increase timeout period, for corner-case systems with less-than-accurate jiffies - Fix OF-based autoloading of several NAND drivers when built as modules - pxa3xx_nand: - Rework timing configuration to be more dynamic - Refactor PM support - brcmnand: prepare for NorthStar 2 support (ARM64, 16-bit NAND chips) - sunxi_nand: refactoring and a few bug fixes - vf610: new NAND driver - FSMC: add SW BCH support; support common NAND DT bindings - lpc32xx_slc: refactor and improve timing calculations logic - denali: support for rev 5.1 SPI NOR: - Layering improvements - Added Winbond lock/unlock support - Added mtd_is_locked() (i.e., ioctl(MEMISLOCKED)) support - Increase full-chip-erase timeout linearly with flash size - fsl-quadspi: fix compile for non-ARM architectures - New flash support" * tag 'for-linus-20151106' of git://git.infradead.org/linux-mtd: (169 commits) mtd: don't WARN about overloaded users of mtd->reboot_notifier.notifier_call mtd: nand: sunxi: avoid retrieving data before ECC pass mtd: nand: sunxi: fix sunxi_nfc_hw_ecc_read/write_chunk() mtd: blkdevs: fix potential deadlock + lockdep warnings mtd: ofpart: move ofpart partitions to a dedicated dt node doc: dt: mtd: support partitions in a special 'partitions' subnode mtd: brcmnand: Force 8bit mode before doing nand_scan_ident() mtd: brcmnand: factor out CFG and CFG_EXT bitfields mtd: mtdpart: Do not fail mtd probe when parsing partitions fails mtd: fsl-quadspi: fix macro collision problems with READ/WRITE mtd: warn when registering the same master many times mtd: fixup corner case error handling in mtd_device_parse_register() mtd: tests: Replace timeval with ktime_t mtd: fsmc_nand: Add BCH4 SW ECC support for SPEAr600 mtd: nand: vf610_nfc: use nand_check_erased_ecc_chunk() helper mtd: nand: increase ready wait timeout and report timeouts mtd: docg3: off by one in doc_register_sysfs() mtd: pxa3xx_nand: clean up the pxa3xx timings mtd: pxa3xx_nand: rework flash detection and timing setup mtd: pxa3xx_nand: add helpers to setup the timings ...
2015-11-06Merge tag 'pci-v4.4-changes' of ↵Linus Torvalds10-27/+42
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Resource management: - Add support for Enhanced Allocation devices (Sean O. Stalley) - Add Enhanced Allocation register entries (Sean O. Stalley) - Handle IORESOURCE_PCI_FIXED when sizing resources (David Daney) - Handle IORESOURCE_PCI_FIXED when assigning resources (David Daney) - Handle Enhanced Allocation capability for SR-IOV devices (David Daney) - Clear IORESOURCE_UNSET when reverting to firmware-assigned address (Bjorn Helgaas) - Make Enhanced Allocation bitmasks more obvious (Bjorn Helgaas) - Expand Enhanced Allocation BAR output (Bjorn Helgaas) - Add of_pci_check_probe_only to parse "linux,pci-probe-only" (Marc Zyngier) - Fix lookup of linux,pci-probe-only property (Marc Zyngier) - Add sparc mem64 resource parsing for root bus (Yinghai Lu) PCI device hotplug: - pciehp: Queue power work requests in dedicated function (Guenter Roeck) Driver binding: - Add builtin_pci_driver() to avoid registration boilerplate (Paul Gortmaker) Virtualization: - Set SR-IOV NumVFs to zero after enumeration (Alexander Duyck) - Remove redundant validation of SR-IOV offset/stride registers (Alexander Duyck) - Remove VFs in reverse order if virtfn_add() fails (Alexander Duyck) - Reorder pcibios_sriov_disable() (Alexander Duyck) - Wait 1 second between disabling VFs and clearing NumVFs (Alexander Duyck) - Fix sriov_enable() error path for pcibios_enable_sriov() failures (Alexander Duyck) - Enable SR-IOV ARI Capable Hierarchy before reading TotalVFs (Ben Shelton) - Don't try to restore VF BARs (Wei Yang) MSI: - Don't alloc pcibios-irq when MSI is enabled (Joerg Roedel) - Add msi_controller setup_irqs() method for special multivector setup (Lucas Stach) - Export all remapped MSIs to sysfs attributes (Romain Bezut) - Disable MSI on SiS 761 (Ondrej Zary) AER: - Clear error status registers during enumeration and restore (Taku Izumi) Generic host bridge driver: - Fix lookup of linux,pci-probe-only property (Marc Zyngier) - Allow multiple hosts with different map_bus() methods (David Daney) - Pass starting bus number to pci_scan_root_bus() (David Daney) - Fix address window calculation for non-zero starting bus (David Daney) Altera host bridge driver: - Add msi.h to ARM Kbuild (Ley Foon Tan) - Add Altera PCIe host controller driver (Ley Foon Tan) - Add Altera PCIe MSI driver (Ley Foon Tan) APM X-Gene host bridge driver: - Remove msi_controller assignment (Duc Dang) Broadcom iProc host bridge driver: - Fix header comment "Corporation" misspelling (Florian Fainelli) - Fix code comment to match code (Ray Jui) - Remove unused struct iproc_pcie.irqs[] (Ray Jui) - Call pci_fixup_irqs() for ARM64 as well as ARM (Ray Jui) - Fix PCIe reset logic (Ray Jui) - Improve link detection logic (Ray Jui) - Update PCIe device tree bindings (Ray Jui) - Add outbound mapping support (Ray Jui) Freescale i.MX6 host bridge driver: - Return real error code from imx6_add_pcie_port() (Fabio Estevam) - Add PCIE_PHY_RX_ASIC_OUT_VALID definition (Fabio Estevam) Freescale Layerscape host bridge driver: - Remove ls_pcie_establish_link() (Minghuan Lian) - Ignore PCIe controllers in Endpoint mode (Minghuan Lian) - Factor out SCFG related function (Minghuan Lian) - Update ls_add_pcie_port() (Minghuan Lian) - Remove unused fields from struct ls_pcie (Minghuan Lian) - Add support for LS1043a and LS2080a (Minghuan Lian) - Add ls_pcie_msi_host_init() (Minghuan Lian) HiSilicon host bridge driver: - Add HiSilicon SoC Hip05 PCIe driver (Zhou Wang) Marvell MVEBU host bridge driver: - Return zero for reserved or unimplemented config space (Russell King) - Use exact config access size; don't read/modify/write (Russell King) - Use of_get_available_child_count() (Russell King) - Use for_each_available_child_of_node() to walk child nodes (Russell King) - Report full node name when reporting a DT error (Russell King) - Use port->name rather than "PCIe%d.%d" (Russell King) - Move port parsing and resource claiming to separate function (Russell King) - Fix memory leaks and refcount leaks (Russell King) - Split port parsing and resource claiming from port setup (Russell King) - Use gpio_set_value_cansleep() (Russell King) - Use devm_kcalloc() to allocate an array (Russell King) - Use gpio_desc to carry around gpio (Russell King) - Improve clock/reset handling (Russell King) - Add PCI Express root complex capability block (Russell King) - Remove code restricting accesses to slot 0 (Russell King) NVIDIA Tegra host bridge driver: - Wrap static pgprot_t initializer with __pgprot() (Ard Biesheuvel) Renesas R-Car host bridge driver: - Build pci-rcar-gen2.c only on ARM (Geert Uytterhoeven) - Build pcie-rcar.c only on ARM (Geert Uytterhoeven) - Make PCI aware of the I/O resources (Phil Edworthy) - Remove dependency on ARM-specific struct hw_pci (Phil Edworthy) - Set root bus nr to that provided in DT (Phil Edworthy) - Fix I/O offset for multiple host bridges (Phil Edworthy) ST Microelectronics SPEAr13xx host bridge driver: - Fix dw_pcie_cfg_read/write() usage (Gabriele Paoloni) Synopsys DesignWare host bridge driver: - Make "clocks" and "clock-names" optional DT properties (Bhupesh Sharma) - Use exact access size in dw_pcie_cfg_read() (Gabriele Paoloni) - Simplify dw_pcie_cfg_read/write() interfaces (Gabriele Paoloni) - Require config accesses to be naturally aligned (Gabriele Paoloni) - Make "num-lanes" an optional DT property (Gabriele Paoloni) - Move calculation of bus addresses to DRA7xx (Gabriele Paoloni) - Replace ARM pci_sys_data->align_resource with global function pointer (Gabriele Paoloni) - Factor out MSI msg setup (Lucas Stach) - Implement multivector MSI IRQ setup (Lucas Stach) - Make get_msi_addr() return phys_addr_t, not u32 (Lucas Stach) - Set up high part of MSI target address (Lucas Stach) - Fix PORT_LOGIC_LINK_WIDTH_MASK (Zhou Wang) - Revert "PCI: designware: Program ATU with untranslated address" (Zhou Wang) - Use of_pci_get_host_bridge_resources() to parse DT (Zhou Wang) - Make driver arch-agnostic (Zhou Wang) Miscellaneous: - Make x86 pci_subsys_init() static (Alexander Kuleshov) - Turn off Request Attributes to avoid Chelsio T5 Completion erratum (Hariprasad Shenai)" * tag 'pci-v4.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (94 commits) PCI: altera: Add Altera PCIe MSI driver PCI: hisi: Add HiSilicon SoC Hip05 PCIe driver PCI: layerscape: Add ls_pcie_msi_host_init() PCI: layerscape: Add support for LS1043a and LS2080a PCI: layerscape: Remove unused fields from struct ls_pcie PCI: layerscape: Update ls_add_pcie_port() PCI: layerscape: Factor out SCFG related function PCI: layerscape: Ignore PCIe controllers in Endpoint mode PCI: layerscape: Remove ls_pcie_establish_link() PCI: designware: Make "clocks" and "clock-names" optional DT properties PCI: designware: Make driver arch-agnostic ARM/PCI: Replace pci_sys_data->align_resource with global function pointer PCI: designware: Use of_pci_get_host_bridge_resources() to parse DT Revert "PCI: designware: Program ATU with untranslated address" PCI: designware: Move calculation of bus addresses to DRA7xx PCI: designware: Make "num-lanes" an optional DT property PCI: designware: Require config accesses to be naturally aligned PCI: designware: Simplify dw_pcie_cfg_read/write() interfaces PCI: designware: Use exact access size in dw_pcie_cfg_read() PCI: spear: Fix dw_pcie_cfg_read/write() usage ...
2015-11-06x86: don't make DEBUG_WX default to 'y' even with DEBUG_RODATALinus Torvalds1-1/+0
It turns out that we still have issues with the EFI memory map that ends up polluting our kernel page tables with writable executable pages. That will get sorted out, but in the meantime let's not make the scary complaint about them be on by default. The code is useful for developers, but not ready for end user testing yet. Acked-by: Borislav Petkov <bp@alien8.de> Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-06livepatch: Fix crash with !CONFIG_DEBUG_SET_MODULE_RONXJosh Poimboeuf1-4/+5
When loading a patch module on a kernel with !CONFIG_DEBUG_SET_MODULE_RONX, the following crash occurs: [ 205.988776] livepatch: enabling patch 'kpatch_meminfo_string' [ 205.989829] BUG: unable to handle kernel paging request at ffffffffa08d2fc0 [ 205.989863] IP: [<ffffffff8154fecb>] do_init_module+0x8c/0x1ba [ 205.989888] PGD 1a10067 PUD 1a11063 PMD 7bcde067 PTE 3740e161 [ 205.989915] Oops: 0003 [#1] SMP [ 205.990187] CPU: 2 PID: 14570 Comm: insmod Tainted: G O K 4.1.12 [ 205.990214] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150318_183358- 04/01/2014 [ 205.990249] task: ffff8800374aaa90 ti: ffff8800794b8000 task.ti: ffff8800794b8000 [ 205.990276] RIP: 0010:[<ffffffff8154fecb>] [<ffffffff8154fecb>] do_init_module+0x8c/0x1ba [ 205.990307] RSP: 0018:ffff8800794bbd58 EFLAGS: 00010246 [ 205.990327] RAX: 0000000000000000 RBX: ffffffffa08d2fc0 RCX: 0000000000000000 [ 205.990356] RDX: 01ffff8000000080 RSI: 0000000000000000 RDI: ffffffff81a54b40 [ 205.990382] RBP: ffff88007b4c4d80 R08: 0000000000000007 R09: 0000000000000000 [ 205.990408] R10: 0000000000000008 R11: ffffea0001f18840 R12: 0000000000000000 [ 205.990433] R13: 0000000000000001 R14: ffffffffa08d2fc0 R15: ffff88007bd0bc40 [ 205.990459] FS: 00007f1128fbc700(0000) GS:ffff88007fc80000(0000) knlGS:0000000000000000 [ 205.990488] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 205.990509] CR2: ffffffffa08d2fc0 CR3: 000000002606e000 CR4: 00000000001406e0 [ 205.990536] Stack: [ 205.990545] ffff8800794bbec8 0000000000000001 ffffffffa08d3010 ffffffff810ecea9 [ 205.990576] ffffffff810e8e40 000000000005f360 ffff88007bd0bc50 ffffffffa08d3240 [ 205.990608] ffffffffa08d52c0 ffffffffa08d3210 ffff8800794bbed8 ffff8800794bbf1c [ 205.990639] Call Trace: [ 205.990651] [<ffffffff810ecea9>] ? load_module+0x1e59/0x23a0 [ 205.990672] [<ffffffff810e8e40>] ? store_uevent+0x40/0x40 [ 205.990693] [<ffffffff810e99b5>] ? copy_module_from_fd.isra.49+0xb5/0x140 [ 205.990718] [<ffffffff810ed5bd>] ? SyS_finit_module+0x7d/0xa0 [ 205.990741] [<ffffffff81556832>] ? system_call_fastpath+0x16/0x75 [ 205.990763] Code: f9 00 00 00 74 23 49 c7 c0 92 e1 60 81 48 8d 53 18 89 c1 4c 89 c6 48 c7 c7 f0 85 7d 81 31 c0 e8 71 fa ff ff e8 58 0e 00 00 31 f6 <c7> 03 00 00 00 00 48 89 da 48 c7 c7 20 c7 a5 81 e8 d0 ec b3 ff [ 205.990916] RIP [<ffffffff8154fecb>] do_init_module+0x8c/0x1ba [ 205.990940] RSP <ffff8800794bbd58> [ 205.990953] CR2: ffffffffa08d2fc0 With !CONFIG_DEBUG_SET_MODULE_RONX, module text and rodata pages are writable, and the debug_align() macro allows the module struct to share a page with executable text. When klp_write_module_reloc() calls set_memory_ro() on the page, it effectively turns the module struct into a read-only structure, resulting in a page fault when load_module() does "mod->state = MODULE_STATE_LIVE". Reported-by: Cyril B. <cbay@alwaysdata.com> Tested-by: Cyril B. <cbay@alwaysdata.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-11-05Merge tag 'powerpc-4.4-1' of ↵Linus Torvalds262-1678/+5022
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Kconfig: remove BE-only platforms from LE kernel build from Boqun Feng - Refresh ps3_defconfig from Geoff Levand - Emit GNU & SysV hashes for the vdso from Michael Ellerman - Define an enum for the bolted SLB indexes from Anshuman Khandual - Use a local to avoid multiple calls to get_slb_shadow() from Michael Ellerman - Add gettimeofday() benchmark from Michael Neuling - Avoid link stack corruption in __get_datapage() from Michael Neuling - Add virt_to_pfn and use this instead of opencoding from Aneesh Kumar K.V - Add ppc64le_defconfig from Michael Ellerman - pseries: extract of_helpers module from Andy Shevchenko - Correct string length in pseries_of_derive_parent() from Nathan Fontenot - Free the MSI bitmap if it was slab allocated from Denis Kirjanov - Shorten irq_chip name for the SIU from Christophe Leroy - Wait 1s for secondaries to enter OPAL during kexec from Samuel Mendoza-Jonas - Fix _ALIGN_* errors due to type difference, from Aneesh Kumar K.V - powerpc/pseries/hvcserver: don't memset pi_buff if it is null from Colin Ian King - Disable hugepd for 64K page size, from Aneesh Kumar K.V - Differentiate between hugetlb and THP during page walk from Aneesh Kumar K.V - Make PCI non-optional for pseries from Michael Ellerman - Individual System V IPC system calls from Sam bobroff - Add selftest of unmuxed IPC calls from Michael Ellerman - discard .exit.data at runtime from Stephen Rothwell - Delete old orphaned PrPMC 280/2800 DTS and boot file, from Paul Gortmaker - Use of_get_next_parent to simplify code from Christophe Jaillet - Paginate some xmon output from Sam bobroff - Add some more elements to the xmon PACA dump from Michael Ellerman - Allow the tm-syscall selftest to build with old headers from Michael Ellerman - Run EBB selftests only on POWER8 from Denis Kirjanov - Drop CONFIG_TUNE_CELL in favour of CONFIG_CELL_CPU from Michael Ellerman - Avoid reference to potentially freed memory in prom.c from Christophe Jaillet - Quieten boot wrapper output with run_cmd from Geoff Levand - EEH fixes and cleanups from Gavin Shan - Fix recursive fenced PHB on Broadcom shiner adapter from Gavin Shan - Use of_get_next_parent() in of_get_ibm_chip_id() from Michael Ellerman - Fix section mismatch warning in msi_bitmap_alloc() from Denis Kirjanov - Fix ps3-lpm white space from Rudhresh Kumar J - Fix ps3-vuart null dereference from Colin King - nvram: Add missing kfree in error path from Christophe Jaillet - nvram: Fix function name in some errors messages, from Christophe Jaillet - drivers/macintosh: adb: fix misleading Kconfig help text from Aaro Koskinen - agp/uninorth: fix a memleak in create_gatt_table from Denis Kirjanov - cxl: Free virtual PHB when removing from Andrew Donnellan - scripts/kconfig/Makefile: Allow KBUILD_DEFCONFIG to be a target from Michael Ellerman - scripts/kconfig/Makefile: Fix KBUILD_DEFCONFIG check when building with O= from Michael Ellerman - Freescale updates from Scott: Highlights include 64-bit book3e kexec/kdump support, a rework of the qoriq clock driver, device tree changes including qoriq fman nodes, support for a new 85xx board, and some fixes. - MPC5xxx updates from Anatolij: Highlights include a driver for MPC512x LocalPlus Bus FIFO with its device tree binding documentation, mpc512x device tree updates and some minor fixes. * tag 'powerpc-4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (106 commits) powerpc/msi: Fix section mismatch warning in msi_bitmap_alloc() powerpc/prom: Use of_get_next_parent() in of_get_ibm_chip_id() powerpc/pseries: Correct string length in pseries_of_derive_parent() powerpc/e6500: hw tablewalk: make sure we invalidate and write to the same tlb entry powerpc/mpc85xx: Add FSL QorIQ DPAA FMan support to the SoC device tree(s) powerpc/mpc85xx: Create dts components for the FSL QorIQ DPAA FMan powerpc/fsl: Add #clock-cells and clockgen label to clockgen nodes powerpc: handle error case in cpm_muram_alloc() powerpc: mpic: use IRQCHIP_SKIP_SET_WAKE instead of redundant mpic_irq_set_wake powerpc/book3e-64: Enable kexec powerpc/book3e-64/kexec: Set "r4 = 0" when entering spinloop powerpc/booke: Only use VIRT_PHYS_OFFSET on booke32 powerpc/book3e-64/kexec: Enable SMP release powerpc/book3e-64/kexec: create an identity TLB mapping powerpc/book3e-64: Don't limit paca to 256 MiB powerpc/book3e/kdump: Enable crash_kexec_wait_realmode powerpc/book3e: support CONFIG_RELOCATABLE powerpc/booke64: Fix args to copy_and_flush powerpc/book3e-64: rename interrupt_end_book3e with __end_interrupts powerpc/e6500: kexec: Handle hardware threads ...
2015-11-05Merge branch 'akpm' (patches from Andrew)Linus Torvalds14-6/+29
Merge patch-bomb from Andrew Morton: - inotify tweaks - some ocfs2 updates (many more are awaiting review) - various misc bits - kernel/watchdog.c updates - Some of mm. I have a huge number of MM patches this time and quite a lot of it is quite difficult and much will be held over to next time. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (162 commits) selftests: vm: add tests for lock on fault mm: mlock: add mlock flags to enable VM_LOCKONFAULT usage mm: introduce VM_LOCKONFAULT mm: mlock: add new mlock system call mm: mlock: refactor mlock, munlock, and munlockall code kasan: always taint kernel on report mm, slub, kasan: enable user tracking by default with KASAN=y kasan: use IS_ALIGNED in memory_is_poisoned_8() kasan: Fix a type conversion error lib: test_kasan: add some testcases kasan: update reference to kasan prototype repo kasan: move KASAN_SANITIZE in arch/x86/boot/Makefile kasan: various fixes in documentation kasan: update log messages kasan: accurately determine the type of the bad access kasan: update reported bug types for kernel memory accesses kasan: update reported bug types for not user nor kernel memory accesses mm/kasan: prevent deadlock in kasan reporting mm/kasan: don't use kasan shadow pointer in generic functions mm/kasan: MODULE_VADDR is not available on all archs ...
2015-11-05mm: mlock: add mlock flags to enable VM_LOCKONFAULT usageEric B Munson7-0/+21
The previous patch introduced a flag that specified pages in a VMA should be placed on the unevictable LRU, but they should not be made present when the area is created. This patch adds the ability to set this state via the new mlock system calls. We add MLOCK_ONFAULT for mlock2 and MCL_ONFAULT for mlockall. MLOCK_ONFAULT will set the VM_LOCKONFAULT modifier for VM_LOCKED. MCL_ONFAULT should be used as a modifier to the two other mlockall flags. When used with MCL_CURRENT, all current mappings will be marked with VM_LOCKED | VM_LOCKONFAULT. When used with MCL_FUTURE, the mm->def_flags will be marked with VM_LOCKED | VM_LOCKONFAULT. When used with both MCL_CURRENT and MCL_FUTURE, all current mappings and mm->def_flags will be marked with VM_LOCKED | VM_LOCKONFAULT. Prior to this patch, mlockall() will unconditionally clear the mm->def_flags any time it is called without MCL_FUTURE. This behavior is maintained after adding MCL_ONFAULT. If a call to mlockall(MCL_FUTURE) is followed by mlockall(MCL_CURRENT), the mm->def_flags will be cleared and new VMAs will be unlocked. This remains true with or without MCL_ONFAULT in either mlockall() invocation. munlock() will unconditionally clear both vma flags. munlockall() unconditionally clears for VMA flags on all VMAs and in the mm->def_flags field. Signed-off-by: Eric B Munson <emunson@akamai.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-05mm: mlock: add new mlock system callEric B Munson2-0/+2
With the refactored mlock code, introduce a new system call for mlock. The new call will allow the user to specify what lock states are being added. mlock2 is trivial at the moment, but a follow on patch will add a new mlock state making it useful. Signed-off-by: Eric B Munson <emunson@akamai.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-05kasan: move KASAN_SANITIZE in arch/x86/boot/MakefileAndrey Konovalov1-2/+2
Move KASAN_SANITIZE in arch/x86/boot/Makefile above the comment related to SVGA_MODE, since the comment refers to 'the next line'. Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Konstantin Serebryany <kcc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-05kasan: update log messagesAndrey Konovalov1-1/+1
We decided to use KASAN as the short name of the tool and KernelAddressSanitizer as the full one. Update log messages according to that. Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Konstantin Serebryany <kcc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-05arch/powerpc/mm/numa.c: do not allocate bootmem memory for non existing nodesRaghavendra K T1-1/+1
With the setup_nr_nodes(), we have already initialized node_possible_map. So it is safe to use for_each_node here. There are many places in the kernel that use hardcoded 'for' loop with nr_node_ids, because all other architectures have numa nodes populated serially. That should be reason we had maintained the same for powerpc. But, since sparse numa node ids possible on powerpc, we unnecessarily allocate memory for non existent numa nodes. For e.g., on a system with 0,1,16,17 as numa nodes nr_node_ids=18 and we allocate memory for nodes 2-14. This patch we allocate memory for only existing numa nodes. The patch is boot tested on a 4 node tuleta, confirming with printks that it works as expected. Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Vladimir Davydov <vdavydov@parallels.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Anton Blanchard <anton@samba.org> Cc: Nishanth Aravamudan <nacc@linux.vnet.ibm.com> Cc: Greg Kurz <gkurz@linux.vnet.ibm.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-05uaccess: reimplement probe_kernel_address() using probe_kernel_read()Andrew Morton2-2/+2
probe_kernel_address() is basically the same as the (later added) probe_kernel_read(). The return value on EFAULT is a bit different: probe_kernel_address() returns number-of-bytes-not-copied whereas probe_kernel_read() returns -EFAULT. All callers have been checked, none cared. probe_kernel_read() can be overridden by the architecture whereas probe_kernel_address() cannot. parisc, blackfin and um do this, to insert additional checking. Hence this patch possibly fixes obscure bugs, although there are only two probe_kernel_address() callsites outside arch/. My first attempt involved removing probe_kernel_address() entirely and converting all callsites to use probe_kernel_read() directly, but that got tiresome. This patch shrinks mm/slab_common.o by 218 bytes. For a single probe_kernel_address() callsite. Cc: Steven Miao <realmz6@gmail.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds8-30/+109
Pull sparc updates from David Miller: "Just a couple of fixes/cleanups: - Correct NUMA latency calculations on sparc64, from Nitin Gupta. - ASI_ST_BLKINIT_MRU_S value was wrong, from Rob Gardner. - Fix non-faulting load handling of non-quad values, also from Rob Gardner. - Cleanup VISsave assembler, from Sam Ravnborg. - Fix iommu-common code so it doesn't emit rediculous warnings on some architectures, particularly ARM" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: Fix numa distance values sparc64: Don't restrict fp regs for no-fault loads iommu-common: Fix error code used in iommu_tbl_range_{alloc,free}(). sparc64: use ENTRY/ENDPROC in VISsave sparc64: Fix incorrect ASI_ST_BLKINIT_MRU_S value
2015-11-05Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds54-623/+1767
Pull KVM updates from Paolo Bonzini: "First batch of KVM changes for 4.4. s390: A bunch of fixes and optimizations for interrupt and time handling. PPC: Mostly bug fixes. ARM: No big features, but many small fixes and prerequisites including: - a number of fixes for the arch-timer - introducing proper level-triggered semantics for the arch-timers - a series of patches to synchronously halt a guest (prerequisite for IRQ forwarding) - some tracepoint improvements - a tweak for the EL2 panic handlers - some more VGIC cleanups getting rid of redundant state x86: Quite a few changes: - support for VT-d posted interrupts (i.e. PCI devices can inject interrupts directly into vCPUs). This introduces a new component (in virt/lib/) that connects VFIO and KVM together. The same infrastructure will be used for ARM interrupt forwarding as well. - more Hyper-V features, though the main one Hyper-V synthetic interrupt controller will have to wait for 4.5. These will let KVM expose Hyper-V devices. - nested virtualization now supports VPID (same as PCID but for vCPUs) which makes it quite a bit faster - for future hardware that supports NVDIMM, there is support for clflushopt, clwb, pcommit - support for "split irqchip", i.e. LAPIC in kernel + IOAPIC/PIC/PIT in userspace, which reduces the attack surface of the hypervisor - obligatory smattering of SMM fixes - on the guest side, stable scheduler clock support was rewritten to not require help from the hypervisor" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (123 commits) KVM: VMX: Fix commit which broke PML KVM: x86: obey KVM_X86_QUIRK_CD_NW_CLEARED in kvm_set_cr0() KVM: x86: allow RSM from 64-bit mode KVM: VMX: fix SMEP and SMAP without EPT KVM: x86: move kvm_set_irq_inatomic to legacy device assignment KVM: device assignment: remove pointless #ifdefs KVM: x86: merge kvm_arch_set_irq with kvm_set_msi_inatomic KVM: x86: zero apic_arb_prio on reset drivers/hv: share Hyper-V SynIC constants with userspace KVM: x86: handle SMBASE as physical address in RSM KVM: x86: add read_phys to x86_emulate_ops KVM: x86: removing unused variable KVM: don't pointlessly leave KVM_COMPAT=y in non-KVM configs KVM: arm/arm64: Merge vgic_set_lr() and vgic_sync_lr_elrsr() KVM: arm/arm64: Clean up vgic_retire_lr() and surroundings KVM: arm/arm64: Optimize away redundant LR tracking KVM: s390: use simple switch statement as multiplexer KVM: s390: drop useless newline in debugging data KVM: s390: SCA must not cross page boundaries KVM: arm: Do not indent the arguments of DECLARE_BITMAP ...
2015-11-05Merge tag 'iommu-updates-v4.4' of ↵Linus Torvalds7-21/+499
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: "This time including: - A new IOMMU driver for s390 pci devices - Common dma-ops support based on iommu-api for ARM64. The plan is to use this as a basis for ARM32 and hopefully other architectures as well in the future. - MSI support for ARM-SMMUv3 - Cleanups and dead code removal in the AMD IOMMU driver - Better RMRR handling for the Intel VT-d driver - Various other cleanups and small fixes" * tag 'iommu-updates-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (41 commits) iommu/vt-d: Fix return value check of parse_ioapics_under_ir() iommu/vt-d: Propagate error-value from ir_parse_ioapic_hpet_scope() iommu/vt-d: Adjust the return value of the parse_ioapics_under_ir iommu: Move default domain allocation to iommu_group_get_for_dev() iommu: Remove is_pci_dev() fall-back from iommu_group_get_for_dev iommu/arm-smmu: Switch to device_group call-back iommu/fsl: Convert to device_group call-back iommu: Add device_group call-back to x86 iommu drivers iommu: Add generic_device_group() function iommu: Export and rename iommu_group_get_for_pci_dev() iommu: Revive device_group iommu-ops call-back iommu/amd: Remove find_last_devid_on_pci() iommu/amd: Remove first/last_device handling iommu/amd: Initialize amd_iommu_last_bdf for DEV_ALL iommu/amd: Cleanup buffer allocation iommu/amd: Remove cmd_buf_size and evt_buf_size from struct amd_iommu iommu/amd: Align DTE flag definitions iommu/amd: Remove old alias handling code iommu/amd: Set alias DTE in do_attach/do_detach iommu/amd: WARN when __[attach|detach]_device are called with irqs enabled ...
2015-11-05Merge branch 'next' of ↵Linus Torvalds1-10/+30
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem update from James Morris: "This is mostly maintenance updates across the subsystem, with a notable update for TPM 2.0, and addition of Jarkko Sakkinen as a maintainer of that" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (40 commits) apparmor: clarify CRYPTO dependency selinux: Use a kmem_cache for allocation struct file_security_struct selinux: ioctl_has_perm should be static selinux: use sprintf return value selinux: use kstrdup() in security_get_bools() selinux: use kmemdup in security_sid_to_context_core() selinux: remove pointless cast in selinux_inode_setsecurity() selinux: introduce security_context_str_to_sid selinux: do not check open perm on ftruncate call selinux: change CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE default KEYS: Merge the type-specific data with the payload data KEYS: Provide a script to extract a module signature KEYS: Provide a script to extract the sys cert list from a vmlinux file keys: Be more consistent in selection of union members used certs: add .gitignore to stop git nagging about x509_certificate_list KEYS: use kvfree() in add_key Smack: limited capability for changing process label TPM: remove unnecessary little endian conversion vTPM: support little endian guests char: Drop owner assignment from i2c_driver ...
2015-11-05Merge tag 'spi-v4.4' of ↵Linus Torvalds4-86/+2
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi updates from Mark Brown: "Quite a lot of activity in SPI this cycle, almost all of it in drivers with a few minor improvements and tweaks in the core. - Updates to pxa2xx to support Intel Broxton and multiple chip selects. - Support for big endian in the bcm63xx driver. - Multiple slave support for the mt8173 - New driver for the auxiliary SPI controller in bcm2835 SoCs. - Support for Layerscale SoCs in the Freescale DSPI driver" * tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (87 commits) spi: pxa2xx: Rework self-initiated platform data creation for non-ACPI spi: pxa2xx: Add support for Intel Broxton spi: pxa2xx: Detect number of enabled Intel LPSS SPI chip select signals spi: pxa2xx: Add output control for multiple Intel LPSS chip selects spi: pxa2xx: Use LPSS prefix for defines that are Intel LPSS specific spi: Add DSPI support for layerscape family spi: ti-qspi: improve ->remove() callback spi/spi-xilinx: Fix race condition on last word read spi: Drop owner assignment from spi_drivers spi: Add THIS_MODULE to spi_driver in SPI core spi: Setup the master controller driver before setting the chipselect spi: dw: replace magic constant by DW_SPI_DR spi: mediatek: mt8173 spi multiple devices support spi: mediatek: handle controller_data in mtk_spi_setup spi: mediatek: remove mtk_spi_config spi: mediatek: Update document devicetree bindings to support multiple devices spi: fix kernel-doc warnings about missing return desc in spi.c spi: fix kernel-doc warnings about missing return desc in spi.h spi: pxa2xx: Align a few defines spi: pxa2xx: Save other reg_cs_ctrl bits when configuring chip select ...
2015-11-05Merge tag 'clk-for-linus-20151104' of ↵Linus Torvalds2-1/+4
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "The majority of the changes are driver updates and new device support. The core framework is mostly unchanged this time around, with only a couple patches to expose a clk provider API and make getting clk parent names from DT more robust. Driver updates: - Support for clock controllers found on Broadcom Northstar SoCs and bcm2835 SoC - Support for Allwinner audio clocks - A few cleanup patches for Tegra drivers and support for the highest DFLL frequencies on Tegra124 - Samsung exynos7 fixes and improvements - i.Mx SoC updates to add a few missing clocks and keep debug uart clocks on during kernel intialization - Some mediatek cleanups and support for more subsystem clocks - Support for msm8916 gpu/audio clocks and qcom's GDSC power domain controllers - A new driver for the Silabs si514 clock chip" * tag 'clk-for-linus-20151104' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (143 commits) clk: qcom: msm8960: Fix dsi1/2 halt bits clk: lpc18xx-cgu: fix potential system hang when disabling unused clocks clk: lpc18xx-ccu: fix potential system hang when disabling unused clocks clk: Add clk_hw_is_enabled() for use by clk providers clk: Add stubs for of_clk_*() APIs when CONFIG_OF=n clk: versatile-icst: fix memory leak clk: Remove clk_{register,unregister}_multiplier() clk: iproc: define Broadcom NS2 iProc clock binding clk: iproc: define Broadcom NSP iProc clock binding clk: ns2: add clock support for Broadcom Northstar 2 SoC clk: iproc: Separate status and control variables clk: iproc: Split off dig_filter clk: iproc: Add PLL base write function clk: nsp: add clock support for Broadcom Northstar Plus SoC clk: iproc: Add PWRCTRL support clk: cygnus: Convert all macros to all caps ARM: cygnus: fix link failures when CONFIG_COMMON_CLK_IPROC is disabled clk: imx31: add missing of_node_put clk: imx27: add missing of_node_put clk: si5351: add missing of_node_put ...
2015-11-05Merge tag 'for-v4.4' of ↵Linus Torvalds3-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply Pull power supply and reset updates from Sebastian Reichel: - new AXP20X USB Power driver - new Qualcomm SMBB driver - new TPS65217 Charger driver - BQ24257: add BQ24250/BQ24251 support - overhaul bq27x00 battery driver, rename to bq27xxx - misc fixes and cleanups * tag 'for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (54 commits) power: bq27xxx_battery: Remove unneeded dependency in Kconfig power: bq27xxx_battery: move irq handler to i2c section power: bq27xxx_battery: fix platform probe twl4030_charger: add missing iio dependency power_supply: charger-manager: add missing of_node_put Documentation: power: bq24257: Document exported sysfs entries power: bq24257: Add various device-specific sysfs properties power: bq24257: Allow input current limit sysfs access power: bq24257: Add input DPM voltage threshold setting support power: bq24257: Add over voltage protection setting support power: bq24257: Add SW-based approach for Power Good determination power: bq24257: Allow manual setting of input current limit power: bq24257: Add bit definition for temp sense enable power: bq24257: Add basic support for bq24250/bq24251 dt: power: bq24257-charger: Cover additional devices power: bq24257: Simplify bq24257_power_supply_init() power: bq24257: Use managed power supply register power: bq24257: Streamline input current limit setup power: bq24257: Remove IRQ config through stat-gpios power: bq27xxx_battery: fix signedness bug in bq27xxx_battery_read_health() ...
2015-11-05KVM: VMX: Fix commit which broke PMLKai Huang1-13/+11
I found PML was broken since below commit: commit feda805fe7c4ed9cf78158e73b1218752e3b4314 Author: Xiao Guangrong <guangrong.xiao@linux.intel.com> Date: Wed Sep 9 14:05:55 2015 +0800 KVM: VMX: unify SECONDARY_VM_EXEC_CONTROL update Unify the update in vmx_cpuid_update() Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> [Rewrite to use vmcs_set_secondary_exec_control. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> The reason is in above commit vmx_cpuid_update calls vmx_secondary_exec_control, in which currently SECONDARY_EXEC_ENABLE_PML bit is cleared unconditionally (as PML is enabled in creating vcpu). Therefore if vcpu_cpuid_update is called after vcpu is created, PML will be disabled unexpectedly while log-dirty code still thinks PML is used. Fix this by clearing SECONDARY_EXEC_ENABLE_PML in vmx_secondary_exec_control only when PML is not supported or not enabled (!enable_pml). This is more reasonable as PML is currently either always enabled or disabled. With this explicit updating SECONDARY_EXEC_ENABLE_PML in vmx_enable{disable}_pml is not needed so also rename vmx_enable{disable}_pml to vmx_create{destroy}_pml_buffer. Fixes: feda805fe7c4ed9cf78158e73b1218752e3b4314 Signed-off-by: Kai Huang <kai.huang@linux.intel.com> [While at it, change a wrong ASSERT to an "if". The condition can happen if creating the VCPU fails with ENOMEM. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-05Merge branch 'next' of git://git.denx.de/linux-denx-agust into nextMichael Ellerman10-9/+629
MPC5xxx updates from Anatolij: "Highlights include a driver for MPC512x LocalPlus Bus FIFO with its device tree binding documentation, mpc512x device tree updates and some minor fixes."
2015-11-04Merge tag 'char-misc-4.4-rc1' of ↵Linus Torvalds1-0/+5
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver update for 4.4-rc1. Lots of different driver and subsystem updates, hwtracing being the largest with the addition of some new platforms that are now supported. Full details in the shortlog. All of these have been in linux-next for a long time with no reported issues" * tag 'char-misc-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (181 commits) fpga: socfpga: Fix check of return value of devm_request_irq lkdtm: fix ACCESS_USERSPACE test mcb: Destroy IDA on module unload mcb: Do not return zero on error path in mcb_pci_probe() mei: bus: set the device name before running fixup mei: bus: use correct lock ordering mei: Fix debugfs filename in error output char: ipmi: ipmi_ssif: Replace timeval with timespec64 fpga: zynq-fpga: Fix issue with drvdata being overwritten. fpga manager: remove unnecessary null pointer checks fpga manager: ensure lifetime with of_fpga_mgr_get fpga: zynq-fpga: Change fw format to handle bin instead of bit. fpga: zynq-fpga: Fix unbalanced clock handling misc: sram: partition base address belongs to __iomem space coresight: etm3x: adding documentation for sysFS's cpu interface vme: 8-bit status/id takes 256 values, not 255 fpga manager: Adding FPGA Manager support for Xilinx Zynq 7000 ARM: zynq: dt: Updated devicetree for Zynq 7000 platform. ARM: dt: fpga: Added binding docs for Xilinx Zynq FPGA manager. ver_linux: proc/modules, limit text processing to 'sed' ...
2015-11-04Merge tag 'driver-core-4.4-rc1' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here's the "big" driver core updates for 4.4-rc1. Primarily a bunch of debugfs updates, with a smattering of minor driver core fixes and updates as well. All have been in linux-next for a long time" * tag 'driver-core-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: debugfs: Add debugfs_create_ulong() of: to support binding numa node to specified device in devicetree debugfs: Add read-only/write-only bool file ops debugfs: Add read-only/write-only size_t file ops debugfs: Add read-only/write-only x64 file ops debugfs: Consolidate file mode checks in debugfs_create_*() Revert "mm: Check if section present during memory block (un)registering" driver-core: platform: Provide helpers for multi-driver modules mm: Check if section present during memory block (un)registering devres: fix a for loop bounds check CMA: fix CONFIG_CMA_SIZE_MBYTES overflow in 64bit base/platform: assert that dev_pm_domain callbacks are called unconditionally sysfs: correctly handle short reads on PREALLOC attrs. base: soc: siplify ida usage kobject: move EXPORT_SYMBOL() macros next to corresponding definitions kobject: explain what kobject's sd field is debugfs: document that debugfs_remove*() accepts NULL and error values debugfs: Pass bool pointer to debugfs_create_bool() ACPI / EC: Fix broken 64bit big-endian users of 'global_lock'
2015-11-04Merge tag 'tty-4.4-rc1' of ↵Linus Torvalds1-0/+55
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial driver updates from Greg KH: "Here is the big tty and serial driver update for 4.4-rc1. Lots of serial driver updates and a few small tty core changes. Full details in the shortlog. All of these have been in linux-next for a while" * tag 'tty-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (148 commits) tty: Use unbound workqueue for all input workers tty: Abstract tty buffer work tty: Prevent tty teardown during tty_write_message() tty: core: Use correct spinlock flavor in tiocspgrp() tty: Combine SIGTTOU/SIGTTIN handling serial: amba-pl011: fix incorrect integer size in pl011_fifo_to_tty() ttyFDC: Fix build problems due to use of module_{init,exit} tty: remove unneeded return statement serial: 8250_mid: add support for DMA engine handling from UART MMIO dmaengine: hsu: remove platform data dmaengine: hsu: introduce stubs for the exported functions dmaengine: hsu: make the UART driver in control of selecting this driver serial: fix mctrl helper functions serial: 8250_pci: Intel MID UART support to its own driver serial: fsl_lpuart: add earlycon support tty: disable unbind for old 74xx based serial/mpsc console port serial: pl011: Spelling s/clocks-names/clock-names/ n_tty: Remove reader wakeups for TTY_BREAK/TTY_PARITY chars tty: synclink, fix indentation serial: at91, fix rs485 properties ...
2015-11-04Merge tag 'usb-4.4-rc1' of ↵Linus Torvalds4-9/+9
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB updates from Greg KH: "Here is the big USB patchset for 4.4-rc1. As usual, most of the changes are in the gadget subsystem, and we removed a host controller for a device that is no longer in existance, and probably never was even made public. There is also other minor driver updates and new device ids, full details in the changelog. All of these have been in linux-next for a while" * tag 'usb-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (233 commits) USB: core: Codestyle fix in urb.c usb: misc: usb3503: Use i2c_add_driver helper macro usb: host: lpc32xx: don't unregister phy device usb: host: lpc32xx: balance clk enable/disable on removal usb: host: lpc32xx: fix warnings caused by enabling unprepared clock uwb: drp: Use setup_timer uwb: neh: Use setup_timer uwb: rsv: Use setup_timer USB: qcserial: add Sierra Wireless MC74xx/EM74xx usb: chipidea: otg: don't wait vbus drops below BSV when starts host chipidea: ci_hdrc_pci: use PCI_VDEVICE() instead of PCI_DEVICE() doc: dt-binding: ci-hdrc-usb2: split vendor specific properties usb: chipidea: imx: add imx6ul usb support doc: dt-binding: ci-hdrc-usb2: improve property description usb: chipidea: imx: add usb support for imx7d Doc: usb: ci-hdrc-usb2: Add phy-clkgate-delay-us entry usb: chipidea: Add support for 'phy-clkgate-delay-us' property usb: chipidea: Use extcon framework for VBUS and ID detect usb: gadget: net2280: restore ep_cfg after defect7374 workaround usb: dwc2: host: Fix use after free w/ simultaneous irqs ...
2015-11-04Merge tag 'pm+acpi-4.4-rc1-1' of ↵Linus Torvalds25-548/+231
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management and ACPI updates from Rafael Wysocki: "Quite a new features are included this time. First off, the Collaborative Processor Performance Control interface (version 2) defined by ACPI will now be supported on ARM64 along with a cpufreq frontend for CPU performance scaling. Second, ACPI gets a new infrastructure for the early probing of IRQ chips and clock sources (along the lines of the existing similar mechanism for DT). Next, the ACPI core and the generic device properties API will now support a recently introduced hierarchical properties extension of the _DSD (Device Specific Data) ACPI device configuration object. If the ACPI platform firmware uses that extension to organize device properties in a hierarchical way, the kernel will automatically handle it and make those properties available to device drivers via the generic device properties API. It also will be possible to build the ACPICA's AML interpreter debugger into the kernel now and use that to diagnose AML-related problems more efficiently. In the future, this should make it possible to single-step AML execution and do similar things. Interesting stuff, although somewhat experimental at this point. Finally, the PM core gets a new mechanism that can be used by device drivers to distinguish between suspend-to-RAM (based on platform firmware support) and suspend-to-idle (or other variants of system suspend the platform firmware is not involved in) and possibly optimize their device suspend/resume handling accordingly. In addition to that, some existing features are re-organized quite substantially. First, the ACPI-based handling of PCI host bridges on x86 and ia64 is unified and the common code goes into the ACPI core (so as to reduce code duplication and eliminate non-essential differences between the two architectures in that area). Second, the Operating Performance Points (OPP) framework is reorganized to make the code easier to find and follow. Next, the cpufreq core's sysfs interface is reorganized to get rid of the "primary CPU" concept for configurations in which the same performance scaling settings are shared between multiple CPUs. Finally, some interfaces that aren't necessary any more are dropped from the generic power domains framework. On top of the above we have some minor extensions, cleanups and bug fixes in multiple places, as usual. Specifics: - ACPICA update to upstream revision 20150930 (Bob Moore, Lv Zheng). The most significant change is to allow the AML debugger to be built into the kernel. On top of that there is an update related to the NFIT table (the ACPI persistent memory interface) and a few fixes and cleanups. - ACPI CPPC2 (Collaborative Processor Performance Control v2) support along with a cpufreq frontend (Ashwin Chaugule). This can only be enabled on ARM64 at this point. - New ACPI infrastructure for the early probing of IRQ chips and clock sources (Marc Zyngier). - Support for a new hierarchical properties extension of the ACPI _DSD (Device Specific Data) device configuration object allowing the kernel to handle hierarchical properties (provided by the platform firmware this way) automatically and make them available to device drivers via the generic device properties interface (Rafael Wysocki). - Generic device properties API extension to obtain an index of certain string value in an array of strings, along the lines of of_property_match_string(), but working for all of the supported firmware node types, and support for the "dma-names" device property based on it (Mika Westerberg). - ACPI core fix to parse the MADT (Multiple APIC Description Table) entries in the order expected by platform firmware (and mandated by the specification) to avoid confusion on systems with more than 255 logical CPUs (Lukasz Anaczkowski). - Consolidation of the ACPI-based handling of PCI host bridges on x86 and ia64 (Jiang Liu). - ACPI core fixes to ensure that the correct IRQ number is used to represent the SCI (System Control Interrupt) in the cases when it has been re-mapped (Chen Yu). - New ACPI backlight quirk for Lenovo IdeaPad S405 (Hans de Goede). - ACPI EC driver fixes (Lv Zheng). - Assorted ACPI fixes and cleanups (Dan Carpenter, Insu Yun, Jiri Kosina, Rami Rosen, Rasmus Villemoes). - New mechanism in the PM core allowing drivers to check if the platform firmware is going to be involved in the upcoming system suspend or if it has been involved in the suspend the system is resuming from at the moment (Rafael Wysocki). This should allow drivers to optimize their suspend/resume handling in some cases and the changes include a couple of users of it (the i8042 input driver, PCI PM). - PCI PM fix to prevent runtime-suspended devices with PME enabled from being resumed during system suspend even if they aren't configured to wake up the system from sleep (Rafael Wysocki). - New mechanism to report the number of a wakeup IRQ that woke up the system from sleep last time (Alexandra Yates). - Removal of unused interfaces from the generic power domains framework and fixes related to latency measurements in that code (Ulf Hansson, Daniel Lezcano). - cpufreq core sysfs interface rework to make it handle CPUs that share performance scaling settings (represented by a common cpufreq policy object) more symmetrically (Viresh Kumar). This should help to simplify the CPU offline/online handling among other things. - cpufreq core fixes and cleanups (Viresh Kumar). - intel_pstate fixes related to the Turbo Activation Ratio (TAR) mechanism on client platforms which causes the turbo P-states range to vary depending on platform firmware settings (Srinivas Pandruvada). - intel_pstate sysfs interface fix (Prarit Bhargava). - Assorted cpufreq driver (imx, tegra20, powernv, integrator) fixes and cleanups (Bai Ping, Bartlomiej Zolnierkiewicz, Shilpasri G Bhat, Luis de Bethencourt). - cpuidle mvebu driver cleanups (Russell King). - OPP (Operating Performance Points) framework code reorganization to make it more maintainable (Viresh Kumar). - Intel Broxton support for the RAPL (Running Average Power Limits) power capping driver (Amy Wiles). - Assorted power management code fixes and cleanups (Dan Carpenter, Geert Uytterhoeven, Geliang Tang, Luis de Bethencourt, Rasmus Villemoes)" * tag 'pm+acpi-4.4-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (108 commits) cpufreq: postfix policy directory with the first CPU in related_cpus cpufreq: create cpu/cpufreq/policyX directories cpufreq: remove cpufreq_sysfs_{create|remove}_file() cpufreq: create cpu/cpufreq at boot time cpufreq: Use cpumask_copy instead of cpumask_or to copy a mask cpufreq: ondemand: Drop unnecessary locks from update_sampling_rate() PM / Domains: Merge measurements for PM QoS device latencies PM / Domains: Don't measure ->start|stop() latency in system PM callbacks PM / clk: Fix broken build due to non-matching code and header #ifdefs ACPI / Documentation: add copy_dsdt to ACPI format options ACPI / sysfs: correctly check failing memory allocation ACPI / video: Add a quirk to force native backlight on Lenovo IdeaPad S405 ACPI / CPPC: Fix potential memory leak ACPI / CPPC: signedness bug in register_pcc_channel() ACPI / PAD: power_saving_thread() is not freezable ACPI / PM: Fix incorrect wakeup IRQ setting during suspend-to-idle ACPI: Using correct irq when waiting for events ACPI: Use correct IRQ when uninstalling ACPI interrupt handler cpuidle: mvebu: disable the bind/unbind attributes and use builtin_platform_driver cpuidle: mvebu: clean up multiple platform drivers ...
2015-11-04Merge tag 'for-linus-4.4-rc0-tag' of ↵Linus Torvalds13-46/+136
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from David Vrabel: - Improve balloon driver memory hotplug placement. - Use unpopulated hotplugged memory for foreign pages (if supported/enabled). - Support 64 KiB guest pages on arm64. - CPU hotplug support on arm/arm64. * tag 'for-linus-4.4-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (44 commits) xen: fix the check of e_pfn in xen_find_pfn_range x86/xen: add reschedule point when mapping foreign GFNs xen/arm: don't try to re-register vcpu_info on cpu_hotplug. xen, cpu_hotplug: call device_offline instead of cpu_down xen/arm: Enable cpu_hotplug.c xenbus: Support multiple grants ring with 64KB xen/grant-table: Add an helper to iterate over a specific number of grants xen/xenbus: Rename *RING_PAGE* to *RING_GRANT* xen/arm: correct comment in enlighten.c xen/gntdev: use types from linux/types.h in userspace headers xen/gntalloc: use types from linux/types.h in userspace headers xen/balloon: Use the correct sizeof when declaring frame_list xen/swiotlb: Add support for 64KB page granularity xen/swiotlb: Pass addresses rather than frame numbers to xen_arch_need_swiotlb arm/xen: Add support for 64KB page granularity xen/privcmd: Add support for Linux 64KB page granularity net/xen-netback: Make it running on 64KB page granularity net/xen-netfront: Make it running on 64KB page granularity block/xen-blkback: Make it running on 64KB page granularity block/xen-blkfront: Make it running on 64KB page granularity ...
2015-11-04Merge tag 'arm64-upstream' of ↵Linus Torvalds88-2474/+3177
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: - "genirq: Introduce generic irq migration for cpu hotunplugged" patch merged from tip/irq/for-arm to allow the arm64-specific part to be upstreamed via the arm64 tree - CPU feature detection reworked to cope with heterogeneous systems where CPUs may not have exactly the same features. The features reported by the kernel via internal data structures or ELF_HWCAP are delayed until all the CPUs are up (and before user space starts) - Support for 16KB pages, with the additional bonus of a 36-bit VA space, though the latter only depending on EXPERT - Implement native {relaxed, acquire, release} atomics for arm64 - New ASID allocation algorithm which avoids IPI on roll-over, together with TLB invalidation optimisations (using local vs global where feasible) - KASan support for arm64 - EFI_STUB clean-up and isolation for the kernel proper (required by KASan) - copy_{to,from,in}_user optimisations (sharing the memcpy template) - perf: moving arm64 to the arm32/64 shared PMU framework - L1_CACHE_BYTES increased to 128 to accommodate Cavium hardware - Support for the contiguous PTE hint on kernel mapping (16 consecutive entries may be able to use a single TLB entry) - Generic CONFIG_HZ now used on arm64 - defconfig updates * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (91 commits) arm64/efi: fix libstub build under CONFIG_MODVERSIONS ARM64: Enable multi-core scheduler support by default arm64/efi: move arm64 specific stub C code to libstub arm64: page-align sections for DEBUG_RODATA arm64: Fix build with CONFIG_ZONE_DMA=n arm64: Fix compat register mappings arm64: Increase the max granular size arm64: remove bogus TASK_SIZE_64 check arm64: make Timer Interrupt Frequency selectable arm64/mm: use PAGE_ALIGNED instead of IS_ALIGNED arm64: cachetype: fix definitions of ICACHEF_* flags arm64: cpufeature: declare enable_cpu_capabilities as static genirq: Make the cpuhotplug migration code less noisy arm64: Constify hwcap name string arrays arm64/kvm: Make use of the system wide safe values arm64/debug: Make use of the system wide safe value arm64: Move FP/ASIMD hwcap handling to common code arm64/HWCAP: Use system wide safe values arm64/capabilities: Make use of system wide safe value arm64: Delay cpu feature capability checks ...
2015-11-04sparc64: Fix numa distance valuesNitin Gupta2-1/+72
Orabug: 21896119 Use machine descriptor (MD) to get node latency values instead of just using default values. Testing: On an T5-8 system with: - total nodes = 8 - self latencies = 0x26d18 - latency to other nodes = 0x3a598 => latency ratio = ~1.5 output of numactl --hardware - before fix: node distances: node 0 1 2 3 4 5 6 7 0: 10 20 20 20 20 20 20 20 1: 20 10 20 20 20 20 20 20 2: 20 20 10 20 20 20 20 20 3: 20 20 20 10 20 20 20 20 4: 20 20 20 20 10 20 20 20 5: 20 20 20 20 20 10 20 20 6: 20 20 20 20 20 20 10 20 7: 20 20 20 20 20 20 20 10 - after fix: node distances: node 0 1 2 3 4 5 6 7 0: 10 15 15 15 15 15 15 15 1: 15 10 15 15 15 15 15 15 2: 15 15 10 15 15 15 15 15 3: 15 15 15 10 15 15 15 15 4: 15 15 15 15 10 15 15 15 5: 15 15 15 15 15 10 15 15 6: 15 15 15 15 15 15 10 15 7: 15 15 15 15 15 15 15 10 Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com> Reviewed-by: Chris Hyser <chris.hyser@oracle.com> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-04sparc64: Don't restrict fp regs for no-fault loadsRob Gardner1-7/+15
The function handle_ldf_stq() deals with no-fault ASI loads and stores, but restricts fp registers to quad word regs (ie, %f0, %f4 etc). This is valid for the STQ case, but unnecessarily restricts loads, which may be single precision, double, or quad. This results in SIGFPE being raised for this instruction when the source address is invalid: ldda [%g1] ASI_PNF, %f2 but not for this one: ldda [%g1] ASI_PNF, %f4 The validation check for quad register is moved to within the STQ block so that loads are not affected by the check. An additional problem is that the calculation for freg is incorrect when a single precision load is being handled. This causes %f1 to be seen as %f32 etc, and the incorrect register ends up being overwritten. This code sequence demonstrates the problem: ldd [%g1], %f32 ! g1 = valid address lda [%i3] ASI_PNF, %f1 ! i3 = invalid address std %f32, [%g1] This is corrected by basing the freg calculation on the load size. Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-04Merge branch 'for-linus' of ↵Linus Torvalds69-866/+1146
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Martin Schwidefsky: "There is only one new feature in this pull for the 4.4 merge window, most of it is small enhancements, cleanup and bug fixes: - Add the s390 backend for the software dirty bit tracking. This adds two new pgtable functions pte_clear_soft_dirty and pmd_clear_soft_dirty which is why there is a hit to arch/x86/include/asm/pgtable.h in this pull request. - A series of cleanup patches for the AP bus, this includes the removal of the support for two outdated crypto cards (PCICC and PCICA). - The irq handling / signaling on buffer full in the runtime instrumentation code is dropped. - Some micro optimizations: remove unnecessary memory barriers for a couple of functions: [smb_]rmb, [smb_]wmb, atomics, bitops, and for spin_unlock. Use the builtin bswap if available and make test_and_set_bit_lock more cache friendly. - Statistics and a tracepoint for the diagnose calls to the hypervisor. - The CPU measurement facility support to sample KVM guests is improved. - The vector instructions are now always enabled for user space processes if the hardware has the vector facility. This simplifies the FPU handling code. The fpu-internal.h header is split into fpu internals, api and types just like x86. - Cleanup and improvements for the common I/O layer. - Rework udelay to solve a problem with kprobe. udelay has busy loop semantics but still uses an idle processor state for the wait" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (66 commits) s390: remove runtime instrumentation interrupts s390/cio: de-duplicate subchannel validation s390/css: unneeded initialization in for_each_subchannel s390/Kconfig: use builtin bswap s390/dasd: fix disconnected device with valid path mask s390/dasd: fix invalid PAV assignment after suspend/resume s390/dasd: fix double free in dasd_eckd_read_conf s390/kernel: fix ptrace peek/poke for floating point registers s390/cio: move ccw_device_stlck functions s390/cio: move ccw_device_call_handler s390/topology: reduce per_cpu() invocations s390/nmi: reduce size of percpu variable s390/nmi: fix terminology s390/nmi: remove casts s390/nmi: remove pointless error strings s390: don't store registers on disabled wait anymore s390: get rid of __set_psw_mask() s390/fpu: split fpu-internal.h into fpu internals, api, and type headers s390/dasd: fix list_del corruption after lcu changes s390/spinlock: remove unneeded serializations at unlock ...
2015-11-04iommu-common: Fix error code used in iommu_tbl_range_{alloc,free}().David S. Miller3-16/+16
The value returned from iommu_tbl_range_alloc() (and the one passed in as a fourth argument to iommu_tbl_range_free) is not a DMA address, it is rather an index into the IOMMU page table. Therefore using DMA_ERROR_CODE is not appropriate. Use a more type matching error code define, IOMMU_ERROR_CODE, and update all users of this interface. Reported-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-04Merge branch 'parisc-4.3-2' of ↵Linus Torvalds3-14/+10
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc updates from Helge Deller: "The most important change is that we reduce L1_CACHE_BYTES to 16 bytes, for which a trivial patch for XPS in the network layer was needed. Then we wire up the sys_membarrier and userfaultfd syscalls and added two other small cleanups" * 'parisc-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Change L1_CACHE_BYTES to 16 net/xps: Fix calculation of initial number of xps queues parisc: reduce syslog debug output parisc: serial/mux: Convert to uart_console_device instead of open-coded parisc: Wire up userfaultfd syscall parisc: allocate sys_membarrier system call number
2015-11-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds18-16/+269
Pull networking updates from David Miller: Changes of note: 1) Allow to schedule ICMP packets in IPVS, from Alex Gartrell. 2) Provide FIB table ID in ipv4 route dumps just as ipv6 does, from David Ahern. 3) Allow the user to ask for the statistics to be filtered out of ipv4/ipv6 address netlink dumps. From Sowmini Varadhan. 4) More work to pass the network namespace context around deep into various packet path APIs, starting with the netfilter hooks. From Eric W Biederman. 5) Add layer 2 TX/RX checksum offloading to qeth driver, from Thomas Richter. 6) Use usec resolution for SYN/ACK RTTs in TCP, from Yuchung Cheng. 7) Support Very High Throughput in wireless MESH code, from Bob Copeland. 8) Allow setting the ageing_time in switchdev/rocker. From Scott Feldman. 9) Properly autoload L2TP type modules, from Stephen Hemminger. 10) Fix and enable offload features by default in 8139cp driver, from David Woodhouse. 11) Support both ipv4 and ipv6 sockets in a single vxlan device, from Jiri Benc. 12) Fix CWND limiting of thin streams in TCP, from Bendik Rønning Opstad. 13) Fix IPSEC flowcache overflows on large systems, from Steffen Klassert. 14) Convert bridging to track VLANs using rhashtable entries rather than a bitmap. From Nikolay Aleksandrov. 15) Make TCP listener handling completely lockless, this is a major accomplishment. Incoming request sockets now live in the established hash table just like any other socket too. From Eric Dumazet. 15) Provide more bridging attributes to netlink, from Nikolay Aleksandrov. 16) Use hash based algorithm for ipv4 multipath routing, this was very long overdue. From Peter Nørlund. 17) Several y2038 cures, mostly avoiding timespec. From Arnd Bergmann. 18) Allow non-root execution of EBPF programs, from Alexei Starovoitov. 19) Support SO_INCOMING_CPU as setsockopt, from Eric Dumazet. This influences the port binding selection logic used by SO_REUSEPORT. 20) Add ipv6 support to VRF, from David Ahern. 21) Add support for Mellanox Spectrum switch ASIC, from Jiri Pirko. 22) Add rtl8xxxu Realtek wireless driver, from Jes Sorensen. 23) Implement RACK loss recovery in TCP, from Yuchung Cheng. 24) Support multipath routes in MPLS, from Roopa Prabhu. 25) Fix POLLOUT notification for listening sockets in AF_UNIX, from Eric Dumazet. 26) Add new QED Qlogic river, from Yuval Mintz, Manish Chopra, and Sudarsana Kalluru. 27) Don't fetch timestamps on AF_UNIX sockets, from Hannes Frederic Sowa. 28) Support ipv6 geneve tunnels, from John W Linville. 29) Add flood control support to switchdev layer, from Ido Schimmel. 30) Fix CHECKSUM_PARTIAL handling of potentially fragmented frames, from Hannes Frederic Sowa. 31) Support persistent maps and progs in bpf, from Daniel Borkmann. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1790 commits) sh_eth: use DMA barriers switchdev: respect SKIP_EOPNOTSUPP flag in case there is no recursion net: sched: kill dead code in sch_choke.c irda: Delete an unnecessary check before the function call "irlmp_unregister_service" net: dsa: mv88e6xxx: include DSA ports in VLANs net: dsa: mv88e6xxx: disable SA learning for DSA and CPU ports net/core: fix for_each_netdev_feature vlan: Invoke driver vlan hooks only if device is present arcnet/com20020: add LEDS_CLASS dependency bpf, verifier: annotate verbose printer with __printf dp83640: Only wait for timestamps for packets with timestamping enabled. ptp: Change ptp_class to a proper bitmask dp83640: Prune rx timestamp list before reading from it dp83640: Delay scheduled work. dp83640: Include hash in timestamp/packet matching ipv6: fix tunnel error handling net/mlx5e: Fix LSO vlan insertion net/mlx5e: Re-eanble client vlan TX acceleration net/mlx5e: Return error in case mlx5e_set_features() fails net/mlx5e: Don't allow more than max supported channels ...
2015-11-04Merge branch 'linus' of ↵Linus Torvalds11-158/+1428
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto update from Herbert Xu: "API: - Add support for cipher output IVs in testmgr - Add missing crypto_ahash_blocksize helper - Mark authenc and des ciphers as not allowed under FIPS. Algorithms: - Add CRC support to 842 compression - Add keywrap algorithm - A number of changes to the akcipher interface: + Separate functions for setting public/private keys. + Use SG lists. Drivers: - Add Intel SHA Extension optimised SHA1 and SHA256 - Use dma_map_sg instead of custom functions in crypto drivers - Add support for STM32 RNG - Add support for ST RNG - Add Device Tree support to exynos RNG driver - Add support for mxs-dcp crypto device on MX6SL - Add xts(aes) support to caam - Add ctr(aes) and xts(aes) support to qat - A large set of fixes from Russell King for the marvell/cesa driver" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (115 commits) crypto: asymmetric_keys - Fix unaligned access in x509_get_sig_params() crypto: akcipher - Don't #include crypto/public_key.h as the contents aren't used hwrng: exynos - Add Device Tree support hwrng: exynos - Fix missing configuration after suspend to RAM hwrng: exynos - Add timeout for waiting on init done dt-bindings: rng: Describe Exynos4 PRNG bindings crypto: marvell/cesa - use __le32 for hardware descriptors crypto: marvell/cesa - fix missing cpu_to_le32() in mv_cesa_dma_add_op() crypto: marvell/cesa - use memcpy_fromio()/memcpy_toio() crypto: marvell/cesa - use gfp_t for gfp flags crypto: marvell/cesa - use dma_addr_t for cur_dma crypto: marvell/cesa - use readl_relaxed()/writel_relaxed() crypto: caam - fix indentation of close braces crypto: caam - only export the state we really need to export crypto: caam - fix non-block aligned hash calculation crypto: caam - avoid needlessly saving and restoring caam_hash_ctx crypto: caam - print errno code when hash registration fails crypto: marvell/cesa - fix memory leak crypto: marvell/cesa - fix first-fragment handling in mv_cesa_ahash_dma_last_req() crypto: marvell/cesa - rearrange handling for sw padded hashes ...
2015-11-04KVM: x86: obey KVM_X86_QUIRK_CD_NW_CLEARED in kvm_set_cr0()Laszlo Ersek1-1/+3
Commit b18d5431acc7 ("KVM: x86: fix CR0.CD virtualization") was technically correct, but it broke OVMF guests by slowing down various parts of the firmware. Commit fb279950ba02 ("KVM: vmx: obey KVM_QUIRK_CD_NW_CLEARED") quirked the first function modified by b18d5431acc7, vmx_get_mt_mask(), for OVMF's sake. This restored the speed of the OVMF code that runs before PlatformPei (including the memory intensive LZMA decompression in SEC). This patch extends the quirk to the second function modified by b18d5431acc7, kvm_set_cr0(). It eliminates the intrusive slowdown that hits the EFI_MP_SERVICES_PROTOCOL implementation of edk2's UefiCpuPkg/CpuDxe -- which is built into OVMF --, when CpuDxe starts up all APs at once for initialization, in order to count them. We also carry over the kvm_arch_has_noncoherent_dma() sub-condition from the other half of the original commit b18d5431acc7. Fixes: b18d5431acc7a2fd22767925f3a6f597aa4bd29e Cc: stable@vger.kernel.org Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Tested-by: Janusz Mocek <januszmk6@gmail.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com># Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-04KVM: x86: allow RSM from 64-bit modePaolo Bonzini1-5/+25
The SDM says that exiting system management mode from 64-bit mode is invalid, but that would be too good to be true. But actually, most of the code is already there to support exiting from compat mode (EFER.LME=1, EFER.LMA=0). Getting all the way from 64-bit mode to real mode only requires clearing CS.L and CR4.PCIDE. Cc: stable@vger.kernel.org Fixes: 660a5d517aaab9187f93854425c4c63f4a09195c Tested-by: Laszlo Ersek <lersek@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-04KVM: VMX: fix SMEP and SMAP without EPTRadim Krčmář1-9/+10
The comment in code had it mostly right, but we enable paging for emulated real mode regardless of EPT. Without EPT (which implies emulated real mode), secondary VCPUs won't start unless we disable SM[AE]P when the guest doesn't use paging. Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>