BMC/Intel-BMC/linux.git/arch/x86/Kconfig, branch dev

x86/fpu, sched: Introduce CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT and use it on x86

2015-07-18T01:42:51+00:00

Don't burden architectures without dynamic task_struct sizing with the overhead of dynamic sizing. Also optimize the x86 code a bit by caching task_struct_size. Acked-and-Tested-by: Dave Hansen Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Dave Hansen Cc: Denys Vlasenko Cc: Linus Torvalds Cc: Oleg Nesterov Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1437128892-9831-3-git-send-email-mingo@kernel.org Signed-off-by: Ingo Molnar

x86/kconfig: Fix typo in the CONFIG_CMDLINE_BOOL help text

2015-07-08T09:10:56+00:00

Signed-off-by: Sébastien Hinderer Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Samuel Thibault Cc: Thomas Gleixner Signed-off-by: Ingo Molnar

x86/kasan: Move KASAN_SHADOW_OFFSET to the arch Kconfig

2015-07-06T12:53:15+00:00

KASAN_SHADOW_OFFSET is purely arch specific setting, so it should be in arch's Kconfig file. Signed-off-by: Andrey Ryabinin Cc: Alexander Popov Cc: Alexander Potapenko Cc: Andrey Konovalov Cc: Borislav Petkov Cc: Dmitry Vyukov Cc: Linus Torvalds Cc: Paul Bolle Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1435828178-10975-7-git-send-email-a.ryabinin@samsung.com Signed-off-by: Ingo Molnar

x86: opt into HAVE_COPY_THREAD_TLS, for both 32-bit and 64-bit

2015-07-01T02:45:01+00:00

For 32-bit userspace on a 64-bit kernel, this requires modifying stub32_clone to actually swap the appropriate arguments to match CONFIG_CLONE_BACKWARDS, rather than just leaving the C argument for tls broken. Patch co-authored by Josh Triplett and Thiago Macieira. Signed-off-by: Josh Triplett Acked-by: Andy Lutomirski Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Thiago Macieira Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

x86: mm: enable deferred struct page initialisation on x86-64

2015-07-01T02:44:56+00:00

Subject says it all. Other architectures may enable on a case-by-case basis after auditing early_pfn_to_nid and testing. Signed-off-by: Mel Gorman Tested-by: Nate Zimmer Tested-by: Waiman Long Tested-by: Daniel J Blueman Acked-by: Pekka Enberg Cc: Robin Holt Cc: Nate Zimmer Cc: Dave Hansen Cc: Waiman Long Cc: Scott Norton Cc: "Luck, Tony" Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge tag 'libnvdimm-for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm

2015-06-29T17:34:42+00:00

Pull libnvdimm subsystem from Dan Williams: "The libnvdimm sub-system introduces, in addition to the libnvdimm-core, 4 drivers / enabling modules: NFIT: Instantiates an "nvdimm bus" with the core and registers memory devices (NVDIMMs) enumerated by the ACPI 6.0 NFIT (NVDIMM Firmware Interface table). After registering NVDIMMs the NFIT driver then registers "region" devices. A libnvdimm-region defines an access mode and the boundaries of persistent memory media. A region may span multiple NVDIMMs that are interleaved by the hardware memory controller. In turn, a libnvdimm-region can be carved into a "namespace" device and bound to the PMEM or BLK driver which will attach a Linux block device (disk) interface to the memory. PMEM: Initially merged in v4.1 this driver for contiguous spans of persistent memory address ranges is re-worked to drive PMEM-namespaces emitted by the libnvdimm-core. In this update the PMEM driver, on x86, gains the ability to assert that writes to persistent memory have been flushed all the way through the caches and buffers in the platform to persistent media. See memcpy_to_pmem() and wmb_pmem(). BLK: This new driver enables access to persistent memory media through "Block Data Windows" as defined by the NFIT. The primary difference of this driver to PMEM is that only a small window of persistent memory is mapped into system address space at any given point in time. Per-NVDIMM windows are reprogrammed at run time, per-I/O, to access different portions of the media. BLK-mode, by definition, does not support DAX. BTT: This is a library, optionally consumed by either PMEM or BLK, that converts a byte-accessible namespace into a disk with atomic sector update semantics (prevents sector tearing on crash or power loss). The sinister aspect of sector tearing is that most applications do not know they have a atomic sector dependency. At least today's disk's rarely ever tear sectors and if they do one almost certainly gets a CRC error on access. NVDIMMs will always tear and always silently. Until an application is audited to be robust in the presence of sector-tearing the usage of BTT is recommended. Thanks to: Ross Zwisler, Jeff Moyer, Vishal Verma, Christoph Hellwig, Ingo Molnar, Neil Brown, Boaz Harrosh, Robert Elliott, Matthew Wilcox, Andy Rudoff, Linda Knippers, Toshi Kani, Nicholas Moulin, Rafael Wysocki, and Bob Moore" * tag 'libnvdimm-for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm: (33 commits) arch, x86: pmem api for ensuring durability of persistent memory updates libnvdimm: Add sysfs numa_node to NVDIMM devices libnvdimm: Set numa_node to NVDIMM devices acpi: Add acpi_map_pxm_to_online_node() libnvdimm, nfit: handle unarmed dimms, mark namespaces read-only pmem: flag pmem block devices as non-rotational libnvdimm: enable iostat pmem: make_request cleanups libnvdimm, pmem: fix up max_hw_sectors libnvdimm, blk: add support for blk integrity libnvdimm, btt: add support for blk integrity fs/block_dev.c: skip rw_page if bdev has integrity libnvdimm: Non-Volatile Devices tools/testing/nvdimm: libnvdimm unit test infrastructure libnvdimm, nfit, nd_blk: driver for BLK-mode access persistent memory nd_btt: atomic sector updates libnvdimm: infrastructure for btt devices libnvdimm: write blk label set libnvdimm: write pmem label set libnvdimm: blk labels and namespace instantiation ...

Merge tag 'char-misc-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2015-06-26T21:51:15+00:00

Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver pull request for 4.2-rc1. Lots of mei, extcon, coresight, uio, mic, and other driver updates in here. Full details in the shortlog. All of these have been in linux-next for some time with no reported problems" * tag 'char-misc-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (176 commits) mei: me: wait for power gating exit confirmation mei: reset flow control on the last client disconnection MAINTAINERS: mei: add mei_cl_bus.h to maintained file list misc: sram: sort and clean up included headers misc: sram: move reserved block logic out of probe function misc: sram: add private struct device and virt_base members misc: sram: report correct SRAM pool size misc: sram: bump error message level on unclean driver unbinding misc: sram: fix device node reference leak on error misc: sram: fix enabled clock leak on error path misc: mic: Fix reported static checker warning misc: mic: Fix randconfig build error by including errno.h uio: pruss: Drop depends on ARCH_DAVINCI_DA850 from config uio: pruss: Add CONFIG_HAS_IOMEM dependence uio: pruss: Include extcon: Redefine the unique id of supported external connectors without 'enum extcon' type char:xilinx_hwicap:buffer_icap - change 1/0 to true/false for bool type variable in function buffer_icap_set_configuration(). Drivers: hv: vmbus: Allocate ring buffer memory in NUMA aware fashion parport: check exclusive access before register w1: use correct lock on error in w1_seq_show() ...

arch, x86: pmem api for ensuring durability of persistent memory updates

2015-06-26T15:23:38+00:00

Based on an original patch by Ross Zwisler [1]. Writes to persistent memory have the potential to be posted to cpu cache, cpu write buffers, and platform write buffers (memory controller) before being committed to persistent media. Provide apis, memcpy_to_pmem(), wmb_pmem(), and memremap_pmem(), to write data to pmem and assert that it is durable in PMEM (a persistent linear address range). A '__pmem' attribute is added so sparse can track proper usage of pointers to pmem. This continues the status quo of pmem being x86 only for 4.2, but reworks to ioremap, and wider implementation of memremap() will enable other archs in 4.3. [1]: https://lists.01.org/pipermail/linux-nvdimm/2015-May/000932.html Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Signed-off-by: Ross Zwisler [djbw: various reworks] Signed-off-by: Dan Williams

Merge tag 'edac_for_4.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

2015-06-25T02:52:06+00:00

Pull EDAC updates from Borislav Petkov: - New APM X-Gene SoC EDAC driver (Loc Ho) - AMD error injection module improvements (Aravind Gopalakrishnan) - Altera Arria 10 support (Thor Thayer) - misc fixes and cleanups all over the place * tag 'edac_for_4.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (28 commits) EDAC: Update Documentation/edac.txt EDAC: Fix typos in Documentation/edac.txt EDAC, mce_amd_inj: Set MISCV on injection EDAC, mce_amd_inj: Move bit preparations before the injection EDAC, mce_amd_inj: Cleanup and simplify README EDAC, altera: Do not allow suspend when EDAC is enabled EDAC, mce_amd_inj: Make inj_type static arm: socfpga: dts: Add Arria10 SDRAM EDAC DTS support EDAC, altera: Add Arria10 EDAC support EDAC, altera: Refactor for Altera CycloneV SoC EDAC, altera: Generalize driver to use DT Memory size EDAC, mce_amd_inj: Add README file EDAC, mce_amd_inj: Add individual permissions field to dfs_node EDAC, mce_amd_inj: Modify flags attribute to use string arguments EDAC, mce_amd_inj: Read out number of MCE banks from the hardware EDAC, mce_amd_inj: Use MCE_INJECT_GET macro for bank node too EDAC, xgene: Fix cpuid abuse EDAC, mpc85xx: Extend error address to 64 bit EDAC, mpc8xxx: Adapt for FSL SoC EDAC, edac_stub: Drop arch-specific include ...

libnvdimm, pmem: add libnvdimm support to the pmem driver

2015-06-25T01:24:10+00:00

nd_pmem attaches to persistent memory regions and namespaces emitted by the libnvdimm subsystem, and, same as the original pmem driver, presents the system-physical-address range as a block device. The existing e820-type-12 to pmem setup is converted to an nvdimm_bus that emits an nd_namespace_io device. Note that the X in 'pmemX' is now derived from the parent region. This provides some stability to the pmem devices names from boot-to-boot. The minor numbers are also more predictable by passing 0 to alloc_disk(). Cc: Andy Lutomirski Cc: Boaz Harrosh Cc: H. Peter Anvin Cc: Jens Axboe Cc: Ingo Molnar Cc: Christoph Hellwig Signed-off-by: Ross Zwisler Acked-by: Christoph Hellwig Tested-by: Toshi Kani Signed-off-by: Dan Williams