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2016-06-03Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer bugfix from Thomas Gleixner: "A single bugfix for the error check wreckage we introduced in the merge window" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: Make settimeofday error checking work again
2016-06-03mm: check the return value of lookup_page_ext for all call sitesYang Shi
Per the discussion with Joonsoo Kim [1], we need check the return value of lookup_page_ext() for all call sites since it might return NULL in some cases, although it is unlikely, i.e. memory hotplug. Tested with ltp with "page_owner=0". [1] http://lkml.kernel.org/r/20160519002809.GA10245@js1304-P5Q-DELUXE [akpm@linux-foundation.org: fix build-breaking typos] [arnd@arndb.de: fix build problems from lookup_page_ext] Link: http://lkml.kernel.org/r/6285269.2CksypHdYp@wuerfel [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/1464023768-31025-1-git-send-email-yang.shi@linaro.org Signed-off-by: Yang Shi <yang.shi@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-06-03kdump: fix dmesg gdbmacro to work with record based printkCorey Minyard
Commit 7ff9554bb578 ("printk: convert byte-buffer to variable-length record buffer") introduced a record based printk buffer. Modify gdbmacros.txt to parse this new structure so dmesg will work properly. Link: http://lkml.kernel.org/r/1463515794-1599-1-git-send-email-minyard@acm.org Signed-off-by: Corey Minyard <cminyard@mvista.com> Cc: Dave Young <dyoung@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-06-03mm: fix overflow in vm_map_ram()Guillermo Julián Moreno
When remapping pages accounting for 4G or more memory space, the operation 'count << PAGE_SHIFT' overflows as it is performed on an integer. Solution: cast before doing the bitshift. [akpm@linux-foundation.org: fix vm_unmap_ram() also] [akpm@linux-foundation.org: fix vmap() as well, per Guillermo] Link: http://lkml.kernel.org/r/etPan.57175fb3.7a271c6b.2bd@naudit.es Signed-off-by: Guillermo Julián Moreno <guillermo.julian@naudit.es> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-06-03Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds
Pull ARM fix from Russell King: "Just one fix to the ptrace code, spotted by Simon Marchi, where if a thread migrates to a different CPU and the VFP registers are changed through ptrace, the application doesn't see the updated VFP registers" * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: fix PTRACE_SETVFPREGS on SMP systems
2016-06-03Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: "The main thing here is reviving hugetlb support using contiguous ptes, which we ended up reverting at the last minute in 4.5 pending a fix which went into the core mm/ code during the recent merge window. - Revert a previous revert and get hugetlb going with contiguous hints - Wire up missing compat syscalls - Enable CONFIG_SET_MODULE_RONX by default - Add missing line to our compat /proc/cpuinfo output - Clarify levels in our page table dumps - Fix booting with RANDOMIZE_TEXT_OFFSET enabled - Misc fixes to the ARM CPU PMU driver (refcounting, probe failure) - Remove some dead code and update a comment" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: fix alignment when RANDOMIZE_TEXT_OFFSET is enabled arm64: move {PAGE,CONT}_SHIFT into Kconfig arm64: mm: dump: log span level arm64: update stale PAGE_OFFSET comment drivers/perf: arm_pmu: Avoid leaking pmu->irq_affinity on error drivers/perf: arm_pmu: Defer the setting of __oprofile_cpu_pmu drivers/perf: arm_pmu: Fix reference count of a device_node in of_pmu_irq_cfg arm64: report CPU number in bad_mode arm64: unistd32.h: wire up missing syscalls for compat tasks arm64: Provide "model name" in /proc/cpuinfo for PER_LINUX32 tasks arm64: enable CONFIG_SET_MODULE_RONX by default arm64: Remove orphaned __addr_ok() definition Revert "arm64: hugetlb: partial revert of 66b3923a1a0f"
2016-06-03Merge tag 'powerpc-4.7-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Handle RTAS delay requests in configure_bridge from Russell Currey - Refactor the configure_bridge RTAS tokens from Russell Currey - Fix definition of SIAR and SDAR registers from Thomas Huth - Use privileged SPR number for MMCR2 from Thomas Huth - Update LPCR only if it is powernv from Aneesh Kumar K.V - Fix the reference bit update when handling hash fault from Aneesh Kumar K.V - Add missing tlb flush from Aneesh Kumar K.V - Add POWER8NVL support to ibm,client-architecture-support call from Thomas Huth * tag 'powerpc-4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/pseries: Add POWER8NVL support to ibm,client-architecture-support call powerpc/mm/radix: Add missing tlb flush powerpc/mm/hash: Fix the reference bit update when handling hash fault powerpc/mm/radix: Update LPCR only if it is powernv powerpc: Use privileged SPR number for MMCR2 powerpc: Fix definition of SIAR and SDAR registers powerpc/pseries/eeh: Refactor the configure_bridge RTAS tokens powerpc/pseries/eeh: Handle RTAS delay requests in configure_bridge
2016-06-03Merge branches 'acpica-fixes', 'acpi-video' and 'acpi-processor'Rafael J. Wysocki
* acpica-fixes: ACPICA / Hardware: Fix old register check in acpi_hw_get_access_bit_width() * acpi-video: ACPI / Thermal / video: fix max_level incorrect value * acpi-processor: ACPI / processor: Avoid reserving IO regions too early
2016-06-03Merge branch 'pm-cpufreq-fixes'Rafael J. Wysocki
* pm-cpufreq-fixes: cpufreq: Fix clamp_val() usage in cpufreq_driver_fast_switch() cpufreq: intel_pstate: Downgrade print level for _PPC
2016-06-03Btrfs: deal with duplciates during extent_map insertion in btrfs_get_extentChris Mason
When dealing with inline extents, btrfs_get_extent will incorrectly try to insert a duplicate extent_map. The dup hits -EEXIST from add_extent_map, but then we try to merge with the existing one and end up trying to insert a zero length extent_map. This actually works most of the time, except when there are extent maps past the end of the inline extent. rocksdb will trigger this sometimes because it preallocates an extent and then truncates down. Josef made a script to trigger with xfs_io: #!/bin/bash xfs_io -f -c "pwrite 0 1000" inline xfs_io -c "falloc -k 4k 1M" inline xfs_io -c "pread 0 1000" -c "fadvise -d 0 1000" -c "pread 0 1000" inline xfs_io -c "fadvise -d 0 1000" inline cat inline You'll get EIOs trying to read inline after this because add_extent_map is returning EEXIST Signed-off-by: Chris Mason <clm@fb.com>
2016-06-03EDAC, sb_edac: Readd accidentally dropped Broadwell-D supportTony Luck
In commit 2c1ea4c700af ("EDAC, sb_edac: Use cpu family/model in driver detection") we switched from using PCI ids to determine which platform we are running on to using CPU model instead. I forgot that Broadwell-DE has its own distinct model number different from Broadwell-EP or -EX. Fixing this isn't just adding a line to the array of cpuids - the exising code assumed a 1:1 mapping between entries in that array and the "enum type" values. Added the type to pci_id_table structure to remove this dependency and allows two Broadwell cpu models. Signed-off-by: Tony Luck <tony.luck@intel.com> Cc: Aristeu Rozanski <arozansk@redhat.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: linux-edac <linux-edac@vger.kernel.org> Fixes: 2c1ea4c700af ("EDAC, sb_edac: Use cpu family/model in driver detection") Link: http://lkml.kernel.org/r/b3cffe40dec6dfe0235a5d52a504f0ba86a07ce7.1464902605.git.tony.luck@intel.com Signed-off-by: Borislav Petkov <bp@suse.de>
2016-06-03Merge tag 'irqchip-4.7-rc1' of ↵Thomas Gleixner
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent Merge irqchip updates from Marc Zyngier: - A number of embarassing buglets (GICv3, PIC32) - A more substential errata workaround for Cavium's GICv3 ITS (kept for post-rc1 due to its dependency on NUMA)
2016-06-03of: add vendor prefix for UniWestJoshua Clayton
United Western Technologies Corp, known primarily as UniWest, is a manufacturer of eddy current and ultrasonic testing equipment. Signed-off-by: Joshua Clayton <stillcompiling@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-06-03dt: bindings: fix documentation for MARVELL's bt-sd8xxx wireless deviceWei-Ning Huang
The property marvell,wakeup-pin and marvell,wakeup-gap-ms are read as u16 in the driver. Fix documentation and example accordingly. Signed-off-by: Wei-Ning Huang <wnhuang@chromium.org> Signed-off-by: Rob Herring <robh@kernel.org>
2016-06-03of: add missing const for of_parse_phandle_with_args() in !CONFIG_OFKuninori Morimoto
commit 93c667ca2598bd84f1bd3f2fa176af69707699fe ("of: *node argument to of_parse_phandle_with_args should be const") changed to const for struct device node *np, but it cares CONFIG_OF case only, !CONFIG_OF case need it too. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-06-03of: silence warnings due to max() usageStephen Rothwell
pageblock_order can be (at least) an unsigned int or an unsigned long depending on the kernel config and architecture, so use max_t(unsigned long ...) when comparing it. fixes these warnings: In file included from include/linux/list.h:8:0, from include/linux/kobject.h:20, from include/linux/of.h:21, from drivers/of/of_reserved_mem.c:17: drivers/of/of_reserved_mem.c: In function ‘__reserved_mem_alloc_size’: include/linux/kernel.h:748:17: warning: comparison of distinct pointer types lacks a cast (void) (&_max1 == &_max2); \ ^ include/linux/kernel.h:747:9: note: in definition of macro ‘max’ typeof(y) _max2 = (y); \ ^ drivers/of/of_reserved_mem.c:131:48: note: in expansion of macro ‘max’ align = max(align, (phys_addr_t)PAGE_SIZE << max(MAX_ORDER - 1, pageblock_ord ^ include/linux/kernel.h:748:17: warning: comparison of distinct pointer types lacks a cast (void) (&_max1 == &_max2); \ ^ include/linux/kernel.h:747:21: note: in definition of macro ‘max’ typeof(y) _max2 = (y); \ ^ drivers/of/of_reserved_mem.c:131:48: note: in expansion of macro ‘max’ align = max(align, (phys_addr_t)PAGE_SIZE << max(MAX_ORDER - 1, pageblock_ord ^ Fixes: 1cc8e3458b51 ("drivers: of: of_reserved_mem: fixup the alignment with CMA setup") Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Rob Herring <robh@kernel.org>
2016-06-03drivers: of: of_reserved_mem: fixup the CMA alignment not to affect dma-coherentJaewon
There was an alignment mismatch issue for CMA and it was fixed by commit 1cc8e3458b51 ("drivers: of: of_reserved_mem: fixup the alignment with CMA setup"). However the way of the commit considers not only dma-contiguous(CMA) but also dma-coherent which has no that requirement. This patch checks more to distinguish dma-contiguous(CMA) from dma-coherent. Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com> Acked-by: Jason Liu <r64343@freescale.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> [robh: remove erroneous opening bracket] Signed-off-by: Rob Herring <robh@kernel.org>
2016-06-03of: irq: fix of_irq_get[_byname]() kernel-docSergei Shtylyov
The kernel-doc for the of_irq_get[_byname]() is clearly inadequate in describing the return values -- of_irq_get_byname() is documented better than of_irq_get() but it still doesn't mention that 0 is returned iff irq_create_of_mapping() fails (it doesn't return an error code in this case). Document all possible return value variants, making the writing of the word "IRQ" consistent, while at it... Fixes: 9ec36cafe43b ("of/irq: do irq resolution in platform_get_irq") Fixes: ad69674e73a1 ("of/irq: do irq resolution in platform_get_irq_byname()") Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> CC: stable@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
2016-06-03arm64: fix alignment when RANDOMIZE_TEXT_OFFSET is enabledMark Rutland
With ARM64_64K_PAGES and RANDOMIZE_TEXT_OFFSET enabled, we hit the following issue on the boot: kernel BUG at arch/arm64/mm/mmu.c:480! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 4.6.0 #310 Hardware name: ARM Juno development board (r2) (DT) task: ffff000008d58a80 ti: ffff000008d30000 task.ti: ffff000008d30000 PC is at map_kernel_segment+0x44/0xb0 LR is at paging_init+0x84/0x5b0 pc : [<ffff000008c450b4>] lr : [<ffff000008c451a4>] pstate: 600002c5 Call trace: [<ffff000008c450b4>] map_kernel_segment+0x44/0xb0 [<ffff000008c451a4>] paging_init+0x84/0x5b0 [<ffff000008c42728>] setup_arch+0x198/0x534 [<ffff000008c40848>] start_kernel+0x70/0x388 [<ffff000008c401bc>] __primary_switched+0x30/0x74 Commit 7eb90f2ff7e3 ("arm64: cover the .head.text section in the .text segment mapping") removed the alignment between the .head.text and .text sections, and used the _text rather than the _stext interval for mapping the .text segment. Prior to this commit _stext was always section aligned and didn't cause any issue even when RANDOMIZE_TEXT_OFFSET was enabled. Since that alignment has been removed and _text is used to map the .text segment, we need ensure _text is always page aligned when RANDOMIZE_TEXT_OFFSET is enabled. This patch adds logic to TEXT_OFFSET fuzzing to ensure that the offset is always aligned to the kernel page size. To ensure this, we rely on the PAGE_SHIFT being available via Kconfig. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reported-by: Sudeep Holla <sudeep.holla@arm.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Fixes: 7eb90f2ff7e3 ("arm64: cover the .head.text section in the .text segment mapping") Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-06-03arm64: move {PAGE,CONT}_SHIFT into KconfigMark Rutland
In some cases (e.g. the awk for CONFIG_RANDOMIZE_TEXT_OFFSET) we would like to make use of PAGE_SHIFT outside of code that can include the usual header files. Add a new CONFIG_ARM64_PAGE_SHIFT for this, likewise with ARM64_CONT_SHIFT for consistency. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-06-03arm64: mm: dump: log span levelMark Rutland
The page table dump code logs spans of entries at the same level (pgd/pud/pmd/pte) which have the same attributes. While we log the (decoded) attributes, we don't log the level, which leaves the output ambiguous and/or confusing in some cases. For example: 0xffff800800000000-0xffff800980000000 6G RW NX SHD AF BLK UXN MEM/NORMAL If using 4K pages, this may describe a span of 6 1G block entries at the PGD/PUD level, or 3072 2M block entries at the PMD level. This patch adds the page table level to each output line, removing this ambiguity. For the example above, this will produce: 0xffffffc800000000-0xffffffc980000000 6G PUD RW NX SHD AF BLK UXN MEM/NORMAL When 3 level tables are in use, and we use the asm-generic/nopud.h definitions, the dump code treats each entry in the PGD as a 1 element table at the PUD level, and logs spans as being PUDs, which can be confusing. To counteract this, the "PUD" mnemonic is replaced with "PGD" when CONFIG_PGTABLE_LEVELS <= 3. Likewise for "PMD" when CONFIG_PGTABLE_LEVELS <= 2. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Huang Shijie <shijie.huang@arm.com> Cc: Laura Abbott <labbott@fedoraproject.org> Cc: Steve Capper <steve.capper@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-06-03arm64: update stale PAGE_OFFSET commentMark Rutland
Commit ab893fb9f1b17f02 ("arm64: introduce KIMAGE_VADDR as the virtual base of the kernel region") logically split KIMAGE_VADDR from PAGE_OFFSET, and since commit f9040773b7bbbd9e ("arm64: move kernel image to base of vmalloc area") the two have been distinct values. Unfortunately, neither commit updated the comment above these definitions, which now erroneously states that PAGE_OFFSET is the start of the kernel image rather than the start of the linear mapping. This patch fixes said comment, and introduces an explanation of KIMAGE_VADDR. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-06-03drivers/perf: arm_pmu: Avoid leaking pmu->irq_affinity on errorJulien Grall
pmu->irq_affinity will not be freed if an error occurred within arm_pmu_device_probe after of_pmu_irq_cfg has been called. Note that in the case of_pmu_irq_cfg is returning an error, pmu->irq_affinity will not be set, but it should be NULL as pmu was kzalloc'd. Therefore the result kfree(NULL) is benign. Signed-off-by: Julien Grall <julien.grall@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-06-03drivers/perf: arm_pmu: Defer the setting of __oprofile_cpu_pmuJulien Grall
The global variable __oprofile_cpu_pmu is set before the PMU is fully initialized. If an error occurs before the end of the initialization, the PMU will be freed and the variable will contain an invalid pointer. This will result in a kernel crash when perf will be used. Fix it by moving the setting of __oprofile_cpu_pmu when the PMU is fully initialized (i.e when it is no longer possible to fail). Cc: <stable@vger.kernel.org> Signed-off-by: Julien Grall <julien.grall@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-06-03drivers/perf: arm_pmu: Fix reference count of a device_node in of_pmu_irq_cfgJulien Grall
The only function called by of_pmu_irq_cfg that will increment the reference count on dn is of_parse_phandle. Each time we successfully parse a possible CPU from an interrupt-affinity property, we increment the refcount of that CPU node once via of_parse_handle. After validating the CPU is possible, we decrement the refcount once. Subsequently, we decrement the refcount again, either as part of an early break if we don't have a matching SPI, or as part of the end of the loop body. This will lead to decrementing twice the refcounnt. Remove the second pairs of call to of_node_put as nobody is using dn between the first and second call to of_node_put. Signed-off-by: Julien Grall <julien.grall@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-06-03arm64: report CPU number in bad_modeMark Rutland
If we take an exception we don't expect (e.g. SError), we report this in the bad_mode handler with pr_crit. Depending on the configured log level, we may or may not log additional information in functions called subsequently. Notably, the messages in dump_stack (including the CPU number) are printed with KERN_DEFAULT and may not appear. Some exceptions have an IMPLEMENTATION DEFINED ESR_ELx.ISS encoding, and knowing the CPU number is crucial to correctly decode them. To ensure that this is always possible, we should log the CPU number along with the ESR_ELx value, so we are not reliant on subsequent logs or additional printk configuration options. This patch logs the CPU number in bad_mode such that it is possible for a developer to decode these exceptions, provided access to sufficient documentation. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reported-by: Al Grant <Al.Grant@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Martin <dave.martin@arm.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-06-03EDAC: Fix workqueues poll period resettingNicholas Krause
After the workqueue cleanup, we're registering workqueues based on the presence of an ->edac_check function. When that is the case, we're setting OP_RUNNING_POLL. But we forgot to check that in edac_mc_reset_delay_period(), leading to: BUG: unable to handle kernel paging request at 0000000000015d10 IP: [ .. ] queued_spin_lock_slowpath PGD 3ffcc8067 PUD 3ffc56067 PMD 0 Oops: 0002 [#1] SMP Modules linked in: ... CPU: 1 PID: 2792 Comm: edactest Not tainted 4.6.0-dirty #1 Hardware name: HP ProLiant MicroServer, BIOS O41 10/01/2013 Stack: Call Trace: ? _raw_spin_lock_irqsave ? lock_timer_base.isra.34 ? del_timer ? try_to_grab_pending ? mod_delayed_work_on ? edac_mc_reset_delay_period ? edac_set_poll_msec ? param_attr_store ? module_attr_store ? kernfs_fop_write ? __vfs_write ? __vfs_read ? __alloc_fd ? vfs_write ? SyS_write ? entry_SYSCALL_64_fastpath Code: RIP [ .. ] queued_spin_lock_slowpath RSP <> CR2: 0000000000015d10 ---[ end trace 3f286bc71cca15d1 ]--- Kernel panic - not syncing: Fatal exception Fix it. Signed-off-by: Nicholas Krause <xerofoify@gmail.com> Cc: <stable@vger.kernel.org> # 4.5 Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/1463697958-13406-1-git-send-email-xerofoify@gmail.com [ Rewrite commit message. ] Signed-off-by: Borislav Petkov <bp@suse.de>
2016-06-03brcmfmac: add eth_type_trans back for PCIe full dongleFranky Lin
A regression was introduced in commit 9c349892ccc9 ("brcmfmac: revise handling events in receive path") which moves eth_type_trans() call to brcmf_rx_frame(). Msgbuf layer doesn't use brcmf_rx_frame() but invokes brcmf_netif_rx() directly. In such case the Ethernet header was not stripped out resulting in null pointer dereference in the networking stack. BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 IP: [<ffffffff814c3ce6>] enqueue_to_backlog+0x56/0x260 PGD 0 Oops: 0000 [#1] PREEMPT SMP Modules linked in: fuse ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype [...] rtsx_pci scsi_mod usbcore usb_common i8042 serio nvme nvme_core CPU: 7 PID: 1340 Comm: irq/136-brcmf_p Not tainted 4.7.0-rc1-mainline #1 Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.02.00 04/07/2016 task: ffff8804a0c5bd00 ti: ffff88049e124000 task.ti: ffff88049e124000 RIP: 0010:[<ffffffff814c3ce6>] [<ffffffff814c3ce6>] enqueue_to_backlog+0x56/0x260 RSP: 0018:ffff88049e127ca0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff8804bddd7c40 RCX: 000000000000002f RDX: 0000000000000000 RSI: 0000000000000007 RDI: ffff8804bddd7d4c RBP: ffff88049e127ce8 R08: 0000000000000000 R09: 0000000000000000 R10: ffff8804bddd12c0 R11: 000000000000149e R12: 0000000000017c40 R13: ffff88049e127d08 R14: ffff8804a9bd6d00 R15: ffff8804bddd7d4c FS: 0000000000000000(0000) GS:ffff8804bddc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000048 CR3: 0000000001806000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8804bdddad00 ffff8804ad089e00 0000000000000000 0000000000000282 0000000000000000 ffff8804a9bd6d00 ffff8804a1b27e00 ffff8804a9bd6d00 ffff88002ee88000 ffff88049e127d28 ffffffff814c3f3b ffffffff81311fc3 Call Trace: [<ffffffff814c3f3b>] netif_rx_internal+0x4b/0x170 [<ffffffff81311fc3>] ? swiotlb_tbl_unmap_single+0xf3/0x120 [<ffffffff814c5467>] netif_rx_ni+0x27/0xc0 [<ffffffffa08519e9>] brcmf_netif_rx+0x49/0x70 [brcmfmac] [<ffffffffa08564d4>] brcmf_msgbuf_process_rx+0x2b4/0x570 [brcmfmac] [<ffffffff81020017>] ? __xen_set_pgd_hyper+0x57/0xd0 [<ffffffff810d60b0>] ? irq_forced_thread_fn+0x70/0x70 [<ffffffffa0857381>] brcmf_proto_msgbuf_rx_trigger+0x31/0xe0 [brcmfmac] [<ffffffffa0861e8f>] brcmf_pcie_isr_thread+0x7f/0x110 [brcmfmac] [<ffffffff810d60d0>] irq_thread_fn+0x20/0x50 [<ffffffff810d63ad>] irq_thread+0x12d/0x1c0 [<ffffffff815d07d5>] ? __schedule+0x2f5/0x7a0 [<ffffffff810d61d0>] ? wake_threads_waitq+0x30/0x30 [<ffffffff810d6280>] ? irq_thread_dtor+0xb0/0xb0 [<ffffffff81098ea8>] kthread+0xd8/0xf0 [<ffffffff815d4b7f>] ret_from_fork+0x1f/0x40 [<ffffffff81098dd0>] ? kthread_worker_fn+0x170/0x170 Code: 1c f5 60 9a 8e 81 9c 58 0f 1f 44 00 00 48 89 45 d0 fa 66 0f 1f 44 00 00 4c 8d bb 0c 01 00 00 4c 89 ff e8 5e 08 11 00 49 8b 56 20 <48> 8b 52 48 83 e2 01 74 10 8b 8b 08 01 00 00 8b 15 59 c5 42 00 RIP [<ffffffff814c3ce6>] enqueue_to_backlog+0x56/0x260 RSP <ffff88049e127ca0> CR2: 0000000000000048 Fixes: 9c349892ccc9 ("brcmfmac: revise handling events in receive path") Reported-by: Rafal Milecki <zajec5@gmail.com> Reported-by: Grey Christoforo <grey@christoforo.net> Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com> Reviewed-by: Arend Van Spriel <arend@broadcom.com> Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com> Signed-off-by: Franky Lin <franky.lin@broadcom.com> [arend@broadcom.com: rephrased the commit message] Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-06-03EDAC, sb_edac: Fix rank lookup on BroadwellTony Luck
Broadwell made a small change to the rank target register moving the target rank ID field up from bits 16:19 to bits 20:23. Also found that the offset field grew by one bit in the IVY_BRIDGE to HASWELL transition, so fix the RIR_OFFSET() macro too. Signed-off-by: Tony Luck <tony.luck@intel.com> Cc: stable@vger.kernel.org # v3.19+ Cc: Aristeu Rozanski <arozansk@redhat.com> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/2943fb819b1f7e396681165db9c12bb3df0e0b16.1464735623.git.tony.luck@intel.com Signed-off-by: Borislav Petkov <bp@suse.de>
2016-06-03efi/arm: Fix the format of EFI debug messagesDennis Chen
When both EFI and memblock debugging is enabled on the kernel command line: 'efi=debug memblock=debug' .. the debug messages for early_con look the following way: [ 0.000000] efi: 0x0000e1050000-0x0000e105ffff [Memory Mapped I/O |RUN| | | | | | | | | | |UC] [ 0.000000] efi: 0x0000e1300000-0x0000e1300fff [Memory Mapped I/O |RUN| | | | | | | | | | |UC] [ 0.000000] efi: 0x0000e8200000-0x0000e827ffff [Memory Mapped I/O |RUN| | | | | | | | | | |UC] [ 0.000000] efi: 0x008000000000-0x008001e7ffff [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC] [ 0.000000] memblock_add: [0x00008000000000-0x00008001e7ffff] flags 0x0 early_init_dt_add_memory_arch+0x54/0x5c [ 0.000000] * ... Note the misplaced '*' line, which happened because the memblock debug message was printed while the EFI debug message was still being constructed.. This patch fixes the output to be the expected: [ 0.000000] efi: 0x0000e1050000-0x0000e105ffff [Memory Mapped I/O |RUN| | | | | | | | | | |UC] [ 0.000000] efi: 0x0000e1300000-0x0000e1300fff [Memory Mapped I/O |RUN| | | | | | | | | | |UC] [ 0.000000] efi: 0x0000e8200000-0x0000e827ffff [Memory Mapped I/O |RUN| | | | | | | | | | |UC] [ 0.000000] efi: 0x008000000000-0x008001e7ffff [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC]* [ 0.000000] memblock_add: [0x00008000000000-0x00008001e7ffff] flags 0x0 early_init_dt_add_memory_arch+0x54/0x5c ... Note how the '*' is now in the proper EFI debug message line. Signed-off-by: Dennis Chen <dennis.chen@arm.com> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Salter <msalter@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steve Capper <steve.capper@arm.com> Cc: Steve McIntyre <steve@einval.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/1464690224-4503-3-git-send-email-matt@codeblueprint.co.uk [ Made the changelog more readable. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-03efi: Fix for_each_efi_memory_desc_in_map() for empty memmapsVitaly Kuznetsov
Commit: 78ce248faa3c ("efi: Iterate over efi.memmap in for_each_efi_memory_desc()") introduced a regression for systems booted with the 'noefi' kernel option. In particular, I observed an early kernel hang in efi_find_mirror()'s for_each_efi_memory_desc() call. As we don't have efi memmap on this system we enter this iterator with the following parameters: efi.memmap.map = 0, efi.memmap.map_end = 0, efi.memmap.desc_size = 28 ... then for_each_efi_memory_desc_in_map() does the following comparison: (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); ... where md = 0, (m)->map_end = 0 and (m)->desc_size = 28 but when we subtract something from a NULL pointer wrap around happens and we end up returning invalid pointer and crash. Fix it by using the correct pointer arithmetics. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Salter <msalter@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Fixes: 78ce248faa3c ("efi: Iterate over efi.memmap in for_each_efi_memory_desc()") Link: http://lkml.kernel.org/r/1464690224-4503-2-git-send-email-matt@codeblueprint.co.uk [ Made the changelog more readable. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-03ALSA: hda - Fix headset mic detection problem for Dell machineAceLan Kao
Add the pin configuration value of this machine into the pin_quirk table to make DELL1_MIC_NO_PRESENCE apply to this machine. Signed-off-by: AceLan Kao <acelan.kao@canonical.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-03perf/x86/intel/uncore: Remove SBOX support for Broadwell serverKan Liang
There was a report that on certain Broadwell-EP systems writing any bit of the SBOX PMU initialization MSR would #GP at boot. This did not happen on all systems. My test systems booted fine. Considering both DE and EP may have such issues, this patch removes SBOX support for all Broadwell platforms for now. Reported-and-tested-by: Mark van Dijk <mark@voidzero.net> Signed-off-by: Kan Liang <kan.liang@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1464347540-5763-1-git-send-email-kan.liang@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-03locking/ww_mutex: Report recursive ww_mutex locking earlyChris Wilson
Recursive locking for ww_mutexes was originally conceived as an exception. However, it is heavily used by the DRM atomic modesetting code. Currently, the recursive deadlock is checked after we have queued up for a busy-spin and as we never release the lock, we spin until kicked, whereupon the deadlock is discovered and reported. A simple solution for the now common problem is to move the recursive deadlock discovery to the first action when taking the ww_mutex. Suggested-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1464293297-19777-1-git-send-email-chris@chris-wilson.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-03locking/seqcount: Re-fix raw_read_seqcount_latch()Peter Zijlstra
Commit 50755bc1c305 ("seqlock: fix raw_read_seqcount_latch()") broke raw_read_seqcount_latch(). If you look at the comment that was modified; the thing that changes is the seq count, not the latch pointer. * void latch_modify(struct latch_struct *latch, ...) * { * smp_wmb(); <- Ensure that the last data[1] update is visible * latch->seq++; * smp_wmb(); <- Ensure that the seqcount update is visible * * modify(latch->data[0], ...); * * smp_wmb(); <- Ensure that the data[0] update is visible * latch->seq++; * smp_wmb(); <- Ensure that the seqcount update is visible * * modify(latch->data[1], ...); * } * * The query will have a form like: * * struct entry *latch_query(struct latch_struct *latch, ...) * { * struct entry *entry; * unsigned seq, idx; * * do { * seq = lockless_dereference(latch->seq); So here we have: seq = READ_ONCE(latch->seq); smp_read_barrier_depends(); Which is exactly what we want; the new code: seq = ({ p = READ_ONCE(latch); smp_read_barrier_depends(); p })->seq; is just wrong; because it looses the volatile read on seq, which can now be torn or worse 'optimized'. And the read_depend barrier is also placed wrong, we want it after the load of seq, to match the above data[] up-to-date wmb()s. Such that when we dereference latch->data[] below, we're guaranteed to observe the right data. * * idx = seq & 0x01; * entry = data_query(latch->data[idx], ...); * * smp_rmb(); * } while (seq != latch->seq); * * return entry; * } So yes, not passing a pointer is not pretty, but the code was correct, and isn't anymore now. Change to explicit READ_ONCE()+smp_read_barrier_depends() to avoid confusion and allow strict lockless_dereference() checking. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 50755bc1c305 ("seqlock: fix raw_read_seqcount_latch()") Link: http://lkml.kernel.org/r/20160527111117.GL3192@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-03KEYS: Add placeholder for KDF usage with DHStephan Mueller
The values computed during Diffie-Hellman key exchange are often used in combination with key derivation functions to create cryptographic keys. Add a placeholder for a later implementation to configure a key derivation function that will transform the Diffie-Hellman result returned by the KEYCTL_DH_COMPUTE command. [This patch was stripped down from a patch produced by Mat Martineau that had a bug in the compat code - so for the moment Stephan's patch simply requires that the placeholder argument must be NULL] Original-signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2016-06-03drm/omap: fix unused variable warning.Dave Airlie
Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-06-03Merge tag 'omapdrm-4.7-fixes' of ↵Dave Airlie
git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-fixes omapdrm fixes for 4.7 * multiple compile break fixes for missing includes, bad kconfig dependencies. * remove regulator API misuse causing deprecation warnings * OMAP5 HDMI fixes for DDC and AVI infoframe * OMAP4 HDMI fix for CEC * tag 'omapdrm-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: drm/omap: include gpio/consumer.h where needed drm/omap: include linux/seq_file.h where needed Revert "drm/omap: no need to select OMAP2_DSS" drm/omap: Remove regulator API abuse OMAPDSS: HDMI5: Change DDC timings OMAPDSS: HDMI5: Fix AVI infoframe drm/omap: fix OMAP4 hdmi_core_powerdown_disable() drm/omap: Fix missing includes drm/omapdrm: include pinctrl/consumer.h where needed
2016-06-02rds: fix an infoleak in rds_inc_info_copyKangjie Lu
The last field "flags" of object "minfo" is not initialized. Copying this object out may leak kernel stack data. Assign 0 to it to avoid leak. Signed-off-by: Kangjie Lu <kjlu@gatech.edu> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-02tipc: fix an infoleak in tipc_nl_compat_link_dumpKangjie Lu
link_info.str is a char array of size 60. Memory after the NULL byte is not initialized. Sending the whole object out can cause a leak. Signed-off-by: Kangjie Lu <kjlu@gatech.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-03Merge tag 'imx-drm-next-2016-06-01' of ↵Dave Airlie
git://git.pengutronix.de/git/pza/linux into drm-fixes imx-drm updates - add support for reading LVDS panel EDID over DDC - enable UYVY/VYUY support - add support for pixel clock polarity configuration - honor the native-mode DT property for LVDS - various fixes and cleanups * tag 'imx-drm-next-2016-06-01' of git://git.pengutronix.de/git/pza/linux: drm/imx: plane: Don't set plane->crtc in ipu_plane_update() drm/imx: ipuv3-plane: Constify ipu_plane_funcs drm/imx: imx-ldb: honor 'native-mode' property when selecting video mode from DT drm/imx: parallel-display: remove dead code drm/imx: use bus_flags for pixel clock polarity drm/imx: ipuv3-plane: enable UYVY and VYUY formats drm/imx: parallel-display: use of_graph_get_endpoint_by_regs helper drm/imx: imx-ldb: use of_graph_get_endpoint_by_regs helper dt-bindings: imx: ldb: Add ddc-i2c-bus property drm/imx: imx-ldb: Add DDC support
2016-06-03Merge tag 'drm-atmel-hlcdc-fixes/for-4.7-rc2' of ↵Dave Airlie
github.com:bbrezillon/linux-at91 into drm-fixes Two trivial bugfixes for the atmel-hlcdc driver. The first one is making use of __drm_atomic_helper_crtc_destroy_state() instead of duplicating its logic in atmel_hlcdc_crtc_reset() and risking memory leaks if other objects are added to the common CRTC state. The second one is fixing a possible NULL pointer dereference. * tag 'drm-atmel-hlcdc-fixes/for-4.7-rc2' of github.com:bbrezillon/linux-at91: drm: atmel-hlcdc: fix a NULL check drm: atmel-hlcdc: fix atmel_hlcdc_crtc_reset() implementation
2016-06-03Merge branch 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld into drm-fixesDave Airlie
"I have accumulated some cleanup patches for HDLCD, partly triggered by Daniel Vetter's work on non-blocking atomic operations, that I would like to integrate into v4.7. My first patch is important for the newly enabled hibernate option for AArch64 on Juno, the others are fixing behaviour in HDLCD and adding a debugfs entry to help track the underlying framebuffer usage. I'm also taking one of Daniel's patches from his non-blocking series to help with the integration of his patches later." * 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld: drm: hdlcd: Add information about the underlying framebuffers in debugfs drm: hdlcd: Cleanup the atomic plane operations drm/hdlcd: Fix up crtc_state->event handling drm: hdlcd: Revamp runtime power management
2016-06-02Possible problem with e6afc8ac ("udp: remove headers from UDP packets before ↵Eric Dumazet
queueing") Paul Moore tracked a regression caused by a recent commit, which mistakenly assumed that sk_filter() could be avoided if socket had no current BPF filter. The intent was to avoid udp_lib_checksum_complete() overhead. But sk_filter() also checks skb_pfmemalloc() and security_sock_rcv_skb(), so better call it. Fixes: e6afc8ace6dd ("udp: remove headers from UDP packets before queueing") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Paul Moore <paul@paul-moore.com> Tested-by: Paul Moore <paul@paul-moore.com> Tested-by: Stephen Smalley <sds@tycho.nsa.gov> Cc: samanthakumar <samanthakumar@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-02MAINTAINERS: DeviceTree maintainer updatesRob Herring
Grant stepped down as kernel DT maintainer and his linaro.org email will be bouncing soon, so remove him now. Pawel, Ian and Kumar either said they don't want to remain maintainers or didn't reply, so removing them as binding maintainers. Update the DT git tree to mine. Grant's has not been active for a while now. I'm actively using patchwork for binding review tracking, so add its URL. Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-06-02Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Radim Krčmář: "ARM: - two fixes for 4.6 vgic [Christoffer] (cc stable) - six fixes for 4.7 vgic [Marc] x86: - six fixes from syzkaller reports [Paolo] (two of them cc stable) - allow OS X to boot [Dmitry] - don't trust compilers [Nadav]" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: fix OOPS after invalid KVM_SET_DEBUGREGS KVM: x86: avoid vmalloc(0) in the KVM_SET_CPUID KVM: irqfd: fix NULL pointer dereference in kvm_irq_map_gsi KVM: fail KVM_SET_VCPU_EVENTS with invalid exception number KVM: x86: avoid vmalloc(0) in the KVM_SET_CPUID kvm: x86: avoid warning on repeated KVM_SET_TSS_ADDR KVM: Handle MSR_IA32_PERF_CTL KVM: x86: avoid write-tearing of TDP KVM: arm/arm64: vgic-new: Removel harmful BUG_ON arm64: KVM: vgic-v3: Relax synchronization when SRE==1 arm64: KVM: vgic-v3: Prevent the guest from messing with ICC_SRE_EL1 arm64: KVM: Make ICC_SRE_EL1 access return the configured SRE value KVM: arm/arm64: vgic-v3: Always resample level interrupts KVM: arm/arm64: vgic-v2: Always resample level interrupts KVM: arm/arm64: vgic-v3: Clear all dirty LRs KVM: arm/arm64: vgic-v2: Clear all dirty LRs
2016-06-02cpufreq: Unexport cpufreq_frequency_table_cpuinfo()Viresh Kumar
All cpufreq drivers with a freq-table are migrated to use cpufreq_table_validate_and_show() long back and the routine cpufreq_frequency_table_cpuinfo() isn't used outside of cpufreq core now. Unexport it and update Documentation as well. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-06-02cpufreq: stats: Make the stats code non-modularRafael J. Wysocki
The modularity of cpufreq_stats is quite problematic. First off, the usage of policy notifiers for the initialization and cleanup in the cpufreq_stats module is inherently racy with respect to CPU offline/online and the initialization and cleanup of the cpufreq driver. Second, fast frequency switching (used by the schedutil governor) cannot be enabled if any transition notifiers are registered, so if the cpufreq_stats module (that registers a transition notifier for updating transition statistics) is loaded, the schedutil governor cannot use fast frequency switching. On the other hand, allowing cpufreq_stats to be built as a module doesn't really add much value. Arguably, there's not much reason for that code to be modular at all. For the above reasons, make the cpufreq stats code non-modular, modify the core to invoke functions provided by that code directly and drop the notifiers from it. Make the stats sysfs attributes appear empty if fast frequency switching is enabled as the statistics will not be updated in that case anyway (and returning -EBUSY from those attributes breaks powertop). While at it, clean up Kconfig help for the CPU_FREQ_STAT and CPU_FREQ_STAT_DETAILS options. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
2016-06-02cpufreq: Use clamp_val() in __cpufreq_driver_target()Viresh Kumar
Use clamp_val() instead of open coding it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-06-02cpufreq: Send START policy notification after sending CREATEViresh Kumar
The sequence got a bit wrong as we are sending CPUFREQ_START notifications even before we have sent CPUFREQ_CREATE_POLICY. Fix it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>