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2013-09-11kernel-wide: fix missing validations on __get/__put/__copy_to/__copy_from_user()Mathieu Desnoyers2-6/+11
I found the following pattern that leads in to interesting findings: grep -r "ret.*|=.*__put_user" * grep -r "ret.*|=.*__get_user" * grep -r "ret.*|=.*__copy" * The __put_user() calls in compat_ioctl.c, ptrace compat, signal compat, since those appear in compat code, we could probably expect the kernel addresses not to be reachable in the lower 32-bit range, so I think they might not be exploitable. For the "__get_user" cases, I don't think those are exploitable: the worse that can happen is that the kernel will copy kernel memory into in-kernel buffers, and will fail immediately afterward. The alpha csum_partial_copy_from_user() seems to be missing the access_ok() check entirely. The fix is inspired from x86. This could lead to information leak on alpha. I also noticed that many architectures map csum_partial_copy_from_user() to csum_partial_copy_generic(), but I wonder if the latter is performing the access checks on every architectures. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11mm: make sure _PAGE_SWP_SOFT_DIRTY bit is not set on present pteCyrill Gorcunov2-15/+22
_PAGE_SOFT_DIRTY bit should never be set on present pte so add VM_BUG_ON to catch any potential future abuse. Also add a comment on _PAGE_SWP_SOFT_DIRTY definition explaining scope of its usage. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Pavel Emelyanov <xemul@parallels.com> Acked-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11mm: migrate: check movability of hugepage in unmap_and_move_huge_page()Naoya Horiguchi11-0/+63
Currently hugepage migration works well only for pmd-based hugepages (mainly due to lack of testing,) so we had better not enable migration of other levels of hugepages until we are ready for it. Some users of hugepage migration (mbind, move_pages, and migrate_pages) do page table walk and check pud/pmd_huge() there, so they are safe. But the other users (softoffline and memory hotremove) don't do this, so without this patch they can try to migrate unexpected types of hugepages. To prevent this, we introduce hugepage_migration_support() as an architecture dependent check of whether hugepage are implemented on a pmd basis or not. And on some architecture multiple sizes of hugepages are available, so hugepage_migration_support() also checks hugepage size. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Rik van Riel <riel@redhat.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11mm: vmstats: track TLB flush stats on UP tooDave Hansen3-9/+34
The previous patch doing vmstats for TLB flushes ("mm: vmstats: tlb flush counters") effectively missed UP since arch/x86/mm/tlb.c is only compiled for SMP. UP systems do not do remote TLB flushes, so compile those counters out on UP. arch/x86/kernel/cpu/mtrr/generic.c calls __flush_tlb() directly. This is probably an optimization since both the mtrr code and __flush_tlb() write cr4. It would probably be safe to make that a flush_tlb_all() (and then get these statistics), but the mtrr code is ancient and I'm hesitant to touch it other than to just stick in the counters. [akpm@linux-foundation.org: tweak comments] Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11mm: vmstats: tlb flush countersDave Hansen1-4/+14
I was investigating some TLB flush scaling issues and realized that we do not have any good methods for figuring out how many TLB flushes we are doing. It would be nice to be able to do these in generic code, but the arch-independent calls don't explicitly specify whether we actually need to do remote flushes or not. In the end, we really need to know if we actually _did_ global vs. local invalidations, so that leaves us with few options other than to muck with the counters from arch-specific code. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11Merge branch 'for-linus' of ↵Linus Torvalds20-122/+117
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull more s390 updates from Heiko Carstens: "This includes one bpf/jit bug fix where the jit compiler could sometimes write generated code out of bounds of the allocated memory area. The rest of the patches are only cleanups and minor improvements" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/irq: reduce size of external interrupt handler hash array s390/compat,uid16: use current_cred() s390/ap_bus: use and-mask instead of a cast s390/ftrace: avoid pointer arithmetics with function pointers s390: make various functions static, add declarations to header files s390/compat signal: add couple of __force annotations s390/mm: add __releases()/__acquires() annotations to gmap_alloc_table() s390: keep Kconfig sorted s390/irq: rework irq subclass handling s390/irq: use hlists for external interrupt handler array s390/dumpstack: convert print_symbol to %pSR s390/perf: Remove print_hex_dump_bytes() debug output s390: update defconfig s390/bpf,jit: fix address randomization
2013-09-10Merge branch 'merge' of ↵Linus Torvalds4-14/+34
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc fixes from Ben Herrenschmidt: "Here are a handful of small powerpc fixes. A couple of section mismatches (always worth fixing), a missing export of a new symbol causing build failures of modules, a page fault deadlock fix (interestingly that bug has been around for a LONG time, though it seems to be more easily triggered by KVM) and fixing pseries default idle loop in the absence of the cpuidle drivers (such as during boot)" * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Default arch idle could cede processor on pseries fbdev/ps3fb: Fix section mismatch warning for ps3fb_probe powerpc: Fix section mismatch warning for prom_rtas_call powerpc: Fix possible deadlock on page fault powerpc: Export cpu_to_chip_id() to fix build error
2013-09-10Merge tag 'stable/for-linus-3.12-rc0-tag-two' of ↵Linus Torvalds5-48/+50
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull Xen bug-fixes from Konrad Rzeszutek Wilk: "This pull I usually do after rc1 is out but because we have a nice amount of fixes, some bootup related fixes for ARM, and it is early in the cycle we figured to do it now to help with tracking of potential regressions. The simple ones are the ARM ones - one of the patches fell through the cracks, other fixes a bootup issue (unconditionally using Xen functions). Then a fix for a regression causing preempt count being off (patch causing this went in v3.12). Lastly are the fixes to make Xen PVHVM guests use PV ticketlocks (Xen PV already does). The enablement of that was supposed to be part of the x86 spinlock merge in commit 816434ec4a67 ("The biggest change here are paravirtualized ticket spinlocks (PV spinlocks), which bring a nice speedup on various benchmarks...") but unfortunatly it would cause hang when booting Xen PVHVM guests. Yours truly got all of the bugs fixed last week and they (six of them) are included in this pull. Bug-fixes: - Boot on ARM without using Xen unconditionally - On Xen ARM don't run cpuidle/cpufreq - Fix regression in balloon driver, preempt count warnings - Fixes to make PVHVM able to use pv ticketlock. - Revert Xen PVHVM disabling pv ticketlock (aka, re-enable pv ticketlocks)" * tag 'stable/for-linus-3.12-rc0-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/spinlock: Don't use __initdate for xen_pv_spin Revert "xen/spinlock: Disable IRQ spinlock (PV) allocation on PVHVM" xen/spinlock: Don't setup xen spinlock IPI kicker if disabled. xen/smp: Update pv_lock_ops functions before alternative code starts under PVHVM xen/spinlock: We don't need the old structure anymore xen/spinlock: Fix locking path engaging too soon under PVHVM. xen/arm: disable cpuidle and cpufreq when linux is running as dom0 xen/p2m: Don't call get_balloon_scratch_page() twice, keep interrupts disabled for multicalls ARM: xen: only set pm function ptrs for Xen guests
2013-09-10Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds1-0/+154
Pull drm fixes from Dave Airlie: "Daniel had some fixes queued up, that were delayed, the stolen memory ones and vga arbiter ones are quite useful, along with his usual bunch of stuff, nothing for HSW outputs yet. The one nouveau fix is for a regression I caused with the poweroff stuff" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (30 commits) drm/nouveau: fix oops on runtime suspend/resume drm/i915: Delay disabling of VGA memory until vgacon->fbcon handoff is done drm/i915: try not to lose backlight CBLV precision drm/i915: Confine page flips to BCS on Valleyview drm/i915: Skip stolen region initialisation if none is reserved drm/i915: fix gpu hang vs. flip stall deadlocks drm/i915: Hold an object reference whilst we shrink it drm/i915: fix i9xx_crtc_clock_get for multiplied pixels drm/i915: handle sdvo input pixel multiplier correctly again drm/i915: fix hpd work vs. flush_work in the pageflip code deadlock drm/i915: fix up the relocate_entry refactoring drm/i915: Fix pipe config warnings when dealing with LVDS fixed mode drm/i915: Don't call sg_free_table() if sg_alloc_table() fails i915: Update VGA arbiter support for newer devices vgaarb: Fix VGA decodes changes vgaarb: Don't disable resources that are not owned drm/i915: Pin pages whilst mapping the dma-buf drm/i915: enable trickle feed on Haswell x86: add early quirk for reserving Intel graphics stolen memory v5 drm/i915: split PCI IDs out into i915_drm.h v4 ...
2013-09-10Merge branch 'x86/jumplabel' of ↵Linus Torvalds2-6/+73
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 jumplabel changes from Peter Anvin: "One more x86 tree for this merge window. This tree improves the handling of jump labels, so that most of the time we don't have to do a massive initial patching run. Furthermore, we will error out of the jump label is not what is expected, eg if it has been corrupted or tampered with" * 'x86/jumplabel' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/jump-label: Show where and what was wrong on errors x86/jump-label: Add safety checks to jump label conversions x86/jump-label: Do not bother updating nops if they are correct x86/jump-label: Use best default nops for inital jump label calls
2013-09-11powerpc: Default arch idle could cede processor on pseriesVaidyanathan Srinivasan1-10/+21
When adding cpuidle support to pSeries, we introduced two regressions: - The new cpuidle backend driver only works under hypervisors supporting the "SLPLAR" option, which isn't the case of the old POWER4 hypervisor and the HV "light" used on js2x blades - The cpuidle driver registers fairly late, meaning that for a significant portion of the boot process, we end up having all threads spinning. This slows down the boot process and increases the overall resource usage if the hypervisor has shared processors. This fixes both by implementing a "default" idle that will cede to the hypervisor when possible, in a very simple way without all the bells and whisles of cpuidle. Reported-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Acked-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org>
2013-09-11powerpc: Fix section mismatch warning for prom_rtas_callVladimir Murzin1-1/+2
While cross-building for PPC64 I've got WARNING: vmlinux.o(.text.unlikely+0x1ba): Section mismatch in reference from the function .prom_rtas_call() to the variable .init.data:dt_string_start The function .prom_rtas_call() references the variable __initdata dt_string_start. This is often because .prom_rtas_call lacks a __initdata annotation or the annotation of dt_string_start is wrong. WARNING: vmlinux.o(.meminit.text+0xeb0): Section mismatch in reference from the function .free_area_init_core.isra.47() to the function .init.text:.set_pageblock_order() The function __meminit .free_area_init_core.isra.47() references a function __init .set_pageblock_order(). If .set_pageblock_order is only used by .free_area_init_core.isra.47 then annotate .set_pageblock_order with a matching annotation. Fix it by proper annotation of prom_rtas_call. Signed-off-by: Vladimir Murzin <murzin.v@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-11powerpc: Fix possible deadlock on page faultAneesh Kumar K.V1-3/+10
stack_grow_into/14082 is trying to acquire lock: (&mm->mmap_sem){++++++}, at: [<c000000000206d28>] .might_fault+0x78/0xe0 but task is already holding lock: (&mm->mmap_sem){++++++}, at: [<c0000000007ffd8c>] .do_page_fault+0x24c/0x910 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&mm->mmap_sem); lock(&mm->mmap_sem); *** DEADLOCK *** May be due to missing lock nesting notation 1 lock held by stack_grow_into/14082: #0: (&mm->mmap_sem){++++++}, at: [<c0000000007ffd8c>] .do_page_fault+0x24c/0x910 stack backtrace: CPU: 21 PID: 14082 Comm: stack_grow_into Not tainted 3.10.0-10.el7.ppc64.debug #1 Call Trace: [c0000003d396b850] [c000000000016e7c] .show_stack+0x7c/0x1f0 (unreliable) [c0000003d396b920] [c000000000813fc8] .dump_stack+0x28/0x3c [c0000003d396b990] [c000000000124b90] .__lock_acquire+0x1640/0x1800 [c0000003d396bab0] [c00000000012570c] .lock_acquire+0xac/0x250 [c0000003d396bb80] [c000000000206d54] .might_fault+0xa4/0xe0 [c0000003d396bbf0] [c0000000007ffe2c] .do_page_fault+0x2ec/0x910 [c0000003d396be30] [c0000000000092e8] handle_page_fault+0x10/0x30 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-11powerpc: Export cpu_to_chip_id() to fix build errorGuenter Roeck1-0/+1
powerpc allmodconfig build fails with: ERROR: ".cpu_to_chip_id" [drivers/block/mtip32xx/mtip32xx.ko] undefined! The problem was introduced with commit 15863ff3b (powerpc: Make chip-id information available to userspace). Export the missing symbol. Cc: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Cc: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-10Merge tag 'cris-for-3.12' of git://jni.nu/crisLinus Torvalds7-552/+1
Pull CRIS updates from Jesper Nilsson: "Mostly cleanup and removal of unused configs" * tag 'cris-for-3.12' of git://jni.nu/cris: CRIS: drop unused Kconfig symbols CRIS: Add kvm_para.h which includes generic file CRIS: remove unused current_regs CRIS: Remove last traces of legacy RTC drivers CRIS: remove "config OOM_REBOOT"
2013-09-10mn10300: Fix crash just after starting userspace on !CONFIG_PREEMPTAkira Takeuchi1-2/+4
The mn10300 kernel crashes just after starting userspace programs, if CONFIG_PREEMPT is disabled: Freeing unused kernel memory: 96K (90286000 - 9029e000) MISALIGN: 97c33ff9: unsupported instruction f MISALIGN: 97c33ff9: unsupported instruction f MISALIGN: 97c33ff9: unsupported instruction f : This fixes the problem that was introduced by commit d17fc238ac14 ("MN10300: Enable IRQs more in system call exit work path"). Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com> Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-10Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds13-54/+13
Pull device tree core updates from Grant Likely: "Generally minor changes. A bunch of bug fixes, particularly for initialization and some refactoring. Most notable change if feeding the entire flattened tree into the random pool at boot. May not be significant, but shouldn't hurt either" Tim Bird questions whether the boot time cost of the random feeding may be noticeable. And "add_device_randomness()" is definitely not some speed deamon of a function. * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux: of/platform: add error reporting to of_amba_device_create() irq/of: Fix comment typo for irq_of_parse_and_map of: Feed entire flattened device tree into the random pool of/fdt: Clean up casting in unflattening path of/fdt: Remove duplicate memory clearing on FDT unflattening gpio: implement gpio-ranges binding document fix of: call __of_parse_phandle_with_args from of_parse_phandle of: introduce of_parse_phandle_with_fixed_args of: move of_parse_phandle() of: move documentation of of_parse_phandle_with_args of: Fix missing memory initialization on FDT unflattening of: consolidate definition of early_init_dt_alloc_memory_arch() of: Make of_get_phy_mode() return int i.s.o. const int include: dt-binding: input: create a DT header defining key codes. of/platform: Staticize of_platform_device_create_pdata() of: Specify initrd location using 64-bit dt: Typo fix OF: make of_property_for_each_{u32|string}() use parameters if OF is not enabled
2013-09-10Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds3-31/+17
Pull slave-dmaengine updates from Vinod Koul: "This pull brings: - Andy's DW driver updates - Guennadi's sh driver updates - Pl08x driver fixes from Tomasz & Alban - Improvements to mmp_pdma by Daniel - TI EDMA fixes by Joel - New drivers: - Hisilicon k3dma driver - Renesas rcar dma driver - New API for publishing slave driver capablities - Various fixes across the subsystem by Andy, Jingoo, Sachin etc..." * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (94 commits) dma: edma: Remove limits on number of slots dma: edma: Leave linked to Null slot instead of DUMMY slot dma: edma: Find missed events and issue them ARM: edma: Add function to manually trigger an EDMA channel dma: edma: Write out and handle MAX_NR_SG at a given time dma: edma: Setup parameters to DMA MAX_NR_SG at a time dmaengine: pl330: use dma_set_max_seg_size to set the sg limit dmaengine: dma_slave_caps: remove sg entries dma: replace devm_request_and_ioremap by devm_ioremap_resource dma: ste_dma40: Fix potential null pointer dereference dma: ste_dma40: Remove duplicate const dma: imx-dma: Remove redundant NULL check dma: dmagengine: fix function names in comments dma: add driver for R-Car HPB-DMAC dma: k3dma: use devm_ioremap_resource() instead of devm_request_and_ioremap() dma: imx-sdma: Staticize sdma_driver_data structures pch_dma: Add MODULE_DEVICE_TABLE dmaengine: PL08x: Add cyclic transfer support dmaengine: PL08x: Fix reading the byte count in cctl dmaengine: PL08x: Add support for different maximum transfer size ...
2013-09-10Merge tag 'mmc-updates-for-3.12-rc1' of ↵Linus Torvalds2-133/+13
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc Pull MMC updates from Chris Ball: "MMC highlights for 3.12: Core: - Support Allocation Units 8MB-64MB in SD3.0, previous max was 4MB. - The slot-gpio helper can now handle GPIO debouncing card-detect. - Read supported voltages from DT "voltage-ranges" property. Drivers: - dw_mmc: Add support for ARC architecture, and support exynos5420. - mmc_spi: Support CD/RO GPIOs. - sh_mobile_sdhi: Add compatibility for more Renesas SoCs. - sh_mmcif: Add DT support for DMA channels" * tag 'mmc-updates-for-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (50 commits) Revert "mmc: tmio-mmc: Remove .set_pwr() callback from platform data" mmc: dw_mmc: Add support for ARC mmc: sdhci-s3c: initialize host->quirks2 for using quirks2 mmc: sdhci-s3c: fix the wrong register value, when clock is disabled mmc: esdhc: add support to get voltage from device-tree mmc: sdhci: get voltage from sdhc host mmc: core: parse voltage from device-tree mmc: omap_hsmmc: use the generic config for omap2plus devices mmc: omap_hsmmc: clear status flags before starting a new command mmc: dw_mmc: exynos: Add a new compatible string for exynos5420 mmc: sh_mmcif: revision-specific CLK_CTRL2 handling mmc: sh_mmcif: revision-specific Command Completion Signal handling mmc: sh_mmcif: add support for Device Tree DMA bindings mmc: sh_mmcif: move header include from header into .c mmc: SDHI: add DT compatibility strings for further SoCs mmc: dw_mmc-pci: enable bus-mastering mode mmc: dw_mmc-pci: get resources from a proper BAR mmc: tmio-mmc: Remove .set_pwr() callback from platform data mmc: tmio-mmc: Remove .get_cd() callback from platform data mmc: sh_mobile_sdhi: Remove .set_pwr() callback from platform data ...
2013-09-10CRIS: drop unused Kconfig symbolsPaul Bolle4-467/+0
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2013-09-10CRIS: Add kvm_para.h which includes generic fileJesper Nilsson1-0/+1
Copied from frv. Reviewed-by: David Howells <dhowells@redhat.com> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2013-09-10CRIS: remove unused current_regsJesper Nilsson1-1/+0
CC: Mikael Starvik <starvik@axis.com> CC: linux-cris-kernel@axis.com Signed-off-by: Jonas Bonn <jonas@southpole.se> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2013-09-10CRIS: Remove last traces of legacy RTC driversPaul Bolle3-81/+0
These legacy drivers were removed in commit 9c75fc8c5c8c50775fc8b89418219221335b758f ("CRIS: Remove legacy RTC drivers"). Now remove their last traces in two Kconfig files and one Makefile. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2013-09-10CRIS: remove "config OOM_REBOOT"Paul Bolle1-3/+0
The Kconfig symbol OOM_REBOOT got added in v2.6.25. It has never been used. Its entry can safely be removed. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2013-09-09Merge tag 'late-for-linus' of ↵Linus Torvalds66-1383/+6280
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC late changes from Kevin Hilman: "These are changes that arrived a little late before the merge window, or had dependencies on previous branches. Highlights: - ux500: misc. cleanup, fixup I2C devices - exynos: DT updates for RTC; PM updates - at91: DT updates for NAND; new platforms added to generic defconfig - sunxi: DT updates: cubieboard2, pinctrl driver, gated clocks - highbank: LPAE fixes, select necessary ARM errata - omap: PM fixes and improvements; OMAP5 mailbox support - omap: basic support for new DRA7xx SoCs" * tag 'late-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits) ARM: dts: vexpress: Add CCI node to TC2 device-tree ARM: EXYNOS: Skip C1 cpuidle state for exynos5440 ARM: EXYNOS: always enable PM domains support for EXYNOS4X12 ARM: highbank: clean-up some unused includes ARM: sun7i: Enable the A20 clocks in the DTSI ARM: sun6i: Enable clock support in the DTSI ARM: sun5i: dt: Use the A10s gates in the DTSI ARM: at91: at91_dt_defconfig: enable rm9200 support ARM: dts: add ADC device tree node for exynos5420/5250 ARM: dts: Add RTC DT node to Exynos5420 SoC ARM: dts: Update the "status" property of RTC DT node for Exynos5250 SoC ARM: dts: Fix the RTC DT node name for Exynos5250 irqchip: mmp: avoid to include irqs head file ARM: mmp: avoid to include head file in mach-mmp irqchip: mmp: support irqchip irqchip: move mmp irq driver ARM: OMAP: AM33xx: clock: Add RNG clock data ARM: OMAP: TI81XX: add always-on powerdomain for TI81XX ARM: OMAP4: clock: Lock PLLs in the right sequence ARM: OMAP: AM33XX: hwmod: Add hwmod data for debugSS ...
2013-09-09Merge tag 'renesas-for-linus' of ↵Linus Torvalds62-1900/+856
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM Renesas SoC cleanup, refactoring and more SMP support from Kevin Hilman: "Lots of cleanup and refactoring and some SMP additions for Renesas platforms. Due to some inter-dependencies with other arm-soc branches, this Renesas stuff was separated out for sending after the other branches were merged. Highlights: - remove unused board support and cleanup of unused headers - refactoring of init and device registration - simplify IRQ initialization" * tag 'renesas-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (68 commits) ARM: shmobile: Per-CPU SMP boot / sleep code for SCU SoCs ARM: shmobile: Introduce per-CPU SMP boot / sleep code ARM: shmobile: Use shared SCU CPU Hotplug code on r8a7779 ARM: shmobile: Use shared SCU CPU Hotplug code on sh73a0 ARM: shmobile: Add shared SCU CPU Hotplug code ARM: shmobile: Use shared SCU SMP boot code on emev2 ARM: shmobile: Use shared SCU SMP boot code on r8a7779 ARM: shmobile: Use shared SCU SMP boot code on sh73a0 ARM: shmobile: Introduce shared SCU SMP boot code ARM: shmobile: sh73a0: Remove global GPIO_NR definition ARM: shmobile: kzm9d: remove nfsroot settings from bootargs ARM: shmobile: armadillo800eva: remove nfsroot settings from bootargs ARM: shmobile: r8a7779: move r8a7779_init_irq_xxx() to setup ARM: shmobile: r8a7740: move r8a7740_init_irq_of() to setup ARM: shmobile: bockw: add missing __initdata ARM: shmobile: r8a7790: add missing __initdata ARM: shmobile: r8a7779: add missing __initdata ARM: shmobile: Remove unused shmobile_init_time() ARM: shmobile: Use clocksource_of_init() on r8a7790 ARM: shmobile: Use default ->init_time() on KZM9G DT ref ...
2013-09-09Merge tag 'drivers-for-linus' of ↵Linus Torvalds1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver update from Kevin Hilman: "This contains the ARM SoC related driver updates for v3.12. The only thing this cycle are core PM updates and CPUidle support for ARM's TC2 big.LITTLE development platform" * tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: cpuidle: big.LITTLE: vexpress-TC2 CPU idle driver ARM: vexpress: tc2: disable GIC CPU IF in tc2_pm_suspend drivers: irq-chip: irq-gic: introduce gic_cpu_if_down()
2013-09-09Merge tag 'clk-for-linus-3.12' of git://git.linaro.org/people/mturquette/linuxLinus Torvalds2-2/+5
Pull clock framework changes from Michael Turquette: "The common clk framework changes for 3.12 are dominated by clock driver patches, both new drivers and fixes to existing. A high percentage of these are for Samsung platforms like Exynos. Core framework fixes and some new features like automagical clock re-parenting round out the patches" * tag 'clk-for-linus-3.12' of git://git.linaro.org/people/mturquette/linux: (102 commits) clk: only call get_parent if there is one clk: samsung: exynos5250: Simplify registration of PLL rate tables clk: samsung: exynos4: Register PLL rate tables for Exynos4x12 clk: samsung: exynos4: Register PLL rate tables for Exynos4210 clk: samsung: exynos4: Reorder registration of mout_vpllsrc clk: samsung: pll: Add support for rate configuration of PLL46xx clk: samsung: pll: Use new registration method for PLL46xx clk: samsung: pll: Add support for rate configuration of PLL45xx clk: samsung: pll: Use new registration method for PLL45xx clk: samsung: exynos4: Rename exynos4_plls to exynos4x12_plls clk: samsung: exynos4: Remove checks for DT node clk: samsung: exynos4: Remove unused static clkdev aliases clk: samsung: Modify _get_rate() helper to use __clk_lookup() clk: samsung: exynos4: Use separate aliases for cpufreq related clocks clocksource: samsung_pwm_timer: Get clock from device tree ARM: dts: exynos4: Specify PWM clocks in PWM node pwm: samsung: Update DT bindings documentation to cover clocks clk: Move symbol export to proper location clk: fix new_parent dereference before null check clk: wm831x: Initialise wm831x pointer on init ...
2013-09-09Merge tag 'trace-3.12' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "Not much changes for the 3.12 merge window. The major tracing changes are still in flux, and will have to wait for 3.13. The changes for 3.12 are mostly clean ups and minor fixes. H Peter Anvin added a check to x86_32 static function tracing that helps a small segment of the kernel community. Oleg Nesterov had a few changes from 3.11, but were mostly clean ups and not worth pushing in the -rc time frame. Li Zefan had small clean up with annotating a raw_init with __init. I fixed a slight race in updating function callbacks, but the race is so small and the bug that happens when it occurs is so minor it's not even worth pushing to stable. The only real enhancement is from Alexander Z Lam that made the tracing_cpumask work for trace buffer instances, instead of them all sharing a global cpumask" * tag 'trace-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace/rcu: Do not trace debug_lockdep_rcu_enabled() x86-32, ftrace: Fix static ftrace when early microcode is enabled ftrace: Fix a slight race in modifying what function callback gets traced tracing: Make tracing_cpumask available for all instances tracing: Kill the !CONFIG_MODULES code in trace_events.c tracing: Don't pass file_operations array to event_create_dir() tracing: Kill trace_create_file_ops() and friends tracing/syscalls: Annotate raw_init function with __init
2013-09-09Merge tag 'xfs-for-linus-v3.12-rc1' of git://oss.sgi.com/xfs/xfsLinus Torvalds1-2/+6
Pull xfs updates from Ben Myers: "For 3.12-rc1 there are a number of bugfixes in addition to work to ease usage of shared code between libxfs and the kernel, the rest of the work to enable project and group quotas to be used simultaneously, performance optimisations in the log and the CIL, directory entry file type support, fixes for log space reservations, some spelling/grammar cleanups, and the addition of user namespace support. - introduce readahead to log recovery - add directory entry file type support - fix a number of spelling errors in comments - introduce new Q_XGETQSTATV quotactl for project quotas - add USER_NS support - log space reservation rework - CIL optimisations - kernel/userspace libxfs rework" * tag 'xfs-for-linus-v3.12-rc1' of git://oss.sgi.com/xfs/xfs: (112 commits) xfs: XFS_MOUNT_QUOTA_ALL needed by userspace xfs: dtype changed xfs_dir2_sfe_put_ino to xfs_dir3_sfe_put_ino Fix wrong flag ASSERT in xfs_attr_shortform_getvalue xfs: finish removing IOP_* macros. xfs: inode log reservations are too small xfs: check correct status variable for xfs_inobt_get_rec() call xfs: inode buffers may not be valid during recovery readahead xfs: check LSN ordering for v5 superblocks during recovery xfs: btree block LSN escaping to disk uninitialised XFS: Assertion failed: first <= last && last < BBTOB(bp->b_length), file: fs/xfs/xfs_trans_buf.c, line: 568 xfs: fix bad dquot buffer size in log recovery readahead xfs: don't account buffer cancellation during log recovery readahead xfs: check for underflow in xfs_iformat_fork() xfs: xfs_dir3_sfe_put_ino can be static xfs: introduce object readahead to log recovery xfs: Simplify xfs_ail_min() with list_first_entry_or_null() xfs: Register hotcpu notifier after initialization xfs: add xfs sb v4 support for dirent filetype field xfs: Add write support for dirent filetype field xfs: Add read-only support for dirent filetype field ...
2013-09-09Merge tag 'for-linus-20130909' of git://git.infradead.org/linux-mtdLinus Torvalds3-0/+16
Pull mtd updates from David Woodhouse: - factor out common code from MTD tests - nand-gpio cleanup and portability to non-ARM - m25p80 support for 4-byte addressing chips, other new chips - pxa3xx cleanup and support for new platforms - remove obsolete alauda, octagon-5066 drivers - erase/write support for bcm47xxsflash - improve detection of ECC requirements for NAND, controller setup - NFC acceleration support for atmel-nand, read/write via SRAM - etc * tag 'for-linus-20130909' of git://git.infradead.org/linux-mtd: (184 commits) mtd: chips: Add support for PMC SPI Flash chips in m25p80.c mtd: ofpart: use for_each_child_of_node() macro mtd: mtdswap: replace strict_strtoul() with kstrtoul() mtd cs553x_nand: use kzalloc() instead of memset mtd: atmel_nand: fix error return code in atmel_nand_probe() mtd: bcm47xxsflash: writing support mtd: bcm47xxsflash: implement erasing support mtd: bcm47xxsflash: convert to module_platform_driver instead of init/exit mtd: bcm47xxsflash: convert kzalloc to avoid invalid access mtd: remove alauda driver mtd: nand: mxc_nand: mark 'const' properly mtd: maps: cfi_flagadm: add missing __iomem annotation mtd: spear_smi: add missing __iomem annotation mtd: r852: Staticize local symbols mtd: nandsim: Staticize local symbols mtd: impa7: add missing __iomem annotation mtd: sm_ftl: Staticize local symbols mtd: m25p80: add support for mr25h10 mtd: m25p80: make CONFIG_M25PXX_USE_FAST_READ safe to enable mtd: m25p80: Pass flags through CAT25_INFO macro ...
2013-09-09Merge branch 'for-v3.12' of ↵Linus Torvalds3-2/+3
git://git.linaro.org/people/mszyprowski/linux-dma-mapping Pull DMA mapping update from Marek Szyprowski: "This contains an addition of Device Tree support for reserved memory regions (Contiguous Memory Allocator is one of the drivers for it) and changes required by the KVM extensions for PowerPC architectue" * 'for-v3.12' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: ARM: init: add support for reserved memory defined by device tree drivers: of: add initialization code for dma reserved memory drivers: of: add function to scan fdt nodes given by path drivers: dma-contiguous: clean source code and prepare for device tree
2013-09-09Merge tag 'virtio-next-for-linus' of ↵Linus Torvalds1-2/+8
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull virtio update from Rusty Russell: "More console fixes; these are the theoretical ones which didn't get CC:stable. But for that reason, I did a merge with master partway through to avoid an unnecessary conflict. Also: a fun lguest bug turns out if you don't clear the TF flag when trapping Bad Things happen to the guest kernel as the stack overflows..." * tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: virtio_pci: pm: Use CONFIG_PM_SLEEP instead of CONFIG_PM lguest: fix GPF in guest when using gdb. lguest: fix guest kernel stack overflow when TF bit set. lguest: fix BUG_ON() in invalid guest page table. virtio: console: prevent use-after-free of port name in port unplug virtio: console: cleanup an error message virtio: console: fix locking around send_sigio_to_port() virtio: console: add locking in port unplug path virtio: console: add locks around buffer removal in port unplug path tools/lguest: offer VIRTIO_F_ANY_LAYOUT for net device. virtio tools: add .gitignore lguest: Point to the right directory for the lguest launcher
2013-09-09xen/spinlock: Don't use __initdate for xen_pv_spinKonrad Rzeszutek Wilk1-1/+1
As we get compile warnings about .init.data being used by non-init functions. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-09-09Merge tag 'metag-for-v3.12' of ↵Linus Torvalds2-0/+69
git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag Pull metag architecture changes from James Hogan: - Device tree updates for TZ1090 GPIO drivers merged via GPIO tree. - Add driver for ImgTec PDC irqchip as found in TZ1090 SoC. - Add linux-metag mailing list to MAINTAINERS file. * tag 'metag-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: irq-imgpdc: add ImgTec PDC irqchip driver MAINTAINERS: add linux-metag mailing list metag: tz1090: instantiate gpio-tz1090-pdc metag: tz1090: select and instantiate gpio-tz1090 metag: tz1090: select and instantiate irq-imgpdc
2013-09-09Revert "xen/spinlock: Disable IRQ spinlock (PV) allocation on PVHVM"Konrad Rzeszutek Wilk1-20/+0
This reverts commit 70dd4998cb85f0ecd6ac892cc7232abefa432efb. Now that the bugs have been resolved we can re-enable the PV ticketlock implementation under PVHVM Xen guests. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2013-09-09xen/spinlock: Don't setup xen spinlock IPI kicker if disabled.Konrad Rzeszutek Wilk1-1/+10
There is no need to setup this kicker IPI if we are never going to use the paravirtualized ticketlock mechanism. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2013-09-09xen/smp: Update pv_lock_ops functions before alternative code starts under PVHVMKonrad Rzeszutek Wilk1-5/+14
Before this patch we would patch all of the pv_lock_ops sites using alternative assembler. Then later in the bootup cycle change the unlock_kick and lock_spinning to the Xen specific - without re patching. That meant that for the core of the kernel we would be running with the baremetal version of unlock_kick and lock_spinning while for modules we would have the proper Xen specific slowpaths. As most of the module uses some API from the core kernel that ended up with slowpath lockers waiting forever to be kicked (b/c they would be using the Xen specific slowpath logic). And the kick never came b/c the unlock path that was taken was the baremetal one. On PV we do not have the problem as we initialise before the alternative code kicks in. The fix is to make the updating of the pv_lock_ops function be done before the alternative code starts patching. Note that this patch fixes issues discovered by commit f10cd522c5fbfec9ae3cc01967868c9c2401ed23. ("xen: disable PV spinlocks on HVM") wherein it mentioned PV spinlocks cannot possibly work with the current code because they are enabled after pvops patching has already been done, and because PV spinlocks use a different data structure than native spinlocks so we cannot switch between them dynamically. The first problem is solved by this patch. The second problem has been solved by commit 816434ec4a674fcdb3c2221a6dffdc8f34020550 (Merge branch 'x86-spinlocks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip) P.S. There is still the commit 70dd4998cb85f0ecd6ac892cc7232abefa432efb (xen/spinlock: Disable IRQ spinlock (PV) allocation on PVHVM) to revert but that can be done later after all other bugs have been fixed. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2013-09-09xen/spinlock: We don't need the old structure anymoreKonrad Rzeszutek Wilk1-18/+0
As we are using the generic ticketlock structs and these old structures are not needed anymore. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2013-09-09xen/spinlock: Fix locking path engaging too soon under PVHVM.Konrad Rzeszutek Wilk2-1/+9
The xen_lock_spinning has a check for the kicker interrupts and if it is not initialized it will spin normally (not enter the slowpath). But for PVHVM case we would initialize the kicker interrupt before the CPU came online. This meant that if the booting CPU used a spinlock and went in the slowpath - it would enter the slowpath and block forever. The forever part because during bootup: the spinlock would be taken _before_ the CPU sets itself to be online (more on this further), and we enter to poll on the event channel forever. The bootup CPU (see commit fc78d343fa74514f6fd117b5ef4cd27e4ac30236 "xen/smp: initialize IPI vectors before marking CPU online" for details) and the CPU that started the bootup consult the cpu_online_mask to determine whether the booting CPU should get an IPI. The booting CPU has to set itself in this mask via: set_cpu_online(smp_processor_id(), true); However, if the spinlock is taken before this (and it is) and it polls on an event channel - it will never be woken up as the kernel will never send an IPI to an offline CPU. Note that the PVHVM logic in sending IPIs is using the HVM path which has numerous checks using the cpu_online_mask and cpu_active_mask. See above mention git commit for details. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2013-09-09Merge tag 'v3.11-rc7' into stable/for-linus-3.12Konrad Rzeszutek Wilk118-411/+847
Linux 3.11-rc7 As we need the git commit 28817e9de4f039a1a8c1fe1df2fa2df524626b9e Author: Chuck Anderson <chuck.anderson@oracle.com> Date: Tue Aug 6 15:12:19 2013 -0700 xen/smp: initialize IPI vectors before marking CPU online * tag 'v3.11-rc7': (443 commits) Linux 3.11-rc7 ARC: [lib] strchr breakage in Big-endian configuration VFS: collect_mounts() should return an ERR_PTR bfs: iget_locked() doesn't return an ERR_PTR efs: iget_locked() doesn't return an ERR_PTR() proc: kill the extra proc_readfd_common()->dir_emit_dots() cope with potentially long ->d_dname() output for shmem/hugetlb usb: phy: fix build breakage USB: OHCI: add missing PCI PM callbacks to ohci-pci.c staging: comedi: bug-fix NULL pointer dereference on failed attach lib/lz4: correct the LZ4 license memcg: get rid of swapaccount leftovers nilfs2: fix issue with counting number of bio requests for BIO_EOPNOTSUPP error detection nilfs2: remove double bio_put() in nilfs_end_bio_write() for BIO_EOPNOTSUPP error drivers/platform/olpc/olpc-ec.c: initialise earlier ipv4: expose IPV4_DEVCONF ipv6: handle Redirect ICMP Message with no Redirected Header option be2net: fix disabling TX in be_close() Revert "ACPI / video: Always call acpi_video_init_brightness() on init" Revert "genetlink: fix family dump race" ... Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-09-09Merge tag 'arc-v3.12-rc1' of ↵Linus Torvalds18-451/+349
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC changes from Vineet Gupta: - ARC MM changes: - preparation for MMUv4 (accomodate new PTE bits, new cmds) - Rework the ASID allocation algorithm to remove asid-mm reverse map - Boilerplate code consolidation in Exception Handlers - Disable FRAME_POINTER for ARC - Unaligned Access Emulation for Big-Endian from Noam - Bunch of fixes (udelay, missing accessors) from Mischa * tag 'arc-v3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: fix new Section mismatches in build (post __cpuinit cleanup) Kconfig.debug: Add FRAME_POINTER anti-dependency for ARC ARC: Fix __udelay calculation ARC: remove console_verbose() from setup_arch() ARC: Add read*_relaxed to asm/io.h ARC: Handle un-aligned user space access in BE. ARC: [ASID] Track ASID allocation cycles/generations ARC: [ASID] activate_mm() == switch_mm() ARC: [ASID] get_new_mmu_context() to conditionally allocate new ASID ARC: [ASID] Refactor the TLB paranoid debug code ARC: [ASID] Remove legacy/unused debug code ARC: No need to flush the TLB in early boot ARC: MMUv4 preps/3 - Abstract out TLB Insert/Delete ARC: MMUv4 preps/2 - Reshuffle PTE bits ARC: MMUv4 preps/1 - Fold PTE K/U access flags ARC: Code cosmetics (Nothing semantical) ARC: Entry Handler tweaks: Optimize away redundant IRQ_DISABLE_SAVE ARC: Exception Handlers Code consolidation ARC: Add some .gitignore entries
2013-09-09Merge branch 'for-next' of ↵Linus Torvalds12-147/+27
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu Pull m68knommu fixes from Greg Ungerer: "Just a small collection of cleanups and fixes this time, no big changes. The most interresting are to make the m68k and m68knommu consistently use CONFIG_IOMAP, clean out some unused board config options and flush the cache on signal stack creation" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: remove 16 unused boards in Kconfig.machine m68k: define 'VM_DATA_DEFAULT_FLAGS' no matter whether has 'NOMMU' or not m68knommu: user generic iomap to support ioread*/iowrite* m68k/coldfire: flush cache when creating the signal stack frame m68knommu: Mark functions only called from setup_arch() __init
2013-09-09Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/umlLinus Torvalds14-26/+168
Pull UML updates from Richard Weinberger: "This pile contains mostly fixes and improvements for issues identified by Richard W M Jones while adding UML as backend to libguestfs" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: Add irq chip um/mask handlers um: prctl: Do not include linux/ptrace.h um: Run UML in it's own session. um: Cleanup SIGTERM handling um: ubd: Introduce submit_request() um: ubd: Add REQ_FLUSH suppport um: Implement probe_kernel_read() um: hostfs: Fix writeback
2013-09-09Merge branch 'x86/spinlocks' of ↵Konrad Rzeszutek Wilk11-353/+531
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into stable/for-linus-3.12 * 'x86/spinlocks' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/kvm/guest: Fix sparse warning: "symbol 'klock_waiting' was not declared as static" kvm: Paravirtual ticketlocks support for linux guests running on KVM hypervisor kvm guest: Add configuration support to enable debug information for KVM Guests kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi xen, pvticketlock: Allow interrupts to be enabled while blocking x86, ticketlock: Add slowpath logic jump_label: Split jumplabel ratelimit x86, pvticketlock: When paravirtualizing ticket locks, increment by 2 x86, pvticketlock: Use callee-save for lock_spinning xen, pvticketlocks: Add xen_nopvspin parameter to disable xen pv ticketlocks xen, pvticketlock: Xen implementation for PV ticket locks xen: Defer spinlock setup until boot CPU setup x86, ticketlock: Collapse a layer of functions x86, ticketlock: Don't inline _spin_unlock when using paravirt spinlocks x86, spinlock: Replace pv spinlocks with pv ticketlocks
2013-09-09xen/arm: disable cpuidle and cpufreq when linux is running as dom0Julien Grall1-0/+9
When linux is running as dom0, Xen doesn't show the physical cpu but a virtual CPU. On some ARM SOC (for instance the exynos 5250), linux registers callbacks for cpuidle and cpufreq. When these callbacks are called, they will modify directly the physical cpu not the virtual one. It can impact the whole board instead of only dom0. Signed-off-by: Julien Grall <julien.grall@linaro.org> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-09-09xen/p2m: Don't call get_balloon_scratch_page() twice, keep interrupts ↵Boris Ostrovsky1-4/+6
disabled for multicalls m2p_remove_override() calls get_balloon_scratch_page() in MULTI_update_va_mapping() even though it already has pointer to this page from the earlier call (in scratch_page). This second call doesn't have a matching put_balloon_scratch_page() thus not restoring preempt count back. (Also, there is no put_balloon_scratch_page() in the error path.) In addition, the second multicall uses __xen_mc_entry() which does not disable interrupts. Rearrange xen_mc_* calls to keep interrupts off while performing multicalls. This commit fixes a regression introduced by: commit ee0726407feaf504dff304fb603652fb2d778b42 Author: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Date: Tue Jul 23 17:23:54 2013 +0000 xen/m2p: use GNTTABOP_unmap_and_replace to reinstate the original mapping Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2013-09-09ARM: xen: only set pm function ptrs for Xen guestsRob Herring1-1/+4
xen_pm_init was unconditionally setting pm_power_off and arm_pm_restart function pointers. This breaks multi-platform kernels. Make this conditional on running as a Xen guest and make it a late_initcall to ensure it is setup after platform code for Dom0. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> CC: stable@vger.kernel.org
2013-09-09s390/irq: reduce size of external interrupt handler hash arrayHeiko Carstens1-2/+4
Change the hash algorithm a bit so it produces only values in the range of 0..31. This allows to reduce the size of the external interrupt handler hash array even further while making sure that each of the known interrupt sources keeps its unique hash with the slightly modified algorithm: 0x1004 --> 12 0x1201 --> 10 0x1202 --> 11 0x1406 --> 16 0x1407 --> 17 0x2401 --> 19 0x2603 --> 22 0x4000 --> 0 This also means that the entire array now fits into exactly one cache line; so add a proper align statement as well. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2013-09-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds6-35/+831
Pull crypto update from Herbert Xu: "Here is the crypto update for 3.12: - Added MODULE_SOFTDEP to allow pre-loading of modules. - Reinstated crct10dif driver using the module softdep feature. - Allow via rng driver to be auto-loaded. - Split large input data when necessary in nx. - Handle zero length messages correctly for GCM/XCBC in nx. - Handle SHA-2 chunks bigger than block size properly in nx. - Handle unaligned lengths in omap-aes. - Added SHA384/SHA512 to omap-sham. - Added OMAP5/AM43XX SHAM support. - Added OMAP4 TRNG support. - Misc fixes" * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (66 commits) Reinstate "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework" hwrng: via - Add MODULE_DEVICE_TABLE crypto: fcrypt - Fix bitoperation for compilation with clang crypto: nx - fix SHA-2 for chunks bigger than block size crypto: nx - fix GCM for zero length messages crypto: nx - fix XCBC for zero length messages crypto: nx - fix limits to sg lists for AES-CCM crypto: nx - fix limits to sg lists for AES-XCBC crypto: nx - fix limits to sg lists for AES-GCM crypto: nx - fix limits to sg lists for AES-CTR crypto: nx - fix limits to sg lists for AES-CBC crypto: nx - fix limits to sg lists for AES-ECB crypto: nx - add offset to nx_build_sg_lists() padata - Register hotcpu notifier after initialization padata - share code between CPU_ONLINE and CPU_DOWN_FAILED, same to CPU_DOWN_PREPARE and CPU_UP_CANCELED hwrng: omap - reorder OMAP TRNG driver code crypto: omap-sham - correct dma burst size crypto: omap-sham - Enable Polling mode if DMA fails crypto: tegra-aes - bitwise vs logical and crypto: sahara - checking the wrong variable ...