1. 11 9月, 2012 5 次提交
  2. 10 9月, 2012 3 次提交
    • J
      i2c-core: Fix for lockdep validator · 390946b1
      Jean Delvare 提交于
      If kernel is compiled with CONFIG_PROVE_LOCKING the
      validator raises an error when a multiplexer is removed
      via sysfs and sub-clients are connected to it. This is a
      false positive.
      Documentation/lockdep-design.txt recommends to handle this
      via calls to mutex_lock_nested().
      
      Based on an earlier fix from Michael Lawnick.
      
      Note that the extra code resolves to nothing unless
      CONFIG_DEBUG_LOCK_ALLOC=y.
      Signed-off-by: NJean Delvare <khali@linux-fr.org>
      Cc: Michael Lawnick <ml.lawnick@gmx.de>
      390946b1
    • A
      i2c-designware: Fix build error if CONFIG_I2C_DESIGNWARE_PLATFORM=y && CONFIG_I2C_DESIGNWARE_PCI=y · e68bb91b
      Axel Lin 提交于
      This patch adds config I2C_DESIGNWARE_CORE in Kconfig, and let
      I2C_DESIGNWARE_PLATFORM and I2C_DESIGNWARE_PCI select I2C_DESIGNWARE_CORE.
      
      Because both I2C_DESIGNWARE_PLATFORM and I2C_DESIGNWARE_PCI can be built as
      built-in or module, we also need to export the functions in i2c-designware-core.
      
      This fixes below build error when CONFIG_I2C_DESIGNWARE_PLATFORM=y &&
      CONFIG_I2C_DESIGNWARE_PCI=y:
      
        LD      drivers/i2c/busses/built-in.o
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_clear_int':
      i2c-designware-core.c:(.text+0xa10): multiple definition of `i2c_dw_clear_int'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x928): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_init':
      i2c-designware-core.c:(.text+0x178): multiple definition of `i2c_dw_init'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x90): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `dw_readl':
      i2c-designware-core.c:(.text+0xe8): multiple definition of `dw_readl'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x0): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_isr':
      i2c-designware-core.c:(.text+0x724): multiple definition of `i2c_dw_isr'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x63c): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_xfer':
      i2c-designware-core.c:(.text+0x4b0): multiple definition of `i2c_dw_xfer'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x3c8): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_is_enabled':
      i2c-designware-core.c:(.text+0x9d4): multiple definition of `i2c_dw_is_enabled'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x8ec): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `dw_writel':
      i2c-designware-core.c:(.text+0x124): multiple definition of `dw_writel'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x3c): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_xfer_msg':
      i2c-designware-core.c:(.text+0x2e8): multiple definition of `i2c_dw_xfer_msg'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x200): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_enable':
      i2c-designware-core.c:(.text+0x9c8): multiple definition of `i2c_dw_enable'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x8e0): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_read_comp_param':
      i2c-designware-core.c:(.text+0xa24): multiple definition of `i2c_dw_read_comp_param'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x93c): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_disable':
      i2c-designware-core.c:(.text+0x9dc): multiple definition of `i2c_dw_disable'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x8f4): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_func':
      i2c-designware-core.c:(.text+0x710): multiple definition of `i2c_dw_func'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x628): first defined here
      drivers/i2c/busses/i2c-designware-pci.o: In function `i2c_dw_disable_int':
      i2c-designware-core.c:(.text+0xa18): multiple definition of `i2c_dw_disable_int'
      drivers/i2c/busses/i2c-designware-platform.o:i2c-designware-platdrv.c:(.text+0x930): first defined here
      make[3]: *** [drivers/i2c/busses/built-in.o] Error 1
      make[2]: *** [drivers/i2c/busses] Error 2
      make[1]: *** [drivers/i2c] Error 2
      make: *** [drivers] Error 2
      Signed-off-by: NAxel Lin <axel.lin@gmail.com>
      Signed-off-by: NJean Delvare <khali@linux-fr.org>
      Tested-by: NJiri Slaby <jslaby@suse.cz>
      Cc: stable@vger.kernel.org [3.2+]
      e68bb91b
    • J
      i2c-i801: Add Device IDs for Intel Lynx Point-LP PCH · 4a8f1ddd
      James Ralston 提交于
      Add the SMBus Device IDs for the Intel Lynx Point-LP PCH.
      Signed-off-by: NJames Ralston <james.d.ralston@intel.com>
      Signed-off-by: NJean Delvare <khali@linux-fr.org>
      4a8f1ddd
  3. 09 9月, 2012 3 次提交
    • L
      Linux 3.6-rc5 · 55d512e2
      Linus Torvalds 提交于
      55d512e2
    • L
      Merge branch 'fixes-for-3.6' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping · 32d687ca
      Linus Torvalds 提交于
      Pull DMA-mapping fixes from Marek Szyprowski:
       "Another set of fixes for ARM dma-mapping subsystem.
      
        Commit e9da6e99 replaced custom consistent buffer remapping code
        with generic vmalloc areas.  It however introduced some regressions
        caused by limited support for allocations in atomic context.  This
        series contains fixes for those regressions.
      
        For some subplatforms the default, pre-allocated pool for atomic
        allocations turned out to be too small, so a function for setting its
        size has been added.
      
        Another set of patches adds support for atomic allocations to
        IOMMU-aware DMA-mapping implementation.
      
        The last part of this pull request contains two fixes for Contiguous
        Memory Allocator, which relax too strict requirements."
      
      * 'fixes-for-3.6' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
        ARM: dma-mapping: IOMMU allocates pages from atomic_pool with GFP_ATOMIC
        ARM: dma-mapping: Introduce __atomic_get_pages() for __iommu_get_pages()
        ARM: dma-mapping: Refactor out to introduce __in_atomic_pool
        ARM: dma-mapping: atomic_pool with struct page **pages
        ARM: Kirkwood: increase atomic coherent pool size
        ARM: DMA-Mapping: print warning when atomic coherent allocation fails
        ARM: DMA-Mapping: add function for setting coherent pool size from platform code
        ARM: relax conditions required for enabling Contiguous Memory Allocator
        mm: cma: fix alignment requirements for contiguous regions
      32d687ca
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · 11be4bc6
      Linus Torvalds 提交于
      Pull input subsystem updates from Dmitry Torokhov.
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Input: wacom - add support for EMR on Cintiq 24HD touch
        Input: i8042 - add Gigabyte T1005 series netbooks to noloop table
        Input: imx_keypad - reset the hardware before enabling
        Input: edt-ft5x06 - fix build error when compiling wthout CONFIG_DEBUG_FS
      11be4bc6
  4. 08 9月, 2012 1 次提交
  5. 07 9月, 2012 11 次提交
  6. 06 9月, 2012 11 次提交
    • K
      xen/pciback: Fix proper FLR steps. · 80ba77df
      Konrad Rzeszutek Wilk 提交于
      When we do FLR and save PCI config we did it in the wrong order.
      The end result was that if a PCI device was unbind from
      its driver, then binded to xen-pciback, and then back to its
      driver we would get:
      
      > lspci -s 04:00.0
      04:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
      13:42:12 # 4 :~/
      > echo "0000:04:00.0" > /sys/bus/pci/drivers/pciback/unbind
      > modprobe e1000e
      e1000e: Intel(R) PRO/1000 Network Driver - 2.0.0-k
      e1000e: Copyright(c) 1999 - 2012 Intel Corporation.
      e1000e 0000:04:00.0: Disabling ASPM L0s L1
      e1000e 0000:04:00.0: enabling device (0000 -> 0002)
      xen: registering gsi 48 triggering 0 polarity 1
      Already setup the GSI :48
      e1000e 0000:04:00.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
      e1000e: probe of 0000:04:00.0 failed with error -2
      
      This fixes it by first saving the PCI configuration space, then
      doing the FLR.
      Reported-by: NRen, Yongjie <yongjie.ren@intel.com>
      Reported-and-Tested-by: NTobias Geiger <tobias.geiger@vido.info>
      Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      CC: stable@vger.kernel.org
      80ba77df
    • L
      Merge tag 'mmc-fixes-for-3.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc · 08090950
      Linus Torvalds 提交于
      Pull MMC fixes from Chris Ball:
       - a firmware bug on several Samsung MoviNAND eMMC models causes
         permanent corruption on the device when secure erase and secure trim
         requests are made, so we disable those requests on these eMMC devices.
       - atmel-mci: fix a hang with some SD cards by waiting for not-busy flag.
       - dw_mmc: low-power mode breaks SDIO interrupts; fix PIO error handling;
         fix handling of error interrupts.
       - mxs-mmc: fix deadlocks; fix compile error due to dma.h arch change.
       - omap: fix broken PIO mode causing memory corruption.
       - sdhci-esdhc: fix card detection.
      
      * tag 'mmc-fixes-for-3.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
        mmc: omap: fix broken PIO mode
        mmc: card: Skip secure erase on MoviNAND; causes unrecoverable corruption.
        mmc: dw_mmc: Disable low power mode if SDIO interrupts are used
        mmc: dw_mmc: fix error handling in PIO mode
        mmc: dw_mmc: correct mishandling error interrupt
        mmc: dw_mmc: amend using error interrupt status
        mmc: atmel-mci: not busy flag has also to be used for read operations
        mmc: sdhci-esdhc: break out early if clock is 0
        mmc: mxs-mmc: fix deadlock caused by recursion loop
        mmc: mxs-mmc: fix deadlock in SDIO IRQ case
        mmc: bfin_sdh: fix dma_desc_array build error
      08090950
    • M
      uml: fix compile error in deliver_alarm() · bc6c8364
      Miklos Szeredi 提交于
      Fix the following compile error on UML.
      
        arch/um/os-Linux/time.c: In function 'deliver_alarm':
        arch/um/os-Linux/time.c:117:3: error: too few arguments to function 'alarm_handler'
        arch/um/os-Linux/internal.h:1:6: note: declared here
      
      The error was introduced by commit d3c1cfcd ("um: pass siginfo to guest
      process") in 3.6-rc1.
      Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      CC: Martin Pärtel <martin.partel@gmail.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      bc6c8364
    • A
      dj: memory scribble in logi_dj · 8a55ade7
      Alan Cox 提交于
      Allocate a structure not a pointer to it !
      Signed-off-by: NAlan Cox <alan@linux.intel.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      8a55ade7
    • L
      Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc · cb4f9a29
      Linus Torvalds 提交于
      Pull powerpc fixes from Benjamin Herrenschmidt:
       "Here are a few fixes for 3.6 that were piling up while I was away or
        busy (I was mostly MIA a week or two before San Diego).
      
        Some fixes from Anton fixing up issues with our relatively new DSCR
        control feature, and a few other fixes that are either regressions or
        bugs nasty enough to warrant not waiting."
      
      * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
        powerpc: Don't use __put_user() in patch_instruction
        powerpc: Make sure IPI handlers see data written by IPI senders
        powerpc: Restore correct DSCR in context switch
        powerpc: Fix DSCR inheritance in copy_thread()
        powerpc: Keep thread.dscr and thread.dscr_inherit in sync
        powerpc: Update DSCR on all CPUs when writing sysfs dscr_default
        powerpc/powernv: Always go into nap mode when CPU is offline
        powerpc: Give hypervisor decrementer interrupts their own handler
        powerpc/vphn: Fix arch_update_cpu_topology() return value
      cb4f9a29
    • L
      Merge tag 'gpio-fixes-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio · 813e6438
      Linus Torvalds 提交于
      Pull GPIO fixes from Linus Walleij:
       "These are some GPIO regression fixes for v3.6:
         - Erroneous debug message from of_get_named_gpio_flags()
         - Make sure the MC9S08DZ60 GPIO driver depend on I2C being compiled
           in (not module) or allmodconfig breaks.
         - Check return value from irq_alloc_descs() in the Emma Mobile GPIO
           driver.
         - Assign the owner field for the rdc321x driver so the module won't
           be removed if it has active GPIOs."
      
      * tag 'gpio-fixes-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
        gpio: rdc321x: Prevent removal of modules exporting active GPIOs
        gpio: em: Fix checking return value of irq_alloc_descs
        gpio: mc9s08dz60: Fix build error if I2C=m
        gpio: Fix debug message in of_get_named_gpio_flags()
      813e6438
    • L
      Merge tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 5e682c0e
      Linus Torvalds 提交于
      Pull sound fixes from Takashi Iwai:
       "There are nothing scaring, contains only small fixes for HD-audio and
        USB-audio:
         - EPSS regression fix and GPIO fix for HD-audio IDT codecs
         - A series of USB-audio regression fixes that are found since 3.5
           kernel"
      
      * tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: snd-usb: fix cross-interface streaming devices
        ALSA: snd-usb: fix calls to next_packet_size
        ALSA: snd-usb: restore delay information
        ALSA: snd-usb: use list_for_each_safe for endpoint resources
        ALSA: snd-usb: Fix URB cancellation at stream start
        ALSA: hda - Don't trust codec EPSS bit for IDT 92HD83xx & co
        ALSA: hda - Avoid unnecessary parameter read for EPSS
        ALSA: hda - Do not set GPIOs for speakers on IDT if there are no speakers
      5e682c0e
    • L
      Merge tag 'fbdev-fixes-for-3.6-1' of git://github.com/schandinat/linux-2.6 · 6d1a0503
      Linus Torvalds 提交于
      Pull fbdev fixes from Florian Tobias Schandinat:
       - a fix by Paul Cercueil to prevent a possible buffer overflow
       - a fix by Bruno Prémont to prevent a rare sleep in invalid context
       - a fix by Julia Lawall for a double free in auo_k190x
       - a fix by Dan Carpenter to prevent a division by zero in mb862xxfb
       - a regression fix by Tomi Valkeinen for the SDI output in OMAP
       - a fix by Grazvydas Ignotas to fix the console colors in OMAP
      
      * tag 'fbdev-fixes-for-3.6-1' of git://github.com/schandinat/linux-2.6:
        OMAPFB: fix framebuffer console colors
        OMAPDSS: Fix SDI PLL locking
        video: mb862xxfb: prevent divide by zero bug
        drivers/video/auo_k190x.c: drop kfree of devm_kzalloc's data
        fbcon: Fix bit_putcs() call to kmalloc(s, GFP_KERNEL)
        fbcon: prevent possible buffer overflow.
      6d1a0503
    • L
      Merge tag 'upstream-3.6-rc5' of git://git.infradead.org/linux-ubi · 50234c58
      Linus Torvalds 提交于
      Pull ubi fix from Artem Bityutskiy:
       "A single small fix for memory deallocation: we allocated memory using
        'kmem_cache_alloc()' but were freeing it using 'kfree()' in some
        cases.  Now we fix this by using 'kmem_cache_free()' instead."
      
      * tag 'upstream-3.6-rc5' of git://git.infradead.org/linux-ubi:
        UBI: fix a horrible memory deallocation bug
      50234c58
    • M
      Fix order of arguments to compat_put_time[spec|val] · ed6fe9d6
      Mikulas Patocka 提交于
      Commit 644595f8 ("compat: Handle COMPAT_USE_64BIT_TIME in
      net/socket.c") introduced a bug where the helper functions to take
      either a 64-bit or compat time[spec|val] got the arguments in the wrong
      order, passing the kernel stack pointer off as a user pointer (and vice
      versa).
      
      Because of the user address range check, that in turn then causes an
      EFAULT due to the user pointer range checking failing for the kernel
      address.  Incorrectly resuling in a failed system call for 32-bit
      processes with a 64-bit kernel.
      
      On odder architectures like HP-PA (with separate user/kernel address
      spaces), it can be used read kernel memory.
      Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      ed6fe9d6
    • K
      drm: use drm_compat_ioctl for 32-bit apps · 804d74ab
      Keith Packard 提交于
      Most of the DRM drivers appear to be missing the .compat_ioctl file
      operation entry necessary for 32-bit application compatibility.
      
      This patch  uses drm_compat_ioctl for all drivers which don't have
      their own, and which are using drm_ioctl for .unlocked_ioctl.
      
      This leaves drivers/gpu/drm/psb/psb_drv.c unchanged; it has a custom
      .unlocked_ioctl and will presumably need a custom .compat_ioctl as
      well.
      Signed-off-by: NKeith Packard <keithp@keithp.com>
      Signed-off-by: NDave Airlie <airlied@gmail.com>
      804d74ab
  7. 05 9月, 2012 6 次提交
    • R
      xen: Use correct masking in xen_swiotlb_alloc_coherent. · b5031ed1
      Ronny Hegewald 提交于
      When running 32-bit pvops-dom0 and a driver tries to allocate a coherent
      DMA-memory the xen swiotlb-implementation returned memory beyond 4GB.
      
      The underlaying reason is that if the supplied driver passes in a
      DMA_BIT_MASK(64) ( hwdev->coherent_dma_mask is set to 0xffffffffffffffff)
      our dma_mask will be u64 set to 0xffffffffffffffff even if we set it to
      DMA_BIT_MASK(32) previously. Meaning we do not reset the upper bits.
      By using the dma_alloc_coherent_mask function - it does the proper casting
      and we get 0xfffffffff.
      
      This caused not working sound on a system with 4 GB and a 64-bit
      compatible sound-card with sets the DMA-mask to 64bit.
      
      On bare-metal and the forward-ported xen-dom0 patches from OpenSuse a coherent
      DMA-memory is always allocated inside the 32-bit address-range by calling
      dma_alloc_coherent_mask.
      
      This patch adds the same functionality to xen swiotlb and is a rebase of the
      original patch from Ronny Hegewald which never got upstream b/c the
      underlaying reason was not understood until now.
      
      The original email with the original patch is in:
      http://old-list-archives.xen.org/archives/html/xen-devel/2010-02/msg00038.html
      the original thread from where the discussion started is in:
      http://old-list-archives.xen.org/archives/html/xen-devel/2010-01/msg00928.htmlSigned-off-by: NRonny Hegewald <ronny.hegewald@online.de>
      Signed-off-by: NStefano Panella <stefano.panella@citrix.com>
      Acked-By: NDavid Vrabel <david.vrabel@citrix.com>
      Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      CC: stable@vger.kernel.org
      b5031ed1
    • A
      xen: fix logical error in tlb flushing · ce7184bd
      Alex Shi 提交于
      While TLB_FLUSH_ALL gets passed as 'end' argument to
      flush_tlb_others(), the Xen code was made to check its 'start'
      parameter. That may give a incorrect op.cmd to MMUEXT_INVLPG_MULTI
      instead of MMUEXT_TLB_FLUSH_MULTI. Then it causes some page can not
      be flushed from TLB.
      
      This patch fixed this issue.
      Reported-by: NJan Beulich <jbeulich@suse.com>
      Signed-off-by: NAlex Shi <alex.shi@intel.com>
      Acked-by: NJan Beulich <jbeulich@suse.com>
      Tested-by: NYongjie Ren <yongjie.ren@intel.com>
      Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      ce7184bd
    • K
      Merge commit '4cb38750' into stable/for-linus-3.6 · 593d0a3e
      Konrad Rzeszutek Wilk 提交于
      * commit '4cb38750': (6849 commits)
        bcma: fix invalid PMU chip control masks
        [libata] pata_cmd64x: whitespace cleanup
        libata-acpi: fix up for acpi_pm_device_sleep_state API
        sata_dwc_460ex: device tree may specify dma_channel
        ahci, trivial: fixed coding style issues related to braces
        ahci_platform: add hibernation callbacks
        libata-eh.c: local functions should not be exposed globally
        libata-transport.c: local functions should not be exposed globally
        sata_dwc_460ex: support hardreset
        ata: use module_pci_driver
        drivers/ata/pata_pcmcia.c: adjust suspicious bit operation
        pata_imx: Convert to clk_prepare_enable/clk_disable_unprepare
        ahci: Enable SB600 64bit DMA on MSI K9AGM2 (MS-7327) v2
        [libata] Prevent interface errors with Seagate FreeAgent GoFlex
        drivers/acpi/glue: revert accidental license-related 6b66d958 bits
        libata-acpi: add missing inlines in libata.h
        i2c-omap: Add support for I2C_M_STOP message flag
        i2c: Fall back to emulated SMBus if the operation isn't supported natively
        i2c: Add SCCB support
        i2c-tiny-usb: Add support for the Robofuzz OSIF USB/I2C converter
        ...
      593d0a3e
    • J
      udf: Fix data corruption for files in ICB · 9c2fc0de
      Jan Kara 提交于
      When a file is stored in ICB (inode), we overwrite part of the file, and
      the page containing file's data is not in page cache, we end up corrupting
      file's data by overwriting them with zeros. The problem is we use
      simple_write_begin() which simply zeroes parts of the page which are not
      written to. The problem has been introduced by be021ee4 (udf: convert to
      new aops).
      
      Fix the problem by providing a ->write_begin function which makes the page
      properly uptodate.
      
      CC: <stable@vger.kernel.org> # >= 2.6.24
      Reported-by: NIan Abbott <abbotti@mev.co.uk>
      Signed-off-by: NJan Kara <jack@suse.cz>
      9c2fc0de
    • K
      xen/p2m: Fix one-off error in checking the P2M tree directory. · 50e90041
      Konrad Rzeszutek Wilk 提交于
      We would traverse the full P2M top directory (from 0->MAX_DOMAIN_PAGES
      inclusive) when trying to figure out whether we can re-use some of the
      P2M middle leafs.
      
      Which meant that if the kernel was compiled with MAX_DOMAIN_PAGES=512
      we would try to use the 512th entry. Fortunately for us the p2m_top_index
      has a check for this:
      
       BUG_ON(pfn >= MAX_P2M_PFN);
      
      which we hit and saw this:
      
      (XEN) domain_crash_sync called from entry.S
      (XEN) Domain 0 (vcpu#0) crashed on cpu#0:
      (XEN) ----[ Xen-4.1.2-OVM  x86_64  debug=n  Tainted:    C ]----
      (XEN) CPU:    0
      (XEN) RIP:    e033:[<ffffffff819cadeb>]
      (XEN) RFLAGS: 0000000000000212   EM: 1   CONTEXT: pv guest
      (XEN) rax: ffffffff81db5000   rbx: ffffffff81db4000   rcx: 0000000000000000
      (XEN) rdx: 0000000000480211   rsi: 0000000000000000   rdi: ffffffff81db4000
      (XEN) rbp: ffffffff81793db8   rsp: ffffffff81793d38   r8:  0000000008000000
      (XEN) r9:  4000000000000000   r10: 0000000000000000   r11: ffffffff81db7000
      (XEN) r12: 0000000000000ff8   r13: ffffffff81df1ff8   r14: ffffffff81db6000
      (XEN) r15: 0000000000000ff8   cr0: 000000008005003b   cr4: 00000000000026f0
      (XEN) cr3: 0000000661795000   cr2: 0000000000000000
      
      Fixes-Oracle-Bug: 14570662
      CC: stable@vger.kernel.org # only for v3.5
      Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      50e90041
    • B
      powerpc: Don't use __put_user() in patch_instruction · 636802ef
      Benjamin Herrenschmidt 提交于
      patch_instruction() can be called very early on ppc32, when the kernel
      isn't yet running at it's linked address. That can cause the !
      is_kernel_addr() test in __put_user() to trip and call might_sleep()
      which is very bad at that point during boot.
      
      Use a lower level function instead for now, at least until we get to
      rework ppc32 boot process to do the code patching later, like ppc64
      does.
      Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      636802ef