1. 27 Aug, 2013 7 commits
    • Linus Torvalds's avatar
      Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc · 0c6b5c5b
      Linus Torvalds authored
      Pull powerpc fixes from Ben Herrenschmidt:
       "Here are 3 bug fixes that should probably go into 3.11 since I'm also
        tagging them for stable.
      
        Once fixes our old /proc/powerpc/lparcfg file which provides partition
        informations when running under our hypervisor and also acts as a
        user-triggerable Oops when hot :-(
      
        The other two respectively are a one liner to fix a HVSI protocol
        handshake problem causing the console to fail to show up on a bunch of
        machines until we reach userspace, which I deem annoying enough to
        warrant going to stable, and a nasty gcc miscompile causing us to pass
        virtual instead of physical addresses to the firmware under some
        circumstances"
      
      * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
        powerpc/hvsi: Increase handshake timeout from 200ms to 400ms.
        powerpc: Work around gcc miscompilation of __pa() on 64-bit
        powerpc: Don't Oops when accessing /proc/powerpc/lparcfg without hypervisor
      0c6b5c5b
    • Cyrill Gorcunov's avatar
      mm: move_ptes -- Set soft dirty bit depending on pte type · 6dec97dc
      Cyrill Gorcunov authored
      Dave reported corrupted swap entries
      
       | [ 4588.541886] swap_free: Unused swap offset entry 00002d15
       | [ 4588.541952] BUG: Bad page map in process trinity-kid12  pte:005a2a80 pmd:22c01f067
      
      and Hugh pointed that in move_ptes _PAGE_SOFT_DIRTY bit set regardless
      the type of entry pte consists of.  The trick here is that when we carry
      soft dirty status in swap entries we are to use _PAGE_SWP_SOFT_DIRTY
      instead, because this is the only place in pte which can be used for own
      needs without intersecting with bits owned by swap entry type/offset.
      Reported-and-tested-by: default avatarDave Jones <davej@redhat.com>
      Signed-off-by: default avatarCyrill Gorcunov <gorcunov@openvz.org>
      Cc: Pavel Emelyanov <xemul@parallels.com>
      Analyzed-by: default avatarHugh Dickins <hughd@google.com>
      Cc: Hillf Danton <dhillf@gmail.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6dec97dc
    • Eugene Surovegin's avatar
      powerpc/hvsi: Increase handshake timeout from 200ms to 400ms. · d220980b
      Eugene Surovegin authored
      This solves a problem observed in kexec'ed kernel where 200ms timeout is
      too short and bootconsole fails to initialize. Console did eventually
      become workable but much later into the boot process.
      
      Observed timeout was around 260ms, but I decided to make it a little bigger
      for more reliability.
      
      This has been tested on Power7 machine with Petitboot as a primary
      bootloader and PowerNV firmware.
      
      CC: <stable@vger.kernel.org>
      Signed-off-by: default avatarEugene Surovegin <surovegin@google.com>
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      d220980b
    • Paul Mackerras's avatar
      powerpc: Work around gcc miscompilation of __pa() on 64-bit · bdbc29c1
      Paul Mackerras authored
      On 64-bit, __pa(&static_var) gets miscompiled by recent versions of
      gcc as something like:
      
              addis 3,2,.LANCHOR1+4611686018427387904@toc@ha
              addi 3,3,.LANCHOR1+4611686018427387904@toc@l
      
      This ends up effectively ignoring the offset, since its bottom 32 bits
      are zero, and means that the result of __pa() still has 0xC in the top
      nibble.  This happens with gcc 4.8.1, at least.
      
      To work around this, for 64-bit we make __pa() use an AND operator,
      and for symmetry, we make __va() use an OR operator.  Using an AND
      operator rather than a subtraction ends up with slightly shorter code
      since it can be done with a single clrldi instruction, whereas it
      takes three instructions to form the constant (-PAGE_OFFSET) and add
      it on.  (Note that MEMORY_START is always 0 on 64-bit.)
      
      CC: <stable@vger.kernel.org>
      Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      bdbc29c1
    • Benjamin Herrenschmidt's avatar
      powerpc: Don't Oops when accessing /proc/powerpc/lparcfg without hypervisor · f5f6cbb6
      Benjamin Herrenschmidt authored
      /proc/powerpc/lparcfg is an ancient facility (though still actively used)
      which allows access to some informations relative to the partition when
      running underneath a PAPR compliant hypervisor.
      
      It makes no sense on non-pseries machines. However, currently, not only
      can it be created on these if the kernel has pseries support, but accessing
      it on such a machine will crash due to trying to do hypervisor calls.
      
      In fact, it should also not do HV calls on older pseries that didn't have
      an hypervisor either.
      
      Finally, it has the plumbing to be a module but is a "bool" Kconfig option.
      
      This fixes the whole lot by turning it into a machine_device_initcall
      that is only created on pseries, and adding the necessary hypervisor
      check before calling the H_GET_EM_PARMS hypercall
      
      CC: <stable@vger.kernel.org>
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      f5f6cbb6
    • Linus Torvalds's avatar
      Merge tag 'usb-3.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 9b506833
      Linus Torvalds authored
      Pull USB bugfix from Greg KH:
       "Here is a single bugfix that resolves the "can not build the OHCI
        driver with CONFIG_PM disabled" problem that lots of people have been
        reporting with 3.11-rc7.  Sorry about that one, it missed my build
        tests, and it seems, a number of others as well.
      
        Thank goodness for Guenter :)"
      
      * tag 'usb-3.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
        USB: OHCI: fix build error related to ohci_suspend/resume
      9b506833
    • Linus Torvalds's avatar
      Merge tag 'jfs-3.11-rc8' of git://github.com/kleikamp/linux-shaggy · 83c425d2
      Linus Torvalds authored
      Pull jfs fix from Dave Kleikamp:
       "One JFS patch to fix an incompatibility with NFSv4 resulting in the
        nfs client reporting a readdir loop"
      
      * tag 'jfs-3.11-rc8' of git://github.com/kleikamp/linux-shaggy:
        jfs: fix readdir cookie incompatibility with NFSv4
      83c425d2
  2. 26 Aug, 2013 2 commits
  3. 25 Aug, 2013 4 commits
  4. 24 Aug, 2013 8 commits
  5. 23 Aug, 2013 17 commits
  6. 22 Aug, 2013 2 commits