1. 20 Feb, 2018 9 commits
  2. 17 Feb, 2018 8 commits
  3. 15 Feb, 2018 15 commits
  4. 14 Feb, 2018 2 commits
    • Linus Torvalds's avatar
      Merge tag 'gfs2-4.16.rc1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 · 6556677a
      Linus Torvalds authored
      Pull gfs2 fix from Bob Peterson:
       "Fix regressions in the gfs2 iomap for block_map implementation we
        recently discovered in commit 3974320c"
      
      * tag 'gfs2-4.16.rc1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
        gfs2: Fixes to "Implement iomap for block_map"
      6556677a
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 694a20da
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       "A larger batch of fixes than we'd like. Roughly 1/3 fixes for new
        code, 1/3 fixes for stable and 1/3 minor things.
      
        There's four commits fixing bugs when using 16GB huge pages on hash,
        caused by some of the preparatory changes for pkeys.
      
        Two fixes for bugs in the enhanced IRQ soft masking for local_t, one
        of which broke KVM in some circumstances.
      
        Four fixes for Power9. The most bizarre being a bug where futexes
        stopped working because a NULL pointer dereference didn't trap during
        early boot (it aliased the kernel mapping). A fix for memory hotplug
        when using the Radix MMU, and a fix for live migration of guests using
        the Radix MMU.
      
        Two fixes for hotplug on pseries machines. One where we weren't
        correctly updating NUMA info when CPUs are added and removed. And the
        other fixes crashes/hangs seen when doing memory hot remove during
        boot, which is apparently a thing people do.
      
        Finally a handful of build fixes for obscure configs and other minor
        fixes.
      
        Thanks to: Alexey Kardashevskiy, Aneesh Kumar K.V, Balbir Singh, Colin
        Ian King, Daniel Henrique Barboza, Florian Weimer, Guenter Roeck,
        Harish, Laurent Vivier, Madhavan Srinivasan, Mauricio Faria de
        Oliveira, Nathan Fontenot, Nicholas Piggin, Sam Bobroff"
      
      * tag 'powerpc-4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        selftests/powerpc: Fix to use ucontext_t instead of struct ucontext
        powerpc/kdump: Fix powernv build break when KEXEC_CORE=n
        powerpc/pseries: Fix build break for SPLPAR=n and CPU hotplug
        powerpc/mm/hash64: Zero PGD pages on allocation
        powerpc/mm/hash64: Store the slot information at the right offset for hugetlb
        powerpc/mm/hash64: Allocate larger PMD table if hugetlb config is enabled
        powerpc/mm: Fix crashes with 16G huge pages
        powerpc/mm: Flush radix process translations when setting MMU type
        powerpc/vas: Don't set uses_vas for kernel windows
        powerpc/pseries: Enable RAS hotplug events later
        powerpc/mm/radix: Split linear mapping on hot-unplug
        powerpc/64s/radix: Boot-time NULL pointer protection using a guard-PID
        ocxl: fix signed comparison with less than zero
        powerpc/64s: Fix may_hard_irq_enable() for PMI soft masking
        powerpc/64s: Fix MASKABLE_RELON_EXCEPTION_HV_OOL macro
        powerpc/numa: Invalidate numa_cpu_lookup_table on cpu remove
      694a20da
  5. 13 Feb, 2018 6 commits
    • Andreas Gruenbacher's avatar
      gfs2: Fixes to "Implement iomap for block_map" · 49edd5bf
      Andreas Gruenbacher authored
      It turns out that commit 3974320c
      
       "Implement iomap for block_map"
      introduced a few bugs that trigger occasional failures with xfstest
      generic/476:
      
      In gfs2_iomap_begin, we jump to do_alloc when we determine that we are
      beyond the end of the allocated metadata (height > ip->i_height).
      There, we can end up calling hole_size with a metapath that doesn't
      match the current metadata tree, which doesn't make sense.  After
      untangling the code at do_alloc, fix this by checking if the block we
      are looking for is within the range of allocated metadata.
      
      In addition, add a BUG() in case gfs2_iomap_begin is accidentally called
      for reading stuffed files: this is handled separately.  Make sure we
      don't truncate iomap->length for reads beyond the end of the file; in
      that case, the entire range counts as a hole.
      
      Finally, revert to taking a bitmap write lock when doing allocations.
      It's unclear why that change didn't lead to any failures during testing.
      
      Signed-off-by: default avatarAndreas Gruenbacher <agruenba@redhat.com>
      Signed-off-by: default avatarBob Peterson <rpeterso@redhat.com>
      49edd5bf
    • Linus Torvalds's avatar
      Merge tag 'mips_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips · 61f14c01
      Linus Torvalds authored
      Pull MIPS fix from James Hogan:
       "A single change (and associated DT binding update) to allow the
        address of the MIPS Cluster Power Controller (CPC) to be chosen by DT,
        which allows SMP to work on generic MIPS kernels where the bootloader
        hasn't configured the CPC address (i.e. the new Ranchu platform)"
      
      * tag 'mips_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips:
        MIPS: CPC: Map registers using DT in mips_cpc_default_phys_base()
        dt-bindings: Document mti,mips-cpc binding
      61f14c01
    • Harish's avatar
      selftests/powerpc: Fix to use ucontext_t instead of struct ucontext · ecdf06e1
      Harish authored
      
      
      With glibc 2.26 'struct ucontext' is removed to improve POSIX
      compliance, which breaks powerpc/alignment_handler selftest. Fix the
      test by using ucontext_t. Tested on ppc, works with older glibc
      versions as well.
      
      Fixes the following:
        alignment_handler.c: In function ‘sighandler’:
        alignment_handler.c:68:5: error: dereferencing pointer to incomplete type ‘struct ucontext’
          ucp->uc_mcontext.gp_regs[PT_NIP] += 4;
      
      Signed-off-by: default avatarHarish <harish@linux.vnet.ibm.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      ecdf06e1
    • Guenter Roeck's avatar
      powerpc/kdump: Fix powernv build break when KEXEC_CORE=n · 91096175
      Guenter Roeck authored
      If KEXEC_CORE is not enabled, powernv builds fail as follows.
      
        arch/powerpc/platforms/powernv/smp.c: In function 'pnv_smp_cpu_kill_self':
        arch/powerpc/platforms/powernv/smp.c:236:4: error:
        	implicit declaration of function 'crash_ipi_callback'
      
      Add dummy function calls, similar to kdump_in_progress(), to solve the
      problem.
      
      Fixes: 4145f358
      
       ("powernv/kdump: Fix cases where the kdump kernel can get HMI's")
      Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
      Acked-by: default avatarBalbir Singh <bsingharora@gmail.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      91096175
    • Guenter Roeck's avatar
      powerpc/pseries: Fix build break for SPLPAR=n and CPU hotplug · 82343484
      Guenter Roeck authored
      Commit e67e02a5 ("powerpc/pseries: Fix cpu hotplug crash with
      memoryless nodes") adds an unconditional call to
      find_and_online_cpu_nid(), which is only declared if CONFIG_PPC_SPLPAR
      is enabled. This results in the following build error if this is not
      the case.
      
        arch/powerpc/platforms/pseries/hotplug-cpu.o: In function `dlpar_online_cpu':
        arch/powerpc/platforms/pseries/hotplug-cpu.c:369:
        			undefined reference to `.find_and_online_cpu_nid'
      
      Follow the guideline provided by similar functions and provide a dummy
      function if CONFIG_PPC_SPLPAR is not enabled. This also moves the
      external function declaration into an include file where it should be.
      
      Fixes: e67e02a5
      
       ("powerpc/pseries: Fix cpu hotplug crash with memoryless nodes")
      Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
      [mpe: Change subject to emphasise the build fix]
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      82343484
    • Aneesh Kumar K.V's avatar
      powerpc/mm/hash64: Zero PGD pages on allocation · fc5c2f4a
      Aneesh Kumar K.V authored
      
      
      On powerpc we allocate page table pages from slab caches of different
      sizes. Currently we have a constructor that zeroes out the objects when
      we allocate them for the first time.
      
      We expect the objects to be zeroed out when we free the the object
      back to slab cache. This happens in the unmap path. For hugetlb pages
      we call huge_pte_get_and_clear() to do that.
      
      With the current configuration of page table size, both PUD and PGD
      level tables are allocated from the same slab cache. At the PUD level,
      we use the second half of the table to store the slot information. But
      we never clear that when unmapping.
      
      When such a freed object is then allocated for a PGD page, the second
      half of the page table page will not be zeroed as expected. This
      results in a kernel crash.
      
      Fix it by always clearing PGD pages when they're allocated.
      
      Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
      [mpe: Change log wording and formatting, add whitespace]
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      fc5c2f4a