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[Launchpad Bug Tracker <1378894@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.16.0-22.29

---------------
linux (3.16.0-22.29) utopic; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1379321

  [ Andrew Morton ]

  * SAUCE: (no-up) mm-introduce-a-general-rcu-get_user_pages_fast-fix
    - LP: #1309221
  * SAUCE: (no-up) arm64-mm-enable-rcu-fast_gup-checkpatch-fixes
    - LP: #1309221

  [ Andy Whitcroft ]

  * [Config] CONFIG_PATA_MACIO=y
    - LP: #1378894
  * [Config] enable cloud tools on i386
    - LP: #1367399
  * SAUCE: scsi: hyper-v storsvc switch up to SPC-3
    - LP: #1354397
  * SAUCE: powerpc -- fix mm/slice.c switch include to linux/hugetlb.h

  [ dann frazier ]

  * [Config] CONFIG_HAVE_GENERIC_RCU_GUP=y
    - LP: #1309221

  [ Feng Kan ]

  * SAUCE: (no-up) power: reset: Add generic SYSCON register mapped reset
    - LP: #1284433
  * SAUCE: (no-up) arm64: dts: Add X-Gene reboot driver dts node
    - LP: #1284433

  [ Ian Munsie ]

  * SAUCE: (no-up) powerpc/cell: Move spu_handle_mm_fault() out of cell platform
  * SAUCE: (no-up) powerpc/cell: Move data segment faulting code out of cell platform
  * SAUCE: (no-up) powerpc/cell: Make spu_flush_all_slbs() generic
  * SAUCE: (no-up) powerpc/msi: Improve IRQ bitmap allocator
  * SAUCE: (no-up) powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize
  * SAUCE: (no-up) powerpc/powernv: Split out set MSI IRQ chip code
  * SAUCE: (no-up) cxl: Add new header for call backs and structs
  * SAUCE: (no-up) powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts
  * SAUCE: (no-up) powerpc/mm: Add new hash_page_mm()
  * SAUCE: (no-up) powerpc/opal: Add PHB to cxl mode call
  * SAUCE: (no-up) powerpc/mm: Add hooks for cxl
  * SAUCE: (no-up) cxl: Add base builtin support
  * SAUCE: (no-up) cxl: Driver code for powernv PCIe based cards for userspace access
  * SAUCE: (no-up) cxl: Add userspace header file
  * SAUCE: (no-up) cxl: Add driver to Kbuild and Makefiles
  * SAUCE: (no-up) cxl: Add documentation for userspace APIs
  * SAUCE: (no-up) cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking

  [ John Johansen ]

  * SAUCE: Revert: fix: only allow a single threaded process to ...
    - LP: #1371310

  [ Steve Capper ]

  * SAUCE: (no-up) mm: introduce a general RCU get_user_pages_fast()
    - LP: #1309221
  * SAUCE: (no-up) arm: mm: introduce special ptes for LPAE
    - LP: #1309221
  * SAUCE: (no-up) arm: mm: enable HAVE_RCU_TABLE_FREE logic
    - LP: #1309221
  * SAUCE: (no-up) arm: mm: enable RCU fast_gup
    - LP: #1309221
  * SAUCE: (no-up) arm64: mm: enable HAVE_RCU_TABLE_FREE logic
    - LP: #1309221
  * SAUCE: (no-up) arm64: mm: enable RCU fast_gup
    - LP: #1309221

  [ Tim Gardner ]

  * SAUCE: Added bnx2x/bnx2x-e1-7.8.19.0.fw
    - LP: #1378491
  * [Config] CONFIG_CXL=m
  * [Config] CONFIG_POWER_RESET_SYSCON=y for arm64
  * SAUCE: (no-up) Restrict CONFIG_POWER_RESET_SYSCON to arm64 only

  [ Upstream Kernel Changes ]

  * powerpc: implement vmemmap_list_free()
    - LP: #1378413
  * powerpc: implement vmemmap_remove_mapping() for BOOK3S
    - LP: #1378413
  * powerpc: implement vmemmap_free()
    - LP: #1378413
  * powerpc: start loop at section start of start in vmemmap_populated()
    - LP: #1378413
  * ARM: 8108/1: mm: Introduce {pte,pmd}_isset and {pte,pmd}_isclear
  * ARM: 8109/1: mm: Modify pte_write and pmd_write logic for LPAE
  * seccomp: create internal mode-setting function
    - LP: #1379020
  * seccomp: extract check/assign mode helpers
    - LP: #1379020
  * seccomp: split mode setting routines
    - LP: #1379020
  * seccomp: add "seccomp" syscall
    - LP: #1379020
  * ARM: add seccomp syscall
    - LP: #1379020
  * MIPS: add seccomp syscall
    - LP: #1379020
  * sched: move no_new_privs into new atomic flags
    - LP: #1379020
  * seccomp: split filter prep from check and apply
    - LP: #1379020
  * seccomp: introduce writer locking
    - LP: #1379020
  * seccomp: allow mode setting across threads
    - LP: #1379020
  * seccomp: implement SECCOMP_FILTER_FLAG_TSYNC
    - LP: #1379020
  * seccomp: Replace BUG(!spin_is_locked()) with assert_spin_lock
    - LP: #1379020
 -- Tim Gardner <tim.gardner@xxxxxxxxxxxxx>   Wed, 08 Oct 2014 07:35:30 -0400

** Changed in: linux (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1378894

Title:
  Set CONFIG_PATA_MACIO=y

Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  Had some time to fool around with Ubuntu on a PowerBook3,5. I
  discovered that the 3.16 kernel has a regression in it, it does not
  set CONFIG_PATA_MACIO=y. As a result /dev/sda is not available in the
  initramfs and the machine cannot mount the root filesystem. This is a
  regression from the 3.13.0-37 kernel in trusty.

  To reproduce:
  1) Set up a Powerbook or Powermac running Ubuntu (I have 12.04 on a Powerbook3,5, with the 3.13.0-37 kernel installed)
  2) Install the 3.16.0-21.28 kernel from https://launchpad.net/ubuntu/+source/linux/3.16.0-21.28/+build/6437990
  3) Reboot

  Expected results:
  The machine reboots normally

  Actual results:
  Boot fails in the initramfs with the error "gave up waiting for boot device"

  From the busy box prompt, running "modprobe pata_macio" then "exit"
  allows the machine to keep booting.

  A permanent workaround is to add pata_macio to /etc/initramfs-
  tools/modules and then update the initramfs

  There is a brief discussion of a similar problem in Precise in bug
  876982. CONFIG_PATA_MACIO=y was set in 3.2.0-2.6.

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