1. 26 Mar, 2015 2 commits
  2. 24 Mar, 2015 1 commit
    • Tyrel Datwyler's avatar
      powerpc/pseries: Introduce api_version to migration sysfs interface · 288a298c
      Tyrel Datwyler authored
      The /sys/kernel/mobility/migration interface was added all the way back
      in 2.6.37. However, the drmgr userspace tool was never augmented to use
      this interface to perfrom migrations. Instead it has continued using a
      faux rtas call coupled with performing the device tree update processing
      in userspace and communicating it back to the kernel via the ugly
      /proc/ppc64/ofdt interface.
      
      Up until 3.12 the device tree update code in the kernel was badly broken
      and bit rotting. This code was fixed in 3.12 and is now utilized by the
      kernel suspend code as of 3.15. The kernel is now better suited to
      handle the post-mobility fixup of the device tree and drmgr should be
      transitioned to using the sysfs migration interface.
      
      This patch introduces the api_version sysfs file to /sys/kernel/mobility
      as a means for drmgr to query the current implementation level of the
      kernel migration code. This initial versioning indicates it is capable
      of perfroming all current PAPR requirements for migration including the
      post-mobility firmware activation and device tree update.
      Signed-off-by: default avatarTyrel Datwyler <tyreld@linux.vnet.ibm.com>
      Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
      Cc: Cyril Bur <cyrilbur@gmail.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      288a298c
  3. 23 Mar, 2015 10 commits
  4. 20 Mar, 2015 1 commit
  5. 18 Mar, 2015 1 commit
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  7. 16 Mar, 2015 10 commits