1. 20 May, 2010 4 commits
  2. 19 May, 2010 1 commit
    • Huang Ying's avatar
      ACPI, IO memory pre-mapping and atomic accessing · 15651291
      Huang Ying authored
      Some ACPI IO accessing need to be done in atomic context. For example,
      APEI ERST operations may be used for permanent storage in hardware
      error handler. That is, it may be called in atomic contexts such as
      IRQ or NMI, etc. And, ERST/EINJ implement their operations via IO
      memory/port accessing.  But the IO memory accessing method provided by
      ACPI (acpi_read/acpi_write) maps the IO memory during it is accessed,
      so it can not be used in atomic context. To solve the issue, the IO
      memory should be pre-mapped during EINJ/ERST initializing. A linked
      list is used to record which memory area has been mapped, when memory
      is accessed in hardware error handler, search the linked list for the
      mapped virtual address from the given physical address.
      Signed-off-by: default avatarHuang Ying <ying.huang@intel.com>
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
      15651291
  3. 16 May, 2010 6 commits
  4. 15 May, 2010 17 commits
  5. 14 May, 2010 12 commits