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  1. 08 12月, 2011 1 次提交
    • D
      MIPS: Handle initmem in systems with kernel not in add_memory_region() mem · 43064c0c
      由 David Daney 提交于 
      This patch addresses a couple of related problems:

1) The kernel may reside in physical memory outside of the ranges set
   by plat_mem_setup().  If this is the case, init mem cannot be
   reused as it resides outside of the range of pages that the kernel
   memory allocators control.

2) initrd images might be loaded in physical memory outside of the
   ranges set by plat_mem_setup().  The memory likewise cannot be
   reused.  The patch doesn't handle this specific case, but the
   infrastructure is useful for future patches that do.

The crux of the problem is that there are memory regions that need be
memory_present(), but that cannot be free_bootmem() at the time of
arch_mem_init().  We create a new type of memory (BOOT_MEM_INIT_RAM)
for use with add_memory_region().  Then arch_mem_init() adds the init
mem with this type if the init mem is not already covered by existing
ranges.

When memory is being freed into the bootmem allocator, we skip the
BOOT_MEM_INIT_RAM ranges so they are not clobbered, but we do signal
them as memory_present().  This way when they are later freed, the
necessary memory manager structures have initialized and the Sparse
allocater is prevented from crashing.

The Octeon specific code that handled this case is removed, because
the new general purpose code handles the case.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1988/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
      43064c0c
  3. 30 10月, 2010 1 次提交
  5. 05 8月, 2010 1 次提交
  7. 17 12月, 2009 3 次提交
  9. 18 9月, 2009 1 次提交
    • W
      MIPS: Loongson: Add a machtype kernel command line argument · 3209e70e
      由 Wu Zhangjin 提交于 
      The difference between some loongson-based machines is very small, so, if
there is no necessary to add new kernel config options to cope with this
difference, it will be better to share the same kernel image file between
them, benefit from this, the linux distribution developers only have a need
to compile the kernel one time.

This machtype kernel command line argument will be used later to share the
same kernel image file between two different machines(menglong & yeeloong)
made by lemote.

Thanks very much to Zhang Le for cleaning up the machtype implementation.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
      3209e70e
  11. 11 10月, 2008 1 次提交
  13. 20 7月, 2008 1 次提交
  15. 16 7月, 2008 4 次提交
  17. 29 1月, 2008 2 次提交
  19. 12 10月, 2007 3 次提交
  21. 01 8月, 2007 2 次提交
  23. 11 7月, 2007 6 次提交
  25. 11 5月, 2007 2 次提交
  27. 09 5月, 2007 1 次提交
  29. 07 2月, 2007 1 次提交
  31. 09 12月, 2006 1 次提交
  33. 04 10月, 2006 1 次提交
  35. 27 9月, 2006 1 次提交
  37. 20 6月, 2006 3 次提交
  39. 30 10月, 2005 4 次提交