lkml.org 
[lkml]   [2008]   [Jul]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH] x86: max_low_pfn_mapped fix #3
    Date

    try to merge the range with same page size in init_memory_mapping

    so when GBpages is not there, we could do 2M pages at same time.

    Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>

    ---
    arch/x86/mm/init_64.c | 14 ++++++++++++++
    1 file changed, 14 insertions(+)

    Index: linux-2.6/arch/x86/mm/init_64.c
    ===================================================================
    --- linux-2.6.orig/arch/x86/mm/init_64.c
    +++ linux-2.6/arch/x86/mm/init_64.c
    @@ -763,6 +763,20 @@ unsigned long __init_refok init_memory_m
    end_pfn = end>>PAGE_SHIFT;
    nr_range = save_mr(mr, nr_range, start_pfn, end_pfn, 0);

    + /* try to merge same page size and continuous */
    + for (i = 0; nr_range > 1 && i < nr_range - 1; i++) {
    + unsigned long old_start;
    + if (mr[i].end != mr[i+1].start ||
    + mr[i].page_size_mask != mr[i+1].page_size_mask)
    + continue;
    + /* move it */
    + old_start = mr[i].start;
    + memmove(&mr[i], &mr[i+1],
    + (nr_range - 1 - i) * sizeof (struct map_range));
    + mr[i].start = old_start;
    + nr_range--;
    + }
    +
    for (i = 0; i < nr_range; i++)
    printk(KERN_DEBUG " %010lx - %010lx page %s\n",
    mr[i].start, mr[i].end,

    \
     
     \ /
      Last update: 2008-07-12 23:37    [W:0.032 / U:89.172 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site