Re: [PATCH part5 5/7] memblock, mem_hotplug: Make memblock skip hotpluggable regions by default.

2013-08-14 Thread Tang Chen
On 08/15/2013 05:54 AM, Naoya Horiguchi wrote: > On Thu, Aug 08, 2013 at 06:16:17PM +0800, Tang Chen wrote: >> --- a/mm/memblock.c >> +++ b/mm/memblock.c > ... >> @@ -719,6 +723,10 @@ void __init_memblock __next_free_mem_range_rev(u64 >> *idx, int nid, >> if (nid != MAX_NUMNODES&& ni

Re: [PATCH part5 5/7] memblock, mem_hotplug: Make memblock skip hotpluggable regions by default.

2013-08-14 Thread Naoya Horiguchi
On Thu, Aug 08, 2013 at 06:16:17PM +0800, Tang Chen wrote: > --- a/mm/memblock.c > +++ b/mm/memblock.c ... > @@ -719,6 +723,10 @@ void __init_memblock __next_free_mem_range_rev(u64 *idx, > int nid, > if (nid != MAX_NUMNODES && nid != memblock_get_region_node(m)) >

[PATCH part5 5/7] memblock, mem_hotplug: Make memblock skip hotpluggable regions by default.

2013-08-08 Thread Tang Chen
Linux kernel cannot migrate pages used by the kernel. As a result, hotpluggable memory used by the kernel won't be able to be hot-removed. To solve this problem, the basic idea is to prevent memblock from allocating hotpluggable memory for the kernel at early time, and arrange all hotpluggable memo