diff options
author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-03-18 12:52:37 -0700 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-04-26 22:51:08 +0200 |
commit | 1a27fc0a42162964d758e9d36d2d1b49c082a67c (patch) | |
tree | b94c4864edd0869d8ab7b25b9c3942a14bb6f9db /arch/x86/kernel/e820_64.c | |
parent | 8b3cd09ed23049fcb02479c6286744b36324ac9d (diff) |
x86_64: fix setup_node_bootmem to support big mem excluding with memmap
typical case: four sockets system, every node has 4g ram, and we are using:
memmap=10g$4g
to mask out memory on node1 and node2
when numa is enabled, early_node_mem is used to get node_data and node_bootmap.
if it can not get memory from the same node with find_e820_area(), it will
use alloc_bootmem to get buff from previous nodes.
so check it and print out some info about it.
need to move early_res_to_bootmem into every setup_node_bootmem.
and it takes range that node has. otherwise alloc_bootmem could return addr
that reserved early.
depends on "mm: make reserve_bootmem can crossed the nodes".
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/e820_64.c')
-rw-r--r-- | arch/x86/kernel/e820_64.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c index 79f0d52fa99a..645ee5e32a27 100644 --- a/arch/x86/kernel/e820_64.c +++ b/arch/x86/kernel/e820_64.c @@ -106,14 +106,19 @@ void __init free_early(unsigned long start, unsigned long end) early_res[j - 1].end = 0; } -void __init early_res_to_bootmem(void) +void __init early_res_to_bootmem(unsigned long start, unsigned long end) { int i; + unsigned long final_start, final_end; for (i = 0; i < MAX_EARLY_RES && early_res[i].end; i++) { struct early_res *r = &early_res[i]; - printk(KERN_INFO "early res: %d [%lx-%lx] %s\n", i, - r->start, r->end - 1, r->name); - reserve_bootmem_generic(r->start, r->end - r->start); + final_start = max(start, r->start); + final_end = min(end, r->end); + if (final_start >= final_end) + continue; + printk(KERN_INFO " early res: %d [%lx-%lx] %s\n", i, + final_start, final_end - 1, r->name); + reserve_bootmem_generic(final_start, final_end - final_start); } } |