From 1a27fc0a42162964d758e9d36d2d1b49c082a67c Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Tue, 18 Mar 2008 12:52:37 -0700 Subject: 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 Signed-off-by: Ingo Molnar --- arch/x86/kernel/e820_64.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'arch/x86/kernel/e820_64.c') diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c index 79f0d52fa99..645ee5e32a2 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); } } -- cgit v1.2.3-70-g09d2