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>
diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c
index 79f0d52..645ee5e 100644
--- a/arch/x86/kernel/e820_64.c
+++ b/arch/x86/kernel/e820_64.c
@@ -106,14 +106,19 @@
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);
}
}
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index b04e2c0..60e64c8 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -190,6 +190,7 @@
bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, end_pfn);
e820_register_active_regions(0, start_pfn, end_pfn);
free_bootmem_with_active_regions(0, end_pfn);
+ early_res_to_bootmem(0, end_pfn<<PAGE_SHIFT);
reserve_bootmem(bootmap, bootmap_size, BOOTMEM_DEFAULT);
}
#endif
@@ -421,8 +422,6 @@
contig_initmem_init(0, end_pfn);
#endif
- early_res_to_bootmem();
-
dma32_reserve_bootmem();
#ifdef CONFIG_ACPI_SLEEP