x86, NUMA: Initialize and use remap allocator from setup_node_bootmem()
setup_node_bootmem() is taken from 64bit and doesn't use remap
allocator. It's about to be shared with 32bit so add support for it.
If NODE_DATA is remapped, it's noted in the debug message and node
locality check is skipped as the __pa() of the remapped address
doesn't reflect the actual physical address.
On 64bit, remap allocator becomes noop and doesn't affect the
behavior.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index b45caa3..a72317a 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -197,7 +197,9 @@
const u64 nd_low = PFN_PHYS(MAX_DMA_PFN);
const u64 nd_high = PFN_PHYS(max_pfn_mapped);
const size_t nd_size = roundup(sizeof(pg_data_t), PAGE_SIZE);
+ bool remapped = false;
u64 nd_pa;
+ void *nd;
int tnid;
/*
@@ -207,34 +209,45 @@
if (end && (end - start) < NODE_MIN_SIZE)
return;
+ /* initialize remap allocator before aligning to ZONE_ALIGN */
+ init_alloc_remap(nid, start, end);
+
start = roundup(start, ZONE_ALIGN);
printk(KERN_INFO "Initmem setup node %d %016Lx-%016Lx\n",
nid, start, end);
/*
- * Try to allocate node data on local node and then fall back to
- * all nodes. Never allocate in DMA zone.
+ * Allocate node data. Try remap allocator first, node-local
+ * memory and then any node. Never allocate in DMA zone.
*/
- nd_pa = memblock_x86_find_in_range_node(nid, nd_low, nd_high,
+ nd = alloc_remap(nid, nd_size);
+ if (nd) {
+ nd_pa = __pa(nd);
+ remapped = true;
+ } else {
+ nd_pa = memblock_x86_find_in_range_node(nid, nd_low, nd_high,
nd_size, SMP_CACHE_BYTES);
- if (nd_pa == MEMBLOCK_ERROR)
- nd_pa = memblock_find_in_range(nd_low, nd_high,
- nd_size, SMP_CACHE_BYTES);
- if (nd_pa == MEMBLOCK_ERROR) {
- pr_err("Cannot find %zu bytes in node %d\n", nd_size, nid);
- return;
+ if (nd_pa == MEMBLOCK_ERROR)
+ nd_pa = memblock_find_in_range(nd_low, nd_high,
+ nd_size, SMP_CACHE_BYTES);
+ if (nd_pa == MEMBLOCK_ERROR) {
+ pr_err("Cannot find %zu bytes in node %d\n",
+ nd_size, nid);
+ return;
+ }
+ memblock_x86_reserve_range(nd_pa, nd_pa + nd_size, "NODE_DATA");
+ nd = __va(nd_pa);
}
- memblock_x86_reserve_range(nd_pa, nd_pa + nd_size, "NODE_DATA");
/* report and initialize */
- printk(KERN_INFO " NODE_DATA [%016Lx - %016Lx]\n",
- nd_pa, nd_pa + nd_size - 1);
+ printk(KERN_INFO " NODE_DATA [%016Lx - %016Lx]%s\n",
+ nd_pa, nd_pa + nd_size - 1, remapped ? " (remapped)" : "");
tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT);
- if (tnid != nid)
+ if (!remapped && tnid != nid)
printk(KERN_INFO " NODE_DATA(%d) on node %d\n", nid, tnid);
- node_data[nid] = __va(nd_pa);
+ node_data[nid] = nd;
memset(NODE_DATA(nid), 0, sizeof(pg_data_t));
NODE_DATA(nid)->node_id = nid;
NODE_DATA(nid)->node_start_pfn = start >> PAGE_SHIFT;