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[PATCH] x86-64: Improve error handling for overlapping PXMs in SRAT. 

- Report PXMs instead of nodes
- Report the correct PXM, not always the one of node 1.
- Only warn for the case of a PXM overlapping by itself

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2005-09-12 18:49:24 +02:00 committed by Linus Torvalds
parent 2e8ad43ec0
commit 05d1fa4bf6
1 changed files with 13 additions and 6 deletions
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19
arch/x86_64/mm/srat.c
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@ -25,6 +25,8 @@ static nodemask_t nodes_found __initdata;
static struct node nodes[MAX_NUMNODES] __initdata; static struct node nodes[MAX_NUMNODES] __initdata;
static __u8 pxm2node[256] = { [0 ... 255] = 0xff }; static __u8 pxm2node[256] = { [0 ... 255] = 0xff };
static int node_to_pxm(int n);
int pxm_to_node(int pxm) int pxm_to_node(int pxm)
{ {
if ((unsigned)pxm >= 256) if ((unsigned)pxm >= 256)
@ -53,9 +55,9 @@ static __init int conflicting_nodes(unsigned long start, unsigned long end)
if (nd->start == nd->end) if (nd->start == nd->end)
continue; continue;
if (nd->end > start && nd->start < end) if (nd->end > start && nd->start < end)
return 1; return i;
if (nd->end == end && nd->start == start) if (nd->end == end && nd->start == start)
return 1; return i;
} }
return -1; return -1;
} }
@ -139,10 +141,15 @@ acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma)
printk(KERN_INFO "SRAT: hot plug zone found %lx - %lx \n", printk(KERN_INFO "SRAT: hot plug zone found %lx - %lx \n",
start, end); start, end);
i = conflicting_nodes(start, end); i = conflicting_nodes(start, end);
if (i >= 0) { if (i == node) {
printk(KERN_WARNING
"SRAT: Warning: PXM %d (%lx-%lx) overlaps with itself (%Lx-%Lx)\n",
pxm, start, end, nodes[i].start, nodes[i].end);
} else if (i >= 0) {
printk(KERN_ERR printk(KERN_ERR
"SRAT: pxm %d overlap %lx-%lx with node %d(%Lx-%Lx)\n", "SRAT: PXM %d (%lx-%lx) overlaps with PXM %d (%Lx-%Lx)\n",
pxm, start, end, i, nodes[i].start, nodes[i].end); pxm, start, end, node_to_pxm(i),
nodes[i].start, nodes[i].end);
bad_srat(); bad_srat();
return; return;
} }
@ -197,7 +204,7 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end)
return 0; return 0;
} }
int node_to_pxm(int n) static int node_to_pxm(int n)
{ {
int i; int i;
if (pxm2node[n] == n) if (pxm2node[n] == n)