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ACPI: Only count valid srat memory structures

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Otherwise you could run into:
WARN_ON in numa_register_memblks(), because node_possible_map is zero

References: https://bugzilla.novell.com/show_bug.cgi?id=757888

On this machine (ProLiant ML570 G3) the SRAT table contains:
  - No processor affinities
  - One memory affinity structure (which is set disabled)

CC: Per Jessen <per@opensuse.org>
CC: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Thomas Renninger 2012-07-31 17:41:09 +02:00 committed by Len Brown
parent f3946fb6e5
commit 095adbb644
4 changed files with 17 additions and 13 deletions
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5
arch/ia64/kernel/acpi.c
View File

@ -497,7 +497,7 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
srat_num_cpus++;
}
void __init
int __init
acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
{
unsigned long paddr, size;
@ -512,7 +512,7 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
/* Ignore disabled entries */
if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
return;
return -1;
/* record this node in proximity bitmap */
pxm_bit_set(pxm);
@ -531,6 +531,7 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
p->size = size;
p->nid = pxm;
num_node_memblks++;
return 0;
}
void __init acpi_numa_arch_fixup(void)

15
arch/x86/mm/srat.c
View File

@ -142,23 +142,23 @@ static inline int save_add_info(void) {return 0;}
#endif
/* Callback for parsing of the Proximity Domain <-> Memory Area mappings */
void __init
int __init
acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
{
u64 start, end;
int node, pxm;
if (srat_disabled())
return;
return -1;
if (ma->header.length != sizeof(struct acpi_srat_mem_affinity)) {
bad_srat();
return;
return -1;
}
if ((ma->flags & ACPI_SRAT_MEM_ENABLED) == 0)
return;
return -1;
if ((ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) && !save_add_info())
return;
return -1;
start = ma->base_address;
end = start + ma->length;
pxm = ma->proximity_domain;
@ -168,12 +168,12 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
if (node < 0) {
printk(KERN_ERR "SRAT: Too many proximity domains.\n");
bad_srat();
return;
return -1;
}
if (numa_add_memblk(node, start, end) < 0) {
bad_srat();
return;
return -1;
}
node_set(node, numa_nodes_parsed);
@ -181,6 +181,7 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
printk(KERN_INFO "SRAT: Node %u PXM %u [mem %#010Lx-%#010Lx]\n",
node, pxm,
(unsigned long long) start, (unsigned long long) end - 1);
return 0;
}
void __init acpi_numa_arch_fixup(void) {}

8
drivers/acpi/numa.c
View File

@ -237,6 +237,8 @@ acpi_parse_processor_affinity(struct acpi_subtable_header *header,
return 0;
}
static int __initdata parsed_numa_memblks;
static int __init
acpi_parse_memory_affinity(struct acpi_subtable_header * header,
const unsigned long end)
@ -250,8 +252,8 @@ acpi_parse_memory_affinity(struct acpi_subtable_header * header,
acpi_table_print_srat_entry(header);
/* let architecture-dependent part to do it */
acpi_numa_memory_affinity_init(memory_affinity);
if (!acpi_numa_memory_affinity_init(memory_affinity))
parsed_numa_memblks++;
return 0;
}
@ -306,7 +308,7 @@ int __init acpi_numa_init(void)
if (cnt < 0)
return cnt;
else if (cnt == 0)
else if (!parsed_numa_memblks)
return -ENOENT;
return 0;
}

2
include/linux/acpi.h
View File

@ -96,7 +96,7 @@ void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
void acpi_numa_slit_init (struct acpi_table_slit *slit);
void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa);
void acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
void acpi_numa_arch_fixup(void);
#ifdef CONFIG_ACPI_HOTPLUG_CPU