diff options
| -rw-r--r-- | arch/x86/kernel/setup.c | 13 | ||||
| -rw-r--r-- | arch/x86/mm/numa.c | 6 | ||||
| -rw-r--r-- | drivers/acpi/numa.c | 23 | ||||
| -rw-r--r-- | include/linux/acpi.h | 8 |
4 files changed, 34 insertions, 16 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 915f5efefcf5..9c857f05cef0 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1056,6 +1056,15 @@ void __init setup_arch(char **cmdline_p) setup_bios_corruption_check(); #endif + /* + * In the memory hotplug case, the kernel needs info from SRAT to + * determine which memory is hotpluggable before allocating memory + * using memblock. + */ + acpi_boot_table_init(); + early_acpi_boot_init(); + early_parse_srat(); + #ifdef CONFIG_X86_32 printk(KERN_DEBUG "initial memory mapped: [mem 0x00000000-%#010lx]\n", (max_pfn_mapped<<PAGE_SHIFT) - 1); @@ -1101,10 +1110,6 @@ void __init setup_arch(char **cmdline_p) /* * Parse the ACPI tables for possible boot-time SMP configuration. */ - acpi_boot_table_init(); - - early_acpi_boot_init(); - initmem_init(); memblock_find_dma_reserve(); diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index e3963f52aaea..dfd30259eb89 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -560,10 +560,12 @@ static int __init numa_init(int (*init_func)(void)) for (i = 0; i < MAX_LOCAL_APIC; i++) set_apicid_to_node(i, NUMA_NO_NODE); - nodes_clear(numa_nodes_parsed); + /* + * Do not clear numa_nodes_parsed or zero numa_meminfo here, because + * SRAT was parsed earlier in early_parse_srat(). + */ nodes_clear(node_possible_map); nodes_clear(node_online_map); - memset(&numa_meminfo, 0, sizeof(numa_meminfo)); WARN_ON(memblock_set_node(0, ULLONG_MAX, MAX_NUMNODES)); numa_reset_distance(); diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index 33e609f63585..59844ee149be 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -282,10 +282,10 @@ acpi_table_parse_srat(enum acpi_srat_type id, handler, max_entries); } -int __init acpi_numa_init(void) -{ - int cnt = 0; +static int srat_mem_cnt; +void __init early_parse_srat(void) +{ /* * Should not limit number with cpu num that is from NR_CPUS or nr_cpus= * SRAT cpu entries could have different order with that in MADT. @@ -295,21 +295,24 @@ int __init acpi_numa_init(void) /* SRAT: Static Resource Affinity Table */ if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) { acpi_table_parse_srat(ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY, - acpi_parse_x2apic_affinity, 0); + acpi_parse_x2apic_affinity, 0); acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY, - acpi_parse_processor_affinity, 0); - cnt = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, - acpi_parse_memory_affinity, - NR_NODE_MEMBLKS); + acpi_parse_processor_affinity, 0); + srat_mem_cnt = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, + acpi_parse_memory_affinity, + NR_NODE_MEMBLKS); } +} +int __init acpi_numa_init(void) +{ /* SLIT: System Locality Information Table */ acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit); acpi_numa_arch_fixup(); - if (cnt < 0) - return cnt; + if (srat_mem_cnt < 0) + return srat_mem_cnt; else if (!parsed_numa_memblks) return -ENOENT; return 0; diff --git a/include/linux/acpi.h b/include/linux/acpi.h index bcbdd7484e58..f46cfd73a553 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -485,6 +485,14 @@ static inline bool acpi_driver_match_device(struct device *dev, #endif /* !CONFIG_ACPI */ +#ifdef CONFIG_ACPI_NUMA +void __init early_parse_srat(void); +#else +static inline void early_parse_srat(void) +{ +} +#endif + #ifdef CONFIG_ACPI void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, u32 pm1a_ctrl, u32 pm1b_ctrl)); |