diff options
Diffstat (limited to 'arch/x86/kernel/e820.c')
| -rw-r--r-- | arch/x86/kernel/e820.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 7da2bcd2b8eb..9976106b57ec 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -190,6 +190,7 @@ static void __init e820_print_type(enum e820_type type) case E820_TYPE_RAM: /* Fall through: */ case E820_TYPE_RESERVED_KERN: pr_cont("usable"); break; case E820_TYPE_RESERVED: pr_cont("reserved"); break; + case E820_TYPE_SOFT_RESERVED: pr_cont("soft reserved"); break; case E820_TYPE_ACPI: pr_cont("ACPI data"); break; case E820_TYPE_NVS: pr_cont("ACPI NVS"); break; case E820_TYPE_UNUSABLE: pr_cont("unusable"); break; @@ -1037,6 +1038,7 @@ static const char *__init e820_type_to_string(struct e820_entry *entry) case E820_TYPE_PRAM: return "Persistent Memory (legacy)"; case E820_TYPE_PMEM: return "Persistent Memory"; case E820_TYPE_RESERVED: return "Reserved"; + case E820_TYPE_SOFT_RESERVED: return "Soft Reserved"; default: return "Unknown E820 type"; } } @@ -1052,6 +1054,7 @@ static unsigned long __init e820_type_to_iomem_type(struct e820_entry *entry) case E820_TYPE_PRAM: /* Fall-through: */ case E820_TYPE_PMEM: /* Fall-through: */ case E820_TYPE_RESERVED: /* Fall-through: */ + case E820_TYPE_SOFT_RESERVED: /* Fall-through: */ default: return IORESOURCE_MEM; } } @@ -1064,6 +1067,7 @@ static unsigned long __init e820_type_to_iores_desc(struct e820_entry *entry) case E820_TYPE_PMEM: return IORES_DESC_PERSISTENT_MEMORY; case E820_TYPE_PRAM: return IORES_DESC_PERSISTENT_MEMORY_LEGACY; case E820_TYPE_RESERVED: return IORES_DESC_RESERVED; + case E820_TYPE_SOFT_RESERVED: return IORES_DESC_SOFT_RESERVED; case E820_TYPE_RESERVED_KERN: /* Fall-through: */ case E820_TYPE_RAM: /* Fall-through: */ case E820_TYPE_UNUSABLE: /* Fall-through: */ @@ -1078,11 +1082,12 @@ static bool __init do_mark_busy(enum e820_type type, struct resource *res) return true; /* - * Treat persistent memory like device memory, i.e. reserve it - * for exclusive use of a driver + * Treat persistent memory and other special memory ranges like + * device memory, i.e. reserve it for exclusive use of a driver */ switch (type) { case E820_TYPE_RESERVED: + case E820_TYPE_SOFT_RESERVED: case E820_TYPE_PRAM: case E820_TYPE_PMEM: return false; @@ -1285,6 +1290,9 @@ void __init e820__memblock_setup(void) if (end != (resource_size_t)end) continue; + if (entry->type == E820_TYPE_SOFT_RESERVED) + memblock_reserve(entry->addr, entry->size); + if (entry->type != E820_TYPE_RAM && entry->type != E820_TYPE_RESERVED_KERN) continue; |