diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/e820.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/setup.c | 21 |
2 files changed, 22 insertions, 2 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 303a0e48f076..65ffd110a81b 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -135,6 +135,7 @@ static void __init e820_print_type(u32 type) printk(KERN_CONT "(usable)"); break; case E820_RESERVED: + case E820_RESERVED_EFI: printk(KERN_CONT "(reserved)"); break; case E820_ACPI: @@ -783,7 +784,7 @@ u64 __init early_reserve_e820(u64 startt, u64 sizet, u64 align) /* * Find the highest page frame number we have available */ -static unsigned long __init e820_end_pfn(unsigned long limit_pfn, unsigned type) +unsigned long __init e820_end_pfn(unsigned long limit_pfn, unsigned type) { int i; unsigned long last_pfn = 0; diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index cf0ef986cb6d..9a9e40fb091c 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -691,6 +691,8 @@ early_param("reservelow", parse_reservelow); void __init setup_arch(char **cmdline_p) { + unsigned long end_pfn; + #ifdef CONFIG_X86_32 memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); visws_early_detect(); @@ -932,7 +934,24 @@ void __init setup_arch(char **cmdline_p) init_gbpages(); /* max_pfn_mapped is updated here */ - max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); + end_pfn = max_low_pfn; + +#ifdef CONFIG_X86_64 + /* + * There may be regions after the last E820_RAM region that we + * want to include in the kernel direct mapping, such as + * EFI_RUNTIME_SERVICES_DATA. + */ + if (efi_enabled) { + unsigned long efi_end; + + efi_end = e820_end_pfn(MAXMEM>>PAGE_SHIFT, E820_RESERVED_EFI); + if (efi_end > max_low_pfn) + end_pfn = efi_end; + } +#endif + + max_low_pfn_mapped = init_memory_mapping(0, end_pfn << PAGE_SHIFT); max_pfn_mapped = max_low_pfn_mapped; #ifdef CONFIG_X86_64 |