diff options
Diffstat (limited to 'arch/i386/kernel/setup.c')
| -rw-r--r-- | arch/i386/kernel/setup.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c index f1682206d30..16d99444cf6 100644 --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -53,6 +53,7 @@ #include <asm/apic.h> #include <asm/e820.h> #include <asm/mpspec.h> +#include <asm/mmzone.h> #include <asm/setup.h> #include <asm/arch_hooks.h> #include <asm/sections.h> @@ -934,6 +935,24 @@ static void __init parse_cmdline_early (char ** cmdline_p) } /* + * reservetop=size reserves a hole at the top of the kernel address space which + * a hypervisor can load into later. Needed for dynamically loaded hypervisors, + * so relocating the fixmap can be done before paging initialization. + */ +static int __init parse_reservetop(char *arg) +{ + unsigned long address; + + if (!arg) + return -EINVAL; + + address = memparse(arg, &arg); + reserve_top_address(address); + return 0; +} +early_param("reservetop", parse_reservetop); + +/* * Callback for efi_memory_walk. */ static int __init @@ -1181,7 +1200,7 @@ static unsigned long __init setup_memory(void) void __init zone_sizes_init(void) { - unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0}; + unsigned long zones_size[MAX_NR_ZONES] = { 0, }; unsigned int max_dma, low; max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT; @@ -1258,7 +1277,7 @@ void __init setup_bootmem_allocator(void) */ find_smp_config(); #endif - + numa_kva_reserve(); #ifdef CONFIG_BLK_DEV_INITRD if (LOADER_TYPE && INITRD_START) { if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) { |