diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-08 11:14:58 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 11:14:58 +0200 |
| commit | 3de352bbd86f890dd0c5e1c09a6a1b0b29e0f8ce (patch) | |
| tree | d4c5eba8cd2abefd7c9f16d089393f0f5999cf63 /arch/x86/mm/init_64.c | |
| parent | 1b8ba39a3fad9c58532f6dad12c94d6e675be656 (diff) | |
| parent | 9340e1ccdf7b9b22a2be7f51cd74e8b5e11961bf (diff) | |
Merge branch 'x86/mpparse' into x86/devel
Conflicts:
arch/x86/Kconfig
arch/x86/kernel/io_apic_32.c
arch/x86/kernel/setup_64.c
arch/x86/mm/init_32.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/init_64.c')
| -rw-r--r-- | arch/x86/mm/init_64.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 48623ae628f..18c6a006e40 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -48,6 +48,18 @@ #include <asm/numa.h> #include <asm/cacheflush.h> +/* + * PFN of last memory page. + */ +unsigned long end_pfn; + +/* + * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries. + * The direct mapping extends to max_pfn_mapped, so that we can directly access + * apertures, ACPI and other tables without having to play with fixmaps. + */ +unsigned long max_pfn_mapped; + static unsigned long dma_reserve __initdata; DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); @@ -808,12 +820,14 @@ void free_initrd_mem(unsigned long start, unsigned long end) } #endif -void __init reserve_bootmem_generic(unsigned long phys, unsigned len) +int __init reserve_bootmem_generic(unsigned long phys, unsigned long len, + int flags) { #ifdef CONFIG_NUMA int nid, next_nid; #endif unsigned long pfn = phys >> PAGE_SHIFT; + int ret; if (pfn >= end_pfn) { /* @@ -821,11 +835,11 @@ void __init reserve_bootmem_generic(unsigned long phys, unsigned len) * firmware tables: */ if (pfn < max_pfn_mapped) - return; + return -EFAULT; printk(KERN_ERR "reserve_bootmem: illegal reserve %lx %u\n", phys, len); - return; + return -EFAULT; } /* Should check here against the e820 map to avoid double free */ @@ -833,9 +847,13 @@ void __init reserve_bootmem_generic(unsigned long phys, unsigned len) nid = phys_to_nid(phys); next_nid = phys_to_nid(phys + len - 1); if (nid == next_nid) - reserve_bootmem_node(NODE_DATA(nid), phys, len, BOOTMEM_DEFAULT); + ret = reserve_bootmem_node(NODE_DATA(nid), phys, len, flags); else - reserve_bootmem(phys, len, BOOTMEM_DEFAULT); + ret = reserve_bootmem(phys, len, flags); + + if (ret != 0) + return ret; + #else reserve_bootmem(phys, len, BOOTMEM_DEFAULT); #endif @@ -844,6 +862,8 @@ void __init reserve_bootmem_generic(unsigned long phys, unsigned len) dma_reserve += len / PAGE_SIZE; set_dma_reserve(dma_reserve); } + + return 0; } int kern_addr_valid(unsigned long addr) |