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| author | Yinghai Lu <yinghai@kernel.org> | 2012-10-22 16:35:18 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-31 10:10:32 -0700 |
| commit | 2865269348c0cf5448544f971d1c64afe7cdbc98 (patch) | |
| tree | d023b7d1adabdde5bb038edacc9adf39f078dc67 | |
| parent | 31fd7858aab67b6c4104cd7323a69f257a170572 (diff) | |
| download | linux-stable-2865269348c0cf5448544f971d1c64afe7cdbc98.tar.gz linux-stable-2865269348c0cf5448544f971d1c64afe7cdbc98.tar.bz2 linux-stable-2865269348c0cf5448544f971d1c64afe7cdbc98.zip | |
x86, mm: Use memblock memory loop instead of e820_RAM
commit 1f2ff682ac951ed82cc043cf140d2851084512df upstream.
We need to handle E820_RAM and E820_RESERVED_KERNEL at the same time.
Also memblock has page aligned range for ram, so we could avoid mapping
partial pages.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/CAE9FiQVZirvaBMFYRfXMmWEcHbKSicQEHz4VAwUv0xFCk51ZNw@mail.gmail.com
Acked-by: Jacob Shin <jacob.shin@amd.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kernel/setup.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 3e515b457b6c..5cee802dd5f4 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -920,18 +920,19 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_X86_64 if (max_pfn > max_low_pfn) { int i; - for (i = 0; i < e820.nr_map; i++) { - struct e820entry *ei = &e820.map[i]; + unsigned long start, end; + unsigned long start_pfn, end_pfn; - if (ei->addr + ei->size <= 1UL << 32) - continue; + for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, + NULL) { - if (ei->type == E820_RESERVED) + end = PFN_PHYS(end_pfn); + if (end <= (1UL<<32)) continue; + start = PFN_PHYS(start_pfn); max_pfn_mapped = init_memory_mapping( - ei->addr < 1UL << 32 ? 1UL << 32 : ei->addr, - ei->addr + ei->size); + max((1UL<<32), start), end); } /* can we preseve max_low_pfn ?*/ |