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authorYinghai Lu <yinghai@kernel.org>2012-10-22 23:35:18 (GMT)
committerH. Peter Anvin <hpa@linux.intel.com>2012-10-24 18:52:21 (GMT)
commit6ede1fd3cb404c0016de6ac529df46d561bd558b (patch)
treec5537b527a5a065fff2bd9b33d003561a0d87206 /arch/x86
parent94777fc51b3ad85ff9f705ddf7cdd0eb3bbad5a6 (diff)
downloadlinux-6ede1fd3cb404c0016de6ac529df46d561bd558b.tar.xz
x86, mm: Trim memory in memblock to be page aligned
We will not map partial pages, so need to make sure memblock allocation will not allocate those bytes out. Also we will use for_each_mem_pfn_range() to loop to map memory range to keep them consistent. 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> Cc: <stable@vger.kernel.org>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/e820.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index ed858e9..df06ade 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -1077,6 +1077,9 @@ void __init memblock_x86_fill(void)
memblock_add(ei->addr, ei->size);
}
+ /* throw away partial pages */
+ memblock_trim_memory(PAGE_SIZE);
+
memblock_dump_all();
}