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authorYinghai Lu <yinghai@kernel.org>2013-01-24 12:20:05 -0800
committerH. Peter Anvin <hpa@linux.intel.com>2013-01-29 15:26:35 -0800
commit0e691cf824f76adefb4498fe39c300aba2c2575a (patch)
tree6e61f59e7f100eac02a9aa7e064eaaa34e4e1904 /arch/x86/mm/init.c
parent9ebdc79f7a177d3098b89ba8ef2dd2b235163685 (diff)
x86, kexec, 64bit: Only set ident mapping for ram.
We should set mappings only for usable memory ranges under max_pfn Otherwise causes same problem that is fixed by x86, mm: Only direct map addresses that are marked as E820_RAM This patch exposes pfn_mapped array, and only sets ident mapping for ranges in that array. This patch relies on new kernel_ident_mapping_init that could handle existing pgd/pud between different calls. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1359058816-7615-25-git-send-email-yinghai@kernel.org Cc: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/mm/init.c')
-rw-r--r--arch/x86/mm/init.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 3364a7643a4c..d41815265a0b 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -302,8 +302,8 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range,
return nr_range;
}
-static struct range pfn_mapped[E820_X_MAX];
-static int nr_pfn_mapped;
+struct range pfn_mapped[E820_X_MAX];
+int nr_pfn_mapped;
static void add_pfn_range_mapped(unsigned long start_pfn, unsigned long end_pfn)
{