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authorVivek Goyal <vgoyal@in.ibm.com>2007-05-02 13:27:07 -0400
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 13:27:07 -0400
commitcfd243d4af7c7f8f52f5cb99d3932d9074b039ff (patch)
treeae9b25a414117d0d39b535e5701d5a1b3f907558 /include/asm-x86_64/pgtable.h
parentbdb96a6614cfaba24e23dd9de4040c068c3af19b (diff)
[PATCH] x86-64: Remove the identity mapping as early as possible
With the rewrite of the SMP trampoline and the early page allocator there is nothing that needs identity mapped pages, once we start executing C code. So add zap_identity_mappings into head64.c and remove zap_low_mappings() from much later in the code. The functions are subtly different thus the name change. This also kills boot_level4_pgt which was from an earlier attempt to move the identity mappings as early as possible, and is now no longer needed. Essentially I have replaced boot_level4_pgt with trampoline_level4_pgt in trampoline.S Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'include/asm-x86_64/pgtable.h')
-rw-r--r--include/asm-x86_64/pgtable.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/asm-x86_64/pgtable.h b/include/asm-x86_64/pgtable.h
index 5a5d43b3ef5d..703f0243f27a 100644
--- a/include/asm-x86_64/pgtable.h
+++ b/include/asm-x86_64/pgtable.h
@@ -17,7 +17,6 @@ extern pud_t level3_kernel_pgt[512];
17extern pud_t level3_ident_pgt[512]; 17extern pud_t level3_ident_pgt[512];
18extern pmd_t level2_kernel_pgt[512]; 18extern pmd_t level2_kernel_pgt[512];
19extern pgd_t init_level4_pgt[]; 19extern pgd_t init_level4_pgt[];
20extern pgd_t boot_level4_pgt[];
21extern unsigned long __supported_pte_mask; 20extern unsigned long __supported_pte_mask;
22 21
23#define swapper_pg_dir init_level4_pgt 22#define swapper_pg_dir init_level4_pgt