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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-02-27 16:27:38 -0500
committerH. Peter Anvin <hpa@zytor.com>2009-03-14 20:23:47 -0400
commitccf3fe02e35f4abca2589f99022cc25084bbd8ae (patch)
tree3bcf329116b8c689b4da1bb1a0d87bb587d3f3c7 /arch/x86/include/asm/setup.h
parent5368a2be34b96fda9c05d79424fa63a73ead04ed (diff)
x86-32: use brk segment for allocating initial kernel pagetable
Impact: use new interface instead of previous ad hoc implementation Rather than having special purpose init_pg_table_start/end variables to delimit the kernel pagetable built by head_32.S, just use the brk mechanism to extend the bss for the new pagetable. This patch removes init_pg_table_start/end and pg0, defines __brk_base (which is page-aligned and immediately follows _end), initializes the brk region to start there, and uses it for the 32-bit pagetable. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/setup.h')
-rw-r--r--arch/x86/include/asm/setup.h3
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index 45454f3fa121..366d36639940 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -109,9 +109,6 @@ void *extend_brk(size_t size, size_t align);
109void __init i386_start_kernel(void); 109void __init i386_start_kernel(void);
110extern void probe_roms(void); 110extern void probe_roms(void);
111 111
112extern unsigned long init_pg_tables_start;
113extern unsigned long init_pg_tables_end;
114
115#else 112#else
116void __init x86_64_start_kernel(char *real_mode); 113void __init x86_64_start_kernel(char *real_mode);
117void __init x86_64_start_reservations(char *real_mode_data); 114void __init x86_64_start_reservations(char *real_mode_data);