diff options
Diffstat (limited to 'arch/x86/kernel/head_32.S')
| -rw-r--r-- | arch/x86/kernel/head_32.S | 55 |
1 files changed, 25 insertions, 30 deletions
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index fa8c1b8e09fb..bcece91dd311 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -183,13 +183,12 @@ default_entry: #ifdef CONFIG_X86_PAE /* - * In PAE mode swapper_pg_dir is statically defined to contain enough - * entries to cover the VMSPLIT option (that is the top 1, 2 or 3 - * entries). The identity mapping is handled by pointing two PGD - * entries to the first kernel PMD. + * In PAE mode initial_page_table is statically defined to contain + * enough entries to cover the VMSPLIT option (that is the top 1, 2 or 3 + * entries). The identity mapping is handled by pointing two PGD entries + * to the first kernel PMD. * - * Note the upper half of each PMD or PTE are always zero at - * this stage. + * Note the upper half of each PMD or PTE are always zero at this stage. */ #define KPMDS (((-__PAGE_OFFSET) >> 30) & 3) /* Number of kernel PMDs */ @@ -197,7 +196,7 @@ default_entry: xorl %ebx,%ebx /* %ebx is kept at zero */ movl $pa(__brk_base), %edi - movl $pa(swapper_pg_pmd), %edx + movl $pa(initial_pg_pmd), %edx movl $PTE_IDENT_ATTR, %eax 10: leal PDE_IDENT_ATTR(%edi),%ecx /* Create PMD entry */ @@ -226,14 +225,14 @@ default_entry: movl %eax, pa(max_pfn_mapped) /* Do early initialization of the fixmap area */ - movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,%eax - movl %eax,pa(swapper_pg_pmd+0x1000*KPMDS-8) + movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax + movl %eax,pa(initial_pg_pmd+0x1000*KPMDS-8) #else /* Not PAE */ page_pde_offset = (__PAGE_OFFSET >> 20); movl $pa(__brk_base), %edi - movl $pa(swapper_pg_dir), %edx + movl $pa(initial_page_table), %edx movl $PTE_IDENT_ATTR, %eax 10: leal PDE_IDENT_ATTR(%edi),%ecx /* Create PDE entry */ @@ -257,8 +256,8 @@ page_pde_offset = (__PAGE_OFFSET >> 20); movl %eax, pa(max_pfn_mapped) /* Do early initialization of the fixmap area */ - movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,%eax - movl %eax,pa(swapper_pg_dir+0xffc) + movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax + movl %eax,pa(initial_page_table+0xffc) #endif jmp 3f /* @@ -334,7 +333,7 @@ ENTRY(startup_32_smp) /* * Enable paging */ - movl pa(initial_page_table), %eax + movl $pa(initial_page_table), %eax movl %eax,%cr3 /* set the page table pointer.. */ movl %cr0,%eax orl $X86_CR0_PG,%eax @@ -614,8 +613,6 @@ ignore_int: .align 4 ENTRY(initial_code) .long i386_start_kernel -ENTRY(initial_page_table) - .long pa(swapper_pg_dir) /* * BSS section @@ -623,20 +620,18 @@ ENTRY(initial_page_table) __PAGE_ALIGNED_BSS .align PAGE_SIZE_asm #ifdef CONFIG_X86_PAE -swapper_pg_pmd: +initial_pg_pmd: .fill 1024*KPMDS,4,0 #else -ENTRY(swapper_pg_dir) +ENTRY(initial_page_table) .fill 1024,4,0 #endif -swapper_pg_fixmap: +initial_pg_fixmap: .fill 1024,4,0 -#ifdef CONFIG_X86_TRAMPOLINE -ENTRY(trampoline_pg_dir) - .fill 1024,4,0 -#endif ENTRY(empty_zero_page) .fill 4096,1,0 +ENTRY(swapper_pg_dir) + .fill 1024,4,0 /* * This starts the data section. @@ -645,20 +640,20 @@ ENTRY(empty_zero_page) __PAGE_ALIGNED_DATA /* Page-aligned for the benefit of paravirt? */ .align PAGE_SIZE_asm -ENTRY(swapper_pg_dir) - .long pa(swapper_pg_pmd+PGD_IDENT_ATTR),0 /* low identity map */ +ENTRY(initial_page_table) + .long pa(initial_pg_pmd+PGD_IDENT_ATTR),0 /* low identity map */ # if KPMDS == 3 - .long pa(swapper_pg_pmd+PGD_IDENT_ATTR),0 - .long pa(swapper_pg_pmd+PGD_IDENT_ATTR+0x1000),0 - .long pa(swapper_pg_pmd+PGD_IDENT_ATTR+0x2000),0 + .long pa(initial_pg_pmd+PGD_IDENT_ATTR),0 + .long pa(initial_pg_pmd+PGD_IDENT_ATTR+0x1000),0 + .long pa(initial_pg_pmd+PGD_IDENT_ATTR+0x2000),0 # elif KPMDS == 2 .long 0,0 - .long pa(swapper_pg_pmd+PGD_IDENT_ATTR),0 - .long pa(swapper_pg_pmd+PGD_IDENT_ATTR+0x1000),0 + .long pa(initial_pg_pmd+PGD_IDENT_ATTR),0 + .long pa(initial_pg_pmd+PGD_IDENT_ATTR+0x1000),0 # elif KPMDS == 1 .long 0,0 .long 0,0 - .long pa(swapper_pg_pmd+PGD_IDENT_ATTR),0 + .long pa(initial_pg_pmd+PGD_IDENT_ATTR),0 # else # error "Kernel PMDs should be 1, 2 or 3" # endif |