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in the middle of clearing page tables allocated during mm_map() and mm_early_map()

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git-svn-id: svn://anubis/hos/trunk@99 5b3e749e-e535-0410-8002-a9bb6afbdfca
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josh 2010-02-01 01:47:19 +00:00
parent d41ffbbedc
commit ae5dc7df6f
1 changed files with 7 additions and 0 deletions
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7
kernel/mm/mm.cc
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@ -248,6 +248,12 @@ int mm_early_map(u32_t virtual_address, u32_t physical_address,
{ {
return 0; return 0;
} }
pagedirectory_entry_t * page_table_virt = (pagedirectory_entry_t *)
(page_table_phys + KERNEL_OFFSET);
for (int i = 0; i < NUM_PAGETABLE_ENTRIES; i++)
{
page_table_virt[i] = 0;
}
(*early_page_directory_ptr)[directory_index] = page_table_phys (*early_page_directory_ptr)[directory_index] = page_table_phys
| 0x1 << 2 /* PTs can be user mode */ | 0x1 << 2 /* PTs can be user mode */
| 0x1 << 1 /* writable */ | 0x1 << 1 /* writable */
@ -291,6 +297,7 @@ int mm_map(u32_t virtual_address, u32_t physical_address,
| 0x1 << 2 /* PTs can be user mode */ | 0x1 << 2 /* PTs can be user mode */
| 0x1 << 1 /* writable */ | 0x1 << 1 /* writable */
| 0x1; /* present */ | 0x1; /* present */
/* FIXME pagedirectory_entry_t * page_table = */
} }
pagedirectory_entry_t * page_table_entry = (pagedirectory_entry_t *) pagedirectory_entry_t * page_table_entry = (pagedirectory_entry_t *)