diff options
Diffstat (limited to 'arch/x86/realmode/init.c')
| -rw-r--r-- | arch/x86/realmode/init.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c index 8e6ab613785..cbca565af5b 100644 --- a/arch/x86/realmode/init.c +++ b/arch/x86/realmode/init.c @@ -78,21 +78,8 @@ void __init setup_real_mode(void) *trampoline_cr4_features = read_cr4(); trampoline_pgd = (u64 *) __va(real_mode_header->trampoline_pgd); - - /* - * Create an identity mapping for all of physical memory. - */ - for (i = 0; i <= pgd_index(max_pfn << PAGE_SHIFT); i++) { - int index = pgd_index(PAGE_OFFSET) + i; - - trampoline_pgd[i] = (u64)pgd_val(swapper_pg_dir[index]); - } - - /* - * Copy the upper-half of the kernel pages tables. - */ - for (i = pgd_index(PAGE_OFFSET); i < PTRS_PER_PGD; i++) - trampoline_pgd[i] = (u64)pgd_val(swapper_pg_dir[i]); + trampoline_pgd[0] = __pa(level3_ident_pgt) + _KERNPG_TABLE; + trampoline_pgd[511] = __pa(level3_kernel_pgt) + _KERNPG_TABLE; #endif } |