x86-32, mm: Add an initial page table for core bootstrapping

[pandora-kernel.git] / arch / x86 / kernel / setup.c

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index c3a4fbb..af6cf2b 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -83,7 +83,6 @@
 #include <asm/dmi.h>
 #include <asm/io_apic.h>
 #include <asm/ist.h>
-#include <asm/vmi.h>
 #include <asm/setup_arch.h>
 #include <asm/bios_ebda.h>
 #include <asm/cacheflush.h>
@@ -125,7 +124,6 @@ unsigned long max_pfn_mapped;
 RESERVE_BRK(dmi_alloc, 65536);
 #endif
 
-unsigned int boot_cpu_id __read_mostly;
 
 static __initdata unsigned long _brk_start = (unsigned long)__brk_base;
 unsigned long _brk_end = (unsigned long)__brk_base;
@@ -730,14 +728,25 @@ void __init setup_arch(char **cmdline_p)
 #ifdef CONFIG_X86_32
        memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
        visws_early_detect();
+
+       /*
+        * copy kernel address range established so far and switch
+        * to the proper swapper page table
+        */
+       clone_pgd_range(swapper_pg_dir     + KERNEL_PGD_BOUNDARY,
+                       initial_page_table + KERNEL_PGD_BOUNDARY,
+                       KERNEL_PGD_PTRS);
+
+       load_cr3(swapper_pg_dir);
+       __flush_tlb_all();
 #else
        printk(KERN_INFO "Command line: %s\n", boot_command_line);
 #endif
 
-       /* VMI may relocate the fixmap; do this before touching ioremap area */
-       vmi_init();
-
-       /* OFW also may relocate the fixmap */
+       /*
+        * If we have OLPC OFW, we might end up relocating the fixmap due to
+        * reserve_top(), so do this before touching the ioremap area.
+        */
        olpc_ofw_detect();
 
        early_trap_init();
@@ -838,9 +847,6 @@ void __init setup_arch(char **cmdline_p)
 
        x86_report_nx();
 
-       /* Must be before kernel pagetables are setup */
-       vmi_activate();
-
        /* after early param, so could get panic from serial */
        reserve_early_setup_data();
 
@@ -1014,7 +1020,12 @@ void __init setup_arch(char **cmdline_p)
        paging_init();
        x86_init.paging.pagetable_setup_done(swapper_pg_dir);
 
-       setup_trampoline_page_table();
+#ifdef CONFIG_X86_32
+       /* sync back kernel address range */
+       clone_pgd_range(initial_page_table + KERNEL_PGD_BOUNDARY,
+                       swapper_pg_dir     + KERNEL_PGD_BOUNDARY,
+                       KERNEL_PGD_PTRS);
+#endif
 
        tboot_probe();