x86: kill bad_ppro

so don't punish all other cpus without that problem when init highmem

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index f3ddba5ed9a7..9692aeb8ecae 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -68,6 +68,7 @@
 #include <asm/cacheflush.h>
 #include <asm/processor.h>
 #include <asm/efi.h>
+#include <asm/bugs.h>
 
 /* This value is set up by the early boot code to point to the value
    immediately after the boot time page tables.  It contains a *physical*
@@ -764,6 +765,14 @@ void __init setup_arch(char **cmdline_p)
         if (efi_enabled)
                 efi_init();
 
+        if (ppro_with_ram_bug()) {
+                e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
+                                  E820_RESERVED);
+                sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+                printk(KERN_INFO "fixed physical RAM map:\n");
+                e820_print_map("bad_ppro");
+        }
+
         e820_register_active_regions(0, 0, -1UL);
         /*
          * partially used pages are not usable - thus