x86: update mptable, fix

need to call early_reserve_e820() to preallocate mptable for 32bit

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

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index be1a99003677..4fa9f6c4542b 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -749,6 +749,8 @@ void __init setup_arch(char **cmdline_p)
          */
         max_pfn = e820_end_of_ram();
 
+        /* preallocate 4k for mptable mpc */
+        early_reserve_e820_mpc_new();
         /* update e820 for memory not covered by WB MTRRs */
         mtrr_bp_init();
         if (mtrr_trim_uncached_memory(max_pfn)) {