x86: reserve exact size of mptable

Impact: save a bit of RAM

Get the exact size for the reserve_bootmem() call.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <49AE4922.605@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index ae9060cb4481..e8192401da47 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -716,10 +716,10 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
 
                         if (!reserve)
                                 return 1;
-                        reserve_bootmem_generic(virt_to_phys(mpf), PAGE_SIZE,
+                        reserve_bootmem_generic(virt_to_phys(mpf), sizeof(*mpf),
                                         BOOTMEM_DEFAULT);
                         if (mpf->physptr) {
-                                unsigned long size = PAGE_SIZE;
+                                unsigned long size = get_mpc_size(mpf->physptr);
 #ifdef CONFIG_X86_32
                                 /*
                                  * We cannot access to MPC table to compute