[S390] Cleanup struct _lowcore usage and defines.

[karo-tx-linux.git] / arch / s390 / kernel / setup.c

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index d9fb98cde0fa1bf5812df068c821cdc31537a7a9..77a63ae419f00c8196a5e8cc944ac6224795ad2f 100644 (file)
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -396,15 +396,12 @@ static void __init
 setup_lowcore(void)
 {
        struct _lowcore *lc;
-       int lc_pages;
 
        /*
         * Setup lowcore for boot cpu
         */
-       lc_pages = sizeof(void *) == 8 ? 2 : 1;
-       lc = (struct _lowcore *)
-               __alloc_bootmem(lc_pages * PAGE_SIZE, lc_pages * PAGE_SIZE, 0);
-       memset(lc, 0, lc_pages * PAGE_SIZE);
+       BUILD_BUG_ON(sizeof(struct _lowcore) != LC_PAGES * 4096);
+       lc = __alloc_bootmem(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0);
        lc->restart_psw.mask = PSW_BASE_BITS | PSW_DEFAULT_KEY;
        lc->restart_psw.addr =
                PSW_ADDR_AMODE | (unsigned long) restart_int_handler;