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authorHeiko Carstens <heiko.carstens@de.ibm.com>2009-07-24 12:39:49 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-07-24 12:41:00 +0200
commit5f954c3426190f7ae432a09abd62164d5d14c709 (patch)
treec1e9fdd5f374f01c45da82ec5d972626b7c7bd80 /arch/s390/kernel
parent4be3bd7849165e7efa6b0b35a23d6a3598d97465 (diff)
[S390] hibernation: fix lowcore handling
Our swsusp_arch_suspend() backend implementation disables prefixing by setting the contents of the prefix register to 0. However afterwards common code functions are called which might access percpu data structures. Since the lowcore contains e.g. the percpu base pointer this isn't a good idea. So fix this by copying the hibernating cpu's lowcore to absolute address zero. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r--arch/s390/kernel/early.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index f9b144049dc..8d15314381e 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -210,7 +210,7 @@ static noinline __init void detect_machine_type(void)
machine_flags |= MACHINE_FLAG_VM;
}
-static void early_pgm_check_handler(void)
+static __init void early_pgm_check_handler(void)
{
unsigned long addr;
const struct exception_table_entry *fixup;
@@ -222,7 +222,7 @@ static void early_pgm_check_handler(void)
S390_lowcore.program_old_psw.addr = fixup->fixup | PSW_ADDR_AMODE;
}
-void setup_lowcore_early(void)
+static noinline __init void setup_lowcore_early(void)
{
psw_t psw;