[S390] add MACHINE_IS_LPAR flag
Introduce the MACHINE_IS_LPAR flag for code that should only be
executed if Linux is running in an LPAR.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index e49e9e0..02e4586 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -214,10 +214,13 @@
static noinline __init void detect_machine_type(void)
{
- /* No VM information? Looks like LPAR */
- if (stsi(&vmms, 3, 2, 2) == -ENOSYS)
+ /* Check current-configuration-level */
+ if ((stsi(NULL, 0, 0, 0) >> 28) <= 2) {
+ S390_lowcore.machine_flags |= MACHINE_FLAG_LPAR;
return;
- if (!vmms.count)
+ }
+ /* Get virtual-machine cpu information. */
+ if (stsi(&vmms, 3, 2, 2) == -ENOSYS || !vmms.count)
return;
/* Running under KVM? If not we assume z/VM */
