Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (81 commits)
  [S390] remove duplicated #includes
  [S390] cpumask: use mm_cpumask() wrapper
  [S390] cpumask: Use accessors code.
  [S390] cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.
  [S390] cpumask: remove cpu_coregroup_map
  [S390] fix clock comparator save area usage
  [S390] Add hwcap flag for the etf3 enhancement facility
  [S390] Ensure that ipl panic notifier is called late.
  [S390] fix dfp elf hwcap/facility bit detection
  [S390] smp: perform initial cpu reset before starting a cpu
  [S390] smp: fix memory leak on __cpu_up
  [S390] ipl: Improve checking logic and remove switch defaults.
  [S390] s390dbf: Remove needless check for NULL pointer.
  [S390] s390dbf: Remove redundant initilizations.
  [S390] use kzfree()
  [S390] BUG to BUG_ON changes
  [S390] zfcpdump: Prevent zcore from beeing built as a kernel module.
  [S390] Use csum_partial in checksum.h
  [S390] cleanup lowcore.h
  [S390] eliminate ipl_device from lowcore
  ...

1 files changed, 13 insertions, 10 deletions

diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 2a2ca268b1dd..4d221c81c849 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -6,6 +6,7 @@
  *               Heiko Carstens <heiko.carstens@de.ibm.com>
  */
 
+#include <linux/compiler.h>
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/string.h>
@@ -20,6 +21,7 @@
 #include <asm/processor.h>
 #include <asm/sections.h>
 #include <asm/setup.h>
+#include <asm/sysinfo.h>
 #include <asm/cpcmd.h>
 #include <asm/sclp.h>
 #include "entry.h"
@@ -173,19 +175,21 @@ static noinline __init void init_kernel_storage_key(void)
                 page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY);
 }
 
+static __initdata struct sysinfo_3_2_2 vmms __aligned(PAGE_SIZE);
+
 static noinline __init void detect_machine_type(void)
 {
-        struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data;
-
-        get_cpu_id(&S390_lowcore.cpu_data.cpu_id);
-
-        /* Running under z/VM ? */
-        if (cpuinfo->cpu_id.version == 0xff)
-                machine_flags |= MACHINE_FLAG_VM;
+        /* No VM information? Looks like LPAR */
+        if (stsi(&vmms, 3, 2, 2) == -ENOSYS)
+                return;
+        if (!vmms.count)
+                return;
 
-        /* Running under KVM ? */
-        if (cpuinfo->cpu_id.version == 0xfe)
+        /* Running under KVM? If not we assume z/VM */
+        if (!memcmp(vmms.vm[0].cpi, "\xd2\xe5\xd4", 3))
                 machine_flags |= MACHINE_FLAG_KVM;
+        else
+                machine_flags |= MACHINE_FLAG_VM;
 }
 
 static __init void early_pgm_check_handler(void)
@@ -348,7 +352,6 @@ static void __init setup_boot_command_line(void)
 
         /* copy arch command line */
         strlcpy(boot_command_line, COMMAND_LINE, ARCH_COMMAND_LINE_SIZE);
-        boot_command_line[ARCH_COMMAND_LINE_SIZE - 1] = 0;
 
         /* append IPL PARM data to the boot command line */
         if (MACHINE_IS_VM) {