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[S390] add MACHINE_IS_LPAR flag

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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>
This commit is contained in:
Martin Schwidefsky
2010-02-26 22:37:38 +01:00
committed by Martin Schwidefsky
parent 432ac5e04b
commit 27d71602b4
5 changed files with 13 additions and 7 deletions
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9
arch/s390/kernel/early.c
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@@ -214,10 +214,13 @@ static __initdata struct sysinfo_3_2_2 vmms __aligned(PAGE_SIZE);
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 */