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| author | Carsten Otte <cotte@de.ibm.com> | 2008-03-25 18:47:44 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-04-27 12:00:50 +0300 |
| commit | fa5877439d5a062d91c3abd5a690483bbdb4268e (patch) | |
| tree | 0bd9c1794134d891678e3602ba78a6facec39d78 /include/asm-s390 | |
| parent | 85f8fffe3c2ab13f13526c46b5471fc22e98ccfe (diff) | |
| download | linux-fa5877439d5a062d91c3abd5a690483bbdb4268e.tar.gz | |
s390: KVM guest: detect when running on kvm
This patch adds functionality to detect if the kernel runs under the KVM hypervisor. A macro MACHINE_IS_KVM is exported for device drivers. This allows drivers to skip device detection if the systems runs non-virtualized. We also define a preferred console to avoid having the ttyS0, which is a line mode only console. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include/asm-s390')
| -rw-r--r-- | include/asm-s390/setup.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h index a76a6b8fd887..aaf4b518b940 100644 --- a/include/asm-s390/setup.h +++ b/include/asm-s390/setup.h @@ -62,6 +62,7 @@ extern unsigned long machine_flags; #define MACHINE_IS_VM (machine_flags & 1) #define MACHINE_IS_P390 (machine_flags & 4) #define MACHINE_HAS_MVPG (machine_flags & 16) +#define MACHINE_IS_KVM (machine_flags & 64) #define MACHINE_HAS_IDTE (machine_flags & 128) #define MACHINE_HAS_DIAG9C (machine_flags & 256) |