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authorHeinz Graalfs <graalfs@linux.vnet.ibm.com>2012-06-11 16:06:59 +0200
committerMarcelo Tosatti <mtosatti@redhat.com>2012-06-13 20:53:45 -0300
commitcd1834591fe9564720ac4b0193bf1c790fe89f0d (patch)
treed705284edf49d5054f6558db3c1f827179984bc4 /arch/s390
parent61bde82caee95426bf1ad53fefc8dc691b8ba37c (diff)
downloadlinux-linaro-stable-cd1834591fe9564720ac4b0193bf1c790fe89f0d.tar.gz
KVM: s390: Perform early event mask processing during boot
For processing under KVM it is required to detect the actual SCLP console type in order to set it as preferred console. Signed-off-by: Heinz Graalfs <graalfs@linux.vnet.ibm.com> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/sclp.h2
-rw-r--r--arch/s390/kernel/setup.c12
2 files changed, 11 insertions, 3 deletions
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
index bf238c55740b..173f07aaeb2b 100644
--- a/arch/s390/include/asm/sclp.h
+++ b/arch/s390/include/asm/sclp.h
@@ -55,5 +55,7 @@ int sclp_chp_configure(struct chp_id chpid);
int sclp_chp_deconfigure(struct chp_id chpid);
int sclp_chp_read_info(struct sclp_chp_info *info);
void sclp_get_ipl_info(struct sclp_ipl_info *info);
+bool sclp_has_linemode(void);
+bool sclp_has_vt220(void);
#endif /* _ASM_S390_SCLP_H */
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 489d1d8d96b0..e86bca6f975c 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -63,6 +63,7 @@
#include <asm/kvm_virtio.h>
#include <asm/diag.h>
#include <asm/os_info.h>
+#include <asm/sclp.h>
#include "entry.h"
long psw_kernel_bits = PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_PRIMARY |
@@ -138,9 +139,14 @@ __setup("condev=", condev_setup);
static void __init set_preferred_console(void)
{
- if (MACHINE_IS_KVM)
- add_preferred_console("hvc", 0, NULL);
- else if (CONSOLE_IS_3215 || CONSOLE_IS_SCLP)
+ if (MACHINE_IS_KVM) {
+ if (sclp_has_vt220())
+ add_preferred_console("ttyS", 1, NULL);
+ else if (sclp_has_linemode())
+ add_preferred_console("ttyS", 0, NULL);
+ else
+ add_preferred_console("hvc", 0, NULL);
+ } else if (CONSOLE_IS_3215 || CONSOLE_IS_SCLP)
add_preferred_console("ttyS", 0, NULL);
else if (CONSOLE_IS_3270)
add_preferred_console("tty3270", 0, NULL);