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s390/sclp: introduce check for the SIGP Interpretation Facility

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This patch introduces the infrastructure to check whether the SIGP
Interpretation Facility is installed on all VCPUs in the configuration.

Signed-off-by: David Hildenbrand <[email protected]>
Acked-by: Cornelia Huck <[email protected]>
Signed-off-by: Christian Borntraeger <[email protected]>
This commit is contained in:
David Hildenbrand 2014-10-14 12:11:02 +02:00 • committed by Christian Borntraeger
commit d614be05c8
2 changed files with 11 additions and 1 deletions
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8
drivers/s390/char/sclp_early.c
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@ -49,6 +49,7 @@ static unsigned long sclp_hsa_size;
static unsigned int sclp_max_cpu;
static struct sclp_ipl_info sclp_ipl_info;
static unsigned char sclp_siif;
static unsigned char sclp_sigpif;
static u32 sclp_ibc;
u64 sclp_facilities;
@ -131,6 +132,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
if (boot_cpu_address != cpue->address)
continue;
sclp_siif = cpue->siif;
sclp_sigpif = cpue->sigpif;
break;
}
@ -172,6 +174,12 @@ int sclp_has_siif(void)
}
EXPORT_SYMBOL(sclp_has_siif);
int sclp_has_sigpif(void)
{
return sclp_sigpif;
}
EXPORT_SYMBOL(sclp_has_sigpif);
unsigned int sclp_get_ibc(void)
{
return sclp_ibc;