diff options
Diffstat (limited to 'arch/s390/kernel/diag.c')
| -rw-r--r-- | arch/s390/kernel/diag.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c index ac7b8c8e3133..007e1795670e 100644 --- a/arch/s390/kernel/diag.c +++ b/arch/s390/kernel/diag.c @@ -52,6 +52,7 @@ static const struct diag_desc diag_map[NR_DIAG_STAT] = { [DIAG_STAT_X308] = { .code = 0x308, .name = "List-Directed IPL" }, [DIAG_STAT_X318] = { .code = 0x318, .name = "CP Name and Version Codes" }, [DIAG_STAT_X320] = { .code = 0x320, .name = "Certificate Store" }, + [DIAG_STAT_X49C] = { .code = 0x49c, .name = "Warning-Track Interruption" }, [DIAG_STAT_X500] = { .code = 0x500, .name = "Virtio Service" }, }; @@ -303,3 +304,19 @@ int diag26c(void *req, void *resp, enum diag26c_sc subcode) return diag_amode31_ops.diag26c(virt_to_phys(req), virt_to_phys(resp), subcode); } EXPORT_SYMBOL(diag26c); + +int diag49c(unsigned long subcode) +{ + int rc; + + diag_stat_inc(DIAG_STAT_X49C); + asm volatile( + " diag %[subcode],0,0x49c\n" + " ipm %[rc]\n" + " srl %[rc],28\n" + : [rc] "=d" (rc) + : [subcode] "d" (subcode) + : "cc"); + return rc; +} +EXPORT_SYMBOL(diag49c); |