diff mbox series

[v5,02/12] s390x: SCLP: reporting the maximum nested topology entries

Message ID 20211209134643.143866-3-pmorel@linux.ibm.com
State New
Headers show
Series s390x: CPU Topology | expand

Commit Message

Pierre Morel Dec. 9, 2021, 1:46 p.m. UTC 
The maximum nested topology entries is used by the guest to know
how many nested topology are available on the machine.

Currently, reporting SCLP reports 0, which is the equivalent of
reporting the default value of 2.
Let's use the default SCLP value of 2 and increase this value in the
future patches implementing higher levels.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
 hw/s390x/sclp.c         | 1 +
 include/hw/s390x/sclp.h | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index 89c30a8a91..7797a45cef 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -125,6 +125,7 @@  static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
 
     /* CPU information */
     prepare_cpu_entries(machine, entries_start, &cpu_count);
+    read_info->stsi_parm = SCLP_READ_SCP_INFO_MNEST;
     read_info->entries_cpu = cpu_to_be16(cpu_count);
     read_info->offset_cpu = cpu_to_be16(offset_cpu);
     read_info->highest_cpu = cpu_to_be16(machine->smp.max_cpus - 1);
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index d3ade40a5a..c86c2c6619 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -116,7 +116,9 @@  typedef struct ReadInfo {
     SCCBHeader h;
     uint16_t rnmax;
     uint8_t rnsize;
-    uint8_t  _reserved1[16 - 11];       /* 11-15 */
+    uint8_t  _reserved1[15 - 11];       /* 11-15 */
+#define SCLP_READ_SCP_INFO_MNEST 2
+    uint8_t  stsi_parm;
     uint16_t entries_cpu;               /* 16-17 */
     uint16_t offset_cpu;                /* 18-19 */
     uint8_t  _reserved2[24 - 20];       /* 20-23 */