Hi,
new version of the series with corrections.
When facility 11 is available inside the S390x architecture, 2 new
instructions are available: PTF and STSI with function code 15.
Let's check their availability in QEMU/KVM and their coherence
with the CPU topology provided to the QEMU -smp parameter and as
argument for the test.
To run these tests successfully you will need both the Linux and the
QEMU patches, at least the following or newer patches:
https://lkml.org/lkml/2021/8/3/201
https://lists.nongnu.org/archive/html/qemu-s390x/2021-07/msg00165.html
Then if you have the text you can run directly the unit test or directly
start QEMU with:
# ./s390x-run s390x/topology.elf \
-smp 5,drawers=2,books=3,sockets=4,cores=4,maxcpus=96 \
-append "-d 2 -b 3 -s 4 -c 4 -m 96"
If you do not have the patches you can still use the test but only with
the first two topology levels like in:
# ./s390x-run s390x/topology.elf \
-smp 5,sockets=24,cores=4,maxcpus=96 \
-append "-s 24 -c 4 -m 96"
Of course the declaration of the number of socket and core must be
coherent.
Regards,
Pierre
Pierre Morel (4):
s390x: lib: Add SCLP toplogy nested level
s390x: stsi: Define vm_is_kvm to be used in different tests
s390x: topology: Check the Perform Topology Function
s390x: topology: Checking Configuration Topology Information
lib/s390x/sclp.c | 6 +
lib/s390x/sclp.h | 4 +-
lib/s390x/stsi.h | 76 ++++++++++
lib/s390x/vm.c | 39 +++++
lib/s390x/vm.h | 1 +
s390x/Makefile | 1 +
s390x/stsi.c | 23 +--
s390x/topology.c | 346 ++++++++++++++++++++++++++++++++++++++++++++
s390x/unittests.cfg | 4 +
9 files changed, 478 insertions(+), 22 deletions(-)
create mode 100644 lib/s390x/stsi.h
create mode 100644 s390x/topology.c
--
2.27.0
Changelog:
>From V2:
- Check if the test in running in KVM
(Janosch)
- patch on "Simplify stsi_get_fc and move it to library"
pushed separatly
- replace named level with abstracted topology levels
to get rid of a possible naming controversy
(Pierre)
- Better checks and new checks for STSI(15,1,x)
(Pierre)
>From V1:
- Simplify the stsi_get_fc function when pushing it into lib
(Janosch)
- Simplify PTF inline assembly as PTF instruction does not use RRE
second argument
(Claudio)
- Rename Test global name
(Claudio, Janosch)
- readibility, naming for PTF_REQ_* and removed unused globals
(Janosch)
- skipping tests which could fail when run on LPAR
(Janosh)
- Missing prefix_pop
(Janosch)
