Only Cascadelake-AP CPUs appear to report "die_id" values != 0 on Linux
right now - AMD EPYC's don't report "die_id" (at least with Fedora 31
kernel). Lacking access to Cascadelake-AP CPUs, this test data was from
a Fedora 31 QEMU guest launched with
-cpu qemu64 -smp sockets=2,dies=3,cores=2,threads=1
Ideally we'd replace this data with some from a real machine reporting
"die_id", to ensure we're not mislead by QEMU's impl.
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This proves libvirt can now handle high socket_id and
core_id values correctly and ensures we won't introduce
regressions in this area.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
The latter are no longer used by libvirt, and the former
never were; moreover, both have a corresponding *_list
file which we can manipulate very conveniently using our
bitmap APIs, so dropping them makes sure in the future
developers will look into that rather than trying to
parse the kernel binary bitmaps.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Some of the data dumps didn't include them; luckily,
we're not actually missing any information since we
can recreate them by looking at the corresponding
thread_sibilings files.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Let's add a testcase for a S390 system running kernel version 4.14 on
LPAR.
Reviewed-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Some ARM platforms, such as the original Raspberry Pi, report the
CPU frequency in the BogoMIPS field of /proc/cpuinfo, so libvirt
parsed that field and returned it through its API.
However, not only many more boards don't report any value there,
but several - including ARMv8-based server hardware, and even the
more recent Raspberry Pi 3 - use this field as originally intended:
to report the BogoMIPS value instead of the CPU frequency.
Since we have no way of detecting how the field is being used,
it's better to report no information at all rather than something
ludicrous like "your shiny 96-core aarch64 virtualization host's
CPUs are running at a whopping 100 MHz".
Partially-resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1206353
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Make the parser both more strict, by not ignoring errors reported
by virStrToLong_ui(), and more permissive, by not failing due to
unrelated fields which just happen to have a know prefix and
accepting any amount of whitespace before the numeric value.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Bit more test data, this time with complete info copied, mainly with
cache information, so we can easily add tests for it.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
The functionality these tests partially relied on (scanning the cpu
directory for cpu[0-9]+ subdirectories) is going to be removed, so we
need additional files that are present on all non-medieval systems.
Removing all these tests would be an option but we would lose the
ability to test the topologies. Even though we just extract number of
sockets/cores/threads from all these directory trees.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Move all APIs with a virHostCPU name prefix out into new
util/virhostcpu.h & util/virhostcpu.c files
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
