KVM: selftests: Use __GLIBC__, not _GNU_SOURCE, to detect actual glibc

Browse source

Use __GLIBC__ in the hardware disable test to detect when selftests are
being built/linked against glibc and thus pthread_attr_setaffinity_np() is
(hopefully) available.  As pointed out by Sashiko and Hisam, _GNU_SOURCE is
effectively a "request" macro to enable functionality, whereas __GLIBC__ is
an announcement of support and selftests' idiomatic way of guarding code
that's specific to glibc.

Fixes: 496779b549 ("KVM: selftests: Pre-set threads affinity in hardware disable test when possible")
Reported-by: Sashiko Bot <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260731201140.5AF0C1F00AC4@smtp.kernel.org
Suggested-by: Hisam Mehboob <hisamshar@gmail.com>
Link: https://patch.msgid.link/20260826161430.714316-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

...

This commit is contained in:

Sean Christopherson 2026-08-26 09:14:30 -07:00

parent 79a71cc256

commit f13368e0ac

1 changed files with 3 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

tools/testing/selftests/kvm/hardware_disable_test.c

View file