[PATCH v2] .gitlab-ci.d/crossbuilds.yml: Force 'make check' single-threaded for cross-i686-tci

[Peter Maydell]

The cross-i686-tci CI job is persistently flaky with various tests
hitting timeouts.  One theory for why this is happening is that we're
running too many tests in parallel and so sometimes a test gets
starved of CPU and isn't able to complete within the timeout.

(The environment this CI job runs in seems to cause us to default
to a parallelism of 9 in the main CI.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
If this works we might be able to wind this up to -j2 or -j3,
and/or consider whether other CI jobs need something similar.
---
 .gitlab-ci.d/crossbuilds.yml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/.gitlab-ci.d/crossbuilds.yml b/.gitlab-ci.d/crossbuilds.yml
index 459273f9da5..1e21d082aa4 100644
--- a/.gitlab-ci.d/crossbuilds.yml
+++ b/.gitlab-ci.d/crossbuilds.yml
@@ -62,7 +62,11 @@ cross-i686-tci:
     IMAGE: debian-i686-cross
     ACCEL: tcg-interpreter
     EXTRA_CONFIGURE_OPTS: 
--target-list=i386-softmmu,i386-linux-user,aarch64-softmmu,aarch64-linux-user,ppc-softmmu,ppc-linux-user
 --disable-plugins --disable-kvm
-    MAKE_CHECK_ARGS: check check-tcg
+    # Force tests to run in series, to see whether this
+    # reduces the flakiness of this CI job. The CI
+    # environment by default shows us 8 CPUs and so we
+    # would otherwise be using a parallelism of 9.
+    MAKE_CHECK_ARGS: check check-tcg -j1
 
 cross-mipsel-system:
   extends: .cross_system_build_job
-- 
2.34.1