vfio: selftests: Allow builds when ARCH=x86

Allow builds when ARCH=x86 since the top-level Makefile can set ARCH=x86
even for 64-bit x86 builds.

Note that ARCH=x86 could also indicate a native build on a 32-bit x86
host. However, it doesn't seem like anyone is building selftests
natively on 32-bit x86 hosts these days since KVM selftests allow
ARCH=x86 and fail to compile on 32-bit x86.

If someone reports an issue on 32-bit native builds we can harden the
KVM and VFIO selftests to explicitly check 64-bit (see the discussion in
the Closes link below).

Fixes: a55d4bbbe644 ("vfio: selftests: only build tests on arm64 and x86_64")
Reported-by: Jason Gunthorpe <jgg@nvidia.com>
Closes: https://lore.kernel.org/kvm/20260427231217.GA1670652@nvidia.com/
Signed-off-by: David Matlack <dmatlack@google.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20260428232707.2139059-1-dmatlack@google.com
Signed-off-by: Alex Williamson <alex@shazbot.org>

diff --git a/tools/testing/selftests/vfio/Makefile b/tools/testing/selftests/vfio/Makefile
index a19b75742342adf2fca962c779e6331e3cda154e..0a4cfd1a6c7ed6caa6d3cb982b8790b2aa938360 100644 (file)
--- a/tools/testing/selftests/vfio/Makefile
+++ b/tools/testing/selftests/vfio/Makefile
@@ -1,6 +1,6 @@
 ARCH ?= $(shell uname -m)
 
-ifeq (,$(filter $(ARCH),aarch64 arm64 x86_64))
+ifeq (,$(filter $(ARCH),aarch64 arm64 x86 x86_64))
 # Do nothing on unsupported architectures
 include ../lib.mk
 else