diff options
| author | Sean Christopherson <seanjc@google.com> | 2024-10-30 21:53:33 -0700 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-11-04 21:10:48 -0800 |
| commit | 979956bc681105f34642971448c4cda048954a07 (patch) | |
| tree | 4be9a5a5e4e3fdfa614feab21a4d5d9de9afa02d /tools | |
| parent | 5b188cc4866aaf712e896f92ac42c7802135e507 (diff) | |
KVM: selftests: Don't force -march=x86-64-v2 if it's unsupported
Force -march=x86-64-v2 to avoid SSE/AVX instructions if and only if the
uarch definition is supported by the compiler, e.g. gcc 7.5 only supports
x86-64.
Fixes: 9a400068a158 ("KVM: selftests: x86: Avoid using SSE/AVX instructions")
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-and-tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20241031045333.1209195-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/kvm/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 1896ef383cae..48645a2e29da 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -249,8 +249,10 @@ ifeq ($(ARCH),s390) CFLAGS += -march=z10 endif ifeq ($(ARCH),x86) +ifeq ($(shell echo "void foo(void) { }" | $(CC) -march=x86-64-v2 -x c - -c -o /dev/null 2>/dev/null; echo "$$?"),0) CFLAGS += -march=x86-64-v2 endif +endif ifeq ($(ARCH),arm64) tools_dir := $(top_srcdir)/tools arm64_tools_dir := $(tools_dir)/arch/arm64/tools/ |