[Qemu-devel] [PATCH 4/6] tests: Test CPUID level handling for old machines

[Eduardo Habkost <ehabkost@redhat.com>]

We're going to change the way level/xlevel/xlevel2 are handled
when enabling features, but we need to keep the old behavior on
existing machine types. Add test cases for that.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 tests/test-x86-cpuid-compat.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/test-x86-cpuid-compat.c b/tests/test-x86-cpuid-compat.c
index 9239a9a..c65507f 100644
--- a/tests/test-x86-cpuid-compat.c
+++ b/tests/test-x86-cpuid-compat.c
@@ -91,5 +91,11 @@ int main(int argc, char **argv)
     /* if xlevel2 is already large enough, it shouldn't change: */
     add_cpuid_test("x86/cpuid/auto-xlevel2/486/fixed", "-cpu 486,xlevel2=0xC0000002,+xstore", "xlevel2", 0xC0000002);
 
+    /* Compatibility test for older machine-types that don't auto-increase level/xlevel/xlevel2: */
+
+    add_cpuid_test("x86/cpuid/auto-level/pc-2.7", "-machine pc-i440fx-2.7 -cpu 486,+arat,+avx512vbmi,+xsaveopt", "level", 1);
+    add_cpuid_test("x86/cpuid/auto-xlevel/pc-2.7", "-machine pc-i440fx-2.7 -cpu 486,+3dnow,+sse4a,+invtsc,+npt", "xlevel", 0);
+    add_cpuid_test("x86/cpuid/auto-xlevel2/pc-2.7", "-machine pc-i440fx-2.7 -cpu 486,+xstore", "xlevel2", 0);
+
     return g_test_run();
 }
-- 
2.7.4