KVM: selftests: Ignore CPUID.0DH.1H in get_cpuid_test

Similar to CPUID.0DH.0H this entry depends on the vCPU's XCR0 register
and IA32_XSS MSR. Since this test does not control for either before
assigning the vCPU's CPUID, these entries will not necessarily match
the supported CPUID exposed by KVM.

This fixes get_cpuid_test on Cascade Lake CPUs.
Suggested-by: NJim Mattson <jmattson@google.com>
Signed-off-by: NDavid Matlack <dmatlack@google.com>
Message-Id: <20210519211345.3944063-1-dmatlack@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/x86_64/get_cpuid_test.c

@@ -19,7 +19,12 @@ struct {
 	u32 function;
 	u32 index;
 } mangled_cpuids[] = {
+	/*
+	 * These entries depend on the vCPU's XCR0 register and IA32_XSS MSR,
+	 * which are not controlled for by this test.
+	 */
 	{.function = 0xd, .index = 0},
+	{.function = 0xd, .index = 1},
 };
 
 static void test_guest_cpuids(struct kvm_cpuid2 *guest_cpuid)