Run msr.flat as vendor GenuineIntel so that KVM SVM will intercept SYSENTER_ESP and SYSENTER_EIP in order to preserve bits 63:32. Alternatively, this could be handled in the test, but fudging the config is easier and it also adds coverage for KVM's aforementioned emulation. Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx> --- x86/unittests.cfg | 3 +++ 1 file changed, 3 insertions(+) diff --git a/x86/unittests.cfg b/x86/unittests.cfg index 0698d15..c2608bc 100644 --- a/x86/unittests.cfg +++ b/x86/unittests.cfg @@ -167,7 +167,10 @@ extra_params = -cpu max arch = x86_64 [msr] +# Use GenuineIntel to ensure SYSENTER MSRs are fully preserved, and to test +# SVM emulation of Intel CPU behavior. file = msr.flat +extra_params = -cpu qemu64,vendor=GenuineIntel [pmu] file = pmu.flat -- 2.31.1.498.g6c1eba8ee3d-goog
