On Wed, Mar 27, 2024, Shan Kang wrote:
On Wed, 2024-02-07 at 09:26 -0800, Xin Li wrote:
This patch set enables the Intel flexible return and event delivery (FRED) architecture with KVM VMX to allow guests to utilize FRED.
We tested this FRED KVM patch set on a 7th Intel(R) Core(TM) CPU and the Intel Simics® Simulator with the following four configurations:
That likely provides coverage for the happy cases, but I doubt it provides negative testing, e.g. for VM-Enter consistency checks. KVM-Unit-Tests are currently the best choice for concistency checks (unfortunately).
And given the insanity of event re-injection, KVM selftests needs a dedicated test for that, and another for the interactions with nVMX, e.g. a la svm_nested_soft_inject_test.c.
I haven't looked too closely at the selftest that's already provided, but my suspicion is that we'll want multiple tests, or alternatively one test that uses KVM_ONE_VCPU_TEST_SUITE().
What about posting the FRED selftests in another new patch set?
Thanks! Xin