On Thu, Sep 14, 2023 at 5:52 PM Andrew Jones <ajones@xxxxxxxxxxxxxxxx> wrote: > > On Thu, Sep 14, 2023 at 09:37:03AM +0800, Haibo Xu wrote: > > Add a KVM selftests to validate the Sstc timer functionality. > > The test was ported from arm64 arch timer test. > > I just tried this test out. Running it over and over again on QEMU I see > it works sometimes, but it frequently fails with the > GUEST_ASSERT_EQ(config_iter + 1, irq_iter) assert and at least once I > also saw the __GUEST_ASSERT(xcnt >= cmp) assert. > Good catch! I can also reproduce this issue and it is a common problem for both arm64 and riscv because it also happens in a arm64 Qemu VM. It seems like a synchronization issue between host and guest shared variables. Will double check the test code. > Thanks, > drew
