Hi Mike, On 31/07/18 19:28, Mike Galbraith wrote: > On Mon, 2018-07-30 at 18:24 +0200, Mike Galbraith wrote: >> On Sun, 2018-07-29 at 13:47 +0200, Mike Galbraith wrote: >>> FYI, per kvm unit tests, 4.16-rt definitely has more kvm issues. > > But it's not RT, or rather most of it isn't... > >>> huawei5:/abuild/mike/kvm-unit-tests # uname -r >>> 4.16.18-rt11-rt >>> huawei5:/abuild/mike/kvm-unit-tests # ./run_tests.sh >>> PASS selftest-setup (2 tests) >>> FAIL selftest-vectors-kernel >>> FAIL selftest-vectors-user >>> PASS selftest-smp (65 tests) >>> PASS pci-test (1 tests) >>> PASS pmu (3 tests) >>> FAIL gicv2-ipi >>> FAIL gicv3-ipi >>> FAIL gicv2-active >>> FAIL gicv3-active >>> PASS psci (4 tests) >>> FAIL timer >>> huawei5:/abuild/mike/kvm-unit-tests # >>> >>> 4.14-rt passes all tests. The above is with the kvm raw_spinlock_t >>> conversion patch applied, but the 4.12 based SLERT tree I cloned to >>> explore arm-land in the first place shows only one timer failure, and >>> has/needs it applied as well, which would seem to vindicate it. >>> >>> huawei5:/abuild/mike/kvm-unit-tests # uname -r >>> 4.12.14-0.gec0b559-rt >>> huawei5:/abuild/mike/kvm-unit-tests # ./run_tests.sh >>> PASS selftest-setup (2 tests) >>> PASS selftest-vectors-kernel (2 tests) >>> PASS selftest-vectors-user (2 tests) >>> PASS selftest-smp (65 tests) >>> PASS pci-test (1 tests) >>> PASS pmu (3 tests) >>> PASS gicv2-ipi (3 tests) >>> PASS gicv3-ipi (3 tests) >>> PASS gicv2-active (1 tests) >>> PASS gicv3-active (1 tests) >>> PASS psci (4 tests) >>> FAIL timer (8 tests, 1 unexpected failures) >> >> FWIW, this single timer failure wass inspired by something in the 4-15 >> merge window. > > As noted, the single timer failure is an RT issue of some sort, and > remains. The rest I bisected in @stable with the attached config, and > confirmed that revert fixes up 4.16-rt as well (modulo singleton). Could you give that patchlet[1] a go? It solves a similar issue for me on a different platform. Thanks, M. [1] https://lists.cs.columbia.edu/pipermail/kvmarm/2018-August/032469.html -- Jazz is not dead. It just smells funny...
