Hi Alexandru, On 9/1/20 11:24 AM, Alexandru Elisei wrote: > Hi Eric, > > These patches are extremely welcome! I took over the KVM SPE patches from Andrew > Murray, and I was working on something similar to help with development. Cool. > > The KVM series on the public mailing list work only by chance because it is > impossible to reliably map the SPE buffer at EL2 when profiling triggers a stage 2 > data abort. That's because the DABT is reported asynchronously via the buffer > management interrupt and the faulting IPA is not reported anywhere. I'm trying to > fix this issue in the next iteration of the series, and then I'll come back to > your patches for review and testing. Sure. Looking forward to reviewing your respin. Thanks Eric > > Thanks, > > Alex > > On 8/31/20 8:34 PM, Eric Auger wrote: >> This series implements tests exercising the Statistical Profiling >> Extensions. >> >> This was tested with associated unmerged kernel [1] and QEMU [2] >> series. >> >> Depending on the comments, I can easily add other tests checking >> more configs, additional events and testing migration too. I hope >> this can be useful when respinning both series. >> >> All SPE tests can be launched with: >> ./run_tests.sh -g spe >> Tests also can be launched individually. For example: >> ./arm-run arm/spe.flat -append 'spe-buffer' >> >> The series can be found at: >> https://github.com/eauger/kut/tree/spe_rfc >> >> References: >> [1] [PATCH v2 00/18] arm64: KVM: add SPE profiling support >> [2] [PATCH 0/7] target/arm: Add vSPE support to KVM guest >> >> Eric Auger (4): >> arm64: Move get_id_aa64dfr0() in processor.h >> spe: Probing and Introspection Test >> spe: Add profiling buffer test >> spe: Test Profiling Buffer Events >> >> arm/Makefile.common | 1 + >> arm/pmu.c | 1 - >> arm/spe.c | 463 ++++++++++++++++++++++++++++++++++++++ >> arm/unittests.cfg | 24 ++ >> lib/arm64/asm/barrier.h | 1 + >> lib/arm64/asm/processor.h | 5 + >> 6 files changed, 494 insertions(+), 1 deletion(-) >> create mode 100644 arm/spe.c >> > _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
