Re: [Qemu-devel] [RFC 00/11] Current MTTCG kvm-unit-test patches

[Andrew Jones <drjones@redhat.com>]

On Wed, Apr 27, 2016 at 04:09:00PM +0100, Alex Bennée wrote:
> 
> Andrew Jones <drjones@redhat.com> writes:
> 
> > On Fri, Feb 26, 2016 at 01:15:22PM +0000, Alex Bennée wrote:
> >> Hi,
> >>
> >> Some of these patches have been posted before and previous patches
> >> have already been accepted upstream so I'm tagging this as a new RFC
> >> series.
> >>
> >> This is a series of tests built around kvm-unit-tests but built with
> >> the express purpose of stressing the TCG, in particular MTTCG builds.
> >>
> >> Changes from previous appearances:
> >>
> >>  * Separated locking and barrier tests
> >>  * Included Drew's IPI patches (used in tcg-test)
> >>  * New TCG chaining test
> >>
> >> The new barrier tests really only fails when running on MTTCG builds on
> >> a weak backend. Many thanks to Will Deacon for helping me get a
> >> working test case at the last Connect.
> >>
> >> I'm mainly posting these for reference for others testing MTTCG as
> >> I've still got to check I've addressed any outstanding review
> >> comments. However there has been enough code churn some of the
> >> comments may no longer be relevant.
> >>
> >> The TCG tests are also useful as benchmarks for comparing the cost of
> >> having chained basic blocks versus exiting the loop every time. The
> >> pathological case is the computed jumps test as all the addresses are
> >> within a PAGE_SIZE boundary the tb_jump_cache has no effect meaning a
> >> full look up each time.
> >>
> >> Alex Bennée (8):
> >>   config/config-arm-common: build-up tests-common target
> >>   lib: add isaac prng library from CCAN
> >>   arm/run: set indentation defaults for emacs
> >>   arm/run: allow aarch64 to start arm binaries
> >>   arm/tlbflush-test: Add TLB torture test
> >>   arm/locking-tests: add comprehensive locking test
> >>   arm/barrier-litmus-tests: add some litmus tests
> >>   arm/tcg-test: some basic TCG exercising tests
> >>
> >> Andrew Jones (3):
> >>   arm/arm64: irq enable/disable
> >>   arm/arm64: Add initial gic support
> >>   arm/arm64: Add IPI test
> >
> > I've actually updated these patches a bit, and started extending the
> > series to also work with a v3 gic. I'll pick that back up and get it
> > posted for you (hopefully next week). Or I'll at least update my
> > arm/ipi-test branch with the changes I've made for gicv2...
> 
> I'm getting ready to post the current iteration and I realised I hadn't
> seen your updates. Have they gone public anywhere?

Sorry. I didn't finish polishing the gicv3 stuff so didn't end up
sending anything. I'll send something tomorrow (same story as last time,
if not gicv3 stuff, at least updated gicv2 :-)

Thanks,
drew