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

[Alex Bennée]

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

 arm/barrier-litmus-test.c    | 258 ++++++++++++++++++++++++++++++++++++
 arm/ipi-test.c               |  58 +++++++++
 arm/locking-test.c           | 302 +++++++++++++++++++++++++++++++++++++++++++
 arm/run                      |  11 +-
 arm/tcg-test-asm.S           | 170 ++++++++++++++++++++++++
 arm/tcg-test.c               | 248 +++++++++++++++++++++++++++++++++++
 arm/tlbflush-test.c          | 194 +++++++++++++++++++++++++++
 arm/unittests.cfg            | 170 ++++++++++++++++++++++++
 config/config-arm-common.mak |  16 ++-
 lib/arm/asm/barrier.h        |  63 ++++++++-
 lib/arm/asm/gic.h            | 122 +++++++++++++++++
 lib/arm/asm/processor.h      |  10 ++
 lib/arm/io.c                 |  31 +++++
 lib/arm64/asm/barrier.h      |  50 +++++++
 lib/arm64/asm/gic.h          |   1 +
 lib/arm64/asm/processor.h    |  10 ++
 lib/prng.c                   | 162 +++++++++++++++++++++++
 lib/prng.h                   |  82 ++++++++++++
 18 files changed, 1953 insertions(+), 5 deletions(-)
 create mode 100644 arm/barrier-litmus-test.c
 create mode 100644 arm/ipi-test.c
 create mode 100644 arm/locking-test.c
 create mode 100644 arm/tcg-test-asm.S
 create mode 100644 arm/tcg-test.c
 create mode 100644 arm/tlbflush-test.c
 create mode 100644 lib/arm/asm/gic.h
 create mode 100644 lib/arm64/asm/gic.h
 create mode 100644 lib/prng.c
 create mode 100644 lib/prng.h

-- 
2.7.1