[v2] tcg: Issue memory barriers for guest memory model

[PATCH v2 0/5] tcg: Issue memory barriers for guest memory model

Richard Henderson posted 5 patches 1 year, 1 month ago

Diff against v1 v3
Download series mbox

Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20230306015710.1868853-1-richard.henderson@linaro.org

Maintainers: Richard Henderson <richard.henderson@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, Riku Voipio <riku.voipio@iki.fi>

There is a newer version of this series

include/tcg/tcg.h     | 34 ++++++++++++++++++++++++++++++++++
accel/tcg/cputlb.c    |  2 ++
accel/tcg/tcg-all.c   | 38 ++++++++------------------------------
accel/tcg/user-exec.c | 14 ++++++++++++++
tcg/tcg-op.c          | 19 +++++++++++--------
5 files changed, 69 insertions(+), 38 deletions(-)

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[PATCH v2 0/5] tcg: Issue memory barriers for guest memory model

Posted by Richard Henderson 1 year, 1 month ago

Version 1 was very nearly 2 years ago:
https://lore.kernel.org/qemu-devel/20210316220735.2048137-1-richard.henderson@linaro.org/

I didn't persue it at the time because at the time it didn't actually
fix the s390x-on-aarch64 problems.  I'm re-posting this now because
of Paolo's "missing barriers on ARM" patch set.

It was never very easy to trigger the s390x problem, but with the two
patch sets I've been unable to do so all day.



r~


Richard Henderson (5):
  tcg: Do not elide memory barriers for !CF_PARALLEL
  tcg: Elide memory barriers implied by the host memory model
  tcg: Create tcg_req_mo
  tcg: Add host memory barriers to cpu_ldst.h interfaces
  accel/tcg: Remove check_tcg_memory_orders_compatible

 include/tcg/tcg.h     | 34 ++++++++++++++++++++++++++++++++++
 accel/tcg/cputlb.c    |  2 ++
 accel/tcg/tcg-all.c   | 38 ++++++++------------------------------
 accel/tcg/user-exec.c | 14 ++++++++++++++
 tcg/tcg-op.c          | 19 +++++++++++--------
 5 files changed, 69 insertions(+), 38 deletions(-)

-- 
2.34.1