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Regression caught by replay_kernel.py:ReplayKernelNormal.test_aarch64_vi

From: Cleber Rosa
Subject: Regression caught by replay_kernel.py:ReplayKernelNormal.test_aarch64_virt
Date: Mon, 26 Jul 2021 20:39:33 -0400
User-agent: mu4e 1.4.15; emacs 27.2

Hi everyone,

is currently failing consistently (first found that in [1]).

I've bisected it down to the following commit:


78ff82bb1b67c0d79113688e4b3427fc99cab9d4 is the first bad commit
commit 78ff82bb1b67c0d79113688e4b3427fc99cab9d4
Author: Richard Henderson <richard.henderson@linaro.org>

    accel/tcg: Reduce CF_COUNT_MASK to match TCG_MAX_INSNS
    The space reserved for CF_COUNT_MASK was overly large.
    Reduce to free up cflags bits and eliminate an extra test.
    Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
    Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
    Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
    Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
    Message-Id: <20210717221851.2124573-2-richard.henderson@linaro.org>

 accel/tcg/translate-all.c | 5 ++---
 include/exec/exec-all.h   | 4 +++-
 2 files changed, 5 insertions(+), 4 deletions(-)


To reproduce it:

1. configure --target-list=aarch64-softmmu
2. meson compile
3. make check-venv
4. ./tests/venv/bin/avocado --show=test run 

PS: I haven't had the time yet to scan the mailing list for possible
discussions about it.

[1] https://gitlab.com/qemu-project/qemu/-/jobs/1445513133#L268

Cleber Rosa
[ Sr Software Engineer - Virtualization Team - Red Hat ]
[ Avocado Test Framework - avocado-framework.github.io ]
[  7ABB 96EB 8B46 B94D 5E0F  E9BB 657E 8D33 A5F2 09F3  ]

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