From: Peter Maydell <peter.maydell@linaro.org>
To: QEMU Developers <qemu-devel@nongnu.org>
Cc: Richard Henderson <richard.henderson@linaro.org>,
Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>,
Artyom Tarasenko <atar4qemu@gmail.com>
Subject: Re: [PATCH for-6.2 0/2] target/sparc: Drop use of gen_io_end()
Date: Sat, 24 Jul 2021 21:27:01 +0100 [thread overview]
Message-ID: <CAFEAcA-r_WUVx+5dFrpRPGppzMon_pDBzytTp5QwVcnbVxCzSw@mail.gmail.com> (raw)
In-Reply-To: <20210724134902.7785-1-peter.maydell@linaro.org>
On Sat, 24 Jul 2021 at 14:49, Peter Maydell <peter.maydell@linaro.org> wrote:
> There is a slight difficulty here with testing this: icount
> doesn't seem to work for sparc Linux guests in master at the
> moment. For instance if you get the advent calendar image from
> https://www.qemu-advent-calendar.org/2018/download/day11.tar.xz
> it will boot without icount with a command line like
> qemu-system-sparc -display none -vga none -machine SS-20 -serial stdio -kernel /tmp/day11/zImage.elf
> But if you add '-icount auto' it will get as far as
> "bootconsole [earlyprom0] disabled" and then apparently hang.
> I'm not sure what's going on here :-(
> (I filed this as https://gitlab.com/qemu-project/qemu/-/issues/499)
This turns out to be a recent regression, caused by commit 78ff82bb
("accel/tcg: Reduce CF_COUNT_MASK to match TCG_MAX_INSNS"). It's
an intermittent rather than a 100% reproducible hang.
-- PMM
next prev parent reply other threads:[~2021-07-24 20:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-24 13:49 [PATCH for-6.2 0/2] target/sparc: Drop use of gen_io_end() Peter Maydell
2021-07-24 13:49 ` [PATCH for-6.2 1/2] " Peter Maydell
2021-07-25 9:00 ` Mark Cave-Ayland
2021-07-24 13:49 ` [PATCH for-6.2 2/2] tcg: Drop gen_io_end() Peter Maydell
2021-07-24 19:07 ` [PATCH for-6.2 0/2] target/sparc: Drop use of gen_io_end() Richard Henderson
2021-07-24 20:27 ` Peter Maydell [this message]
2021-07-24 20:47 ` Richard Henderson
2021-07-25 15:00 ` Peter Maydell
2021-09-01 7:58 ` Peter Maydell
2021-09-01 8:12 ` Mark Cave-Ayland
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