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Re: [Qemu-devel] [PATCH v5 23/24] replay: add BH oneshot event for block

From: Alex Bennée
Subject: Re: [Qemu-devel] [PATCH v5 23/24] replay: add BH oneshot event for block layer
Date: Thu, 26 Jul 2018 18:20:45 +0100
User-agent: mu4e 1.1.0; emacs 26.1.50

Alex Bennée <address@hidden> writes:

> Pavel Dovgalyuk <address@hidden> writes:
>> Replay is capable of recording normal BH events, but sometimes
>> there are single use callbacks scheduled with aio_bh_schedule_oneshot
>> function. This patch enables recording and replaying such callbacks.
>> Block layer uses these events for calling the completion function.
>> Replaying these calls makes the execution deterministic.
>> Signed-off-by: Pavel Dovgalyuk <address@hidden>
> I'm not sure what about this commit causes the compile breakage I'm
> seeing:
>   LINK    aarch64-linux-user/qemu-aarch64
> ../libqemuutil.a(cpu-get-icount.o):(.bss+0x0): multiple definition of 
> `use_icount'
> exec.o:(.bss+0x58): first defined here
> collect2: error: ld returned 1 exit status
> Makefile:199: recipe for target 'qemu-aarch64' failed
> make[1]: *** [qemu-aarch64] Error 1
> Makefile:481: recipe for target 'subdir-aarch64-linux-user' failed
> make: *** [subdir-aarch64-linux-user] Error 2
> It only occurs on a make clean && make -j on that commit though. It's
> hidden if you do incremental builds.

And it seems to be the same failure across all the cross builds:


Alex Bennée

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