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Re: [PULL v2 00/37] Linux user for 5.0 patches

From: Richard Henderson
Subject: Re: [PULL v2 00/37] Linux user for 5.0 patches
Date: Wed, 18 Mar 2020 12:46:08 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1

On 3/18/20 6:57 AM, Peter Maydell wrote:
> My set of "run ls for various architectures" linux-user tests
> https://people.linaro.org/~peter.maydell/linux-user-test-pmm-20200114.tgz
> fails with this pullreq:
> e104462:bionic:linux-user-test-0.3$
> /home/petmay01/linaro/qemu-for-merges/build/all-linux-static/x86_64-linux-user/qemu-x86_64
> -L ./gnemul/qemu-x86_64 x86_64/ls -l dummyfile
> qemu: 0x40008117e9: unhandled CPU exception 0x101 - aborting

I replicated this on aarch64 host, with an existing build tree and merging in
the pull request.  It does not occur when building the same merged tree from

I have no idea what the reason for this is.  Laurent suggested a file in the
build tree that is shadowed by one in the source tree, but to me that makes no
sense for this case:

It's target/i386/cpu.h that defines EXCP_SYSCALL (renumbered in this series
from 0x100 to 0x101), which is not in the build tree.  It is
linux-user/i386/cpu_loop.c that consumes EXCP_SYSCALL, and it is also not in
the build tree.

However, from the error message above, it's clear that cpu_loop.o has not been
rebuilt properly.


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