* s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
@ 2019-10-17 10:02 David Hildenbrand
2019-10-17 10:25 ` Philippe Mathieu-Daudé
2019-10-17 11:01 ` Thomas Huth
0 siblings, 2 replies; 8+ messages in thread
From: David Hildenbrand @ 2019-10-17 10:02 UTC (permalink / raw)
To: qemu-devel, qemu-s390x, Richard Henderson
Hi,
I'm currently trying to run Fedora 31 under qemu-user
(https://github.com/fedora-cloud/docker-brew-fedora/tree/8a81f67271e959dfc8f8a888b161bbd540b7a83b/s390x)
in order to debug a vector instruction issue.
Strangely, when trying to chroot into above rootfs and running
/bin/bash, I get
t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/bash
TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
/home/dhildenb/git/qemu/tcg/tci.c:859: tcg fatal error
Aborted
But it's not fundamentally broken:
t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/ls
bin dev home lib64 media opt qemu-s390x run srv tmp var
boot etc lib lost+found mnt proc root sbin sys usr
I do wonder why we don't run into the same issue under qemu-systems390x.
@Richard, any idea?
--
Thanks,
David / dhildenb
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
2019-10-17 10:02 s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec() David Hildenbrand
@ 2019-10-17 10:25 ` Philippe Mathieu-Daudé
2019-10-17 10:35 ` David Hildenbrand
2019-10-17 11:01 ` Thomas Huth
1 sibling, 1 reply; 8+ messages in thread
From: Philippe Mathieu-Daudé @ 2019-10-17 10:25 UTC (permalink / raw)
To: David Hildenbrand, qemu-devel, qemu-s390x, Richard Henderson
Hi David,
On 10/17/19 12:02 PM, David Hildenbrand wrote:
> Hi,
>
> I'm currently trying to run Fedora 31 under qemu-user
> (https://github.com/fedora-cloud/docker-brew-fedora/tree/8a81f67271e959dfc8f8a888b161bbd540b7a83b/s390x)
> in order to debug a vector instruction issue.
>
> Strangely, when trying to chroot into above rootfs and running
> /bin/bash, I get
>
> t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/bash
> TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
> /home/dhildenb/git/qemu/tcg/tci.c:859: tcg fatal error
> Aborted
>
>
> But it's not fundamentally broken:
>
> t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/ls
> bin dev home lib64 media opt qemu-s390x run srv tmp var
> boot etc lib lost+found mnt proc root sbin sys usr
>
>
> I do wonder why we don't run into the same issue under qemu-systems390x.
Are you also using TCI in system emulation?
Can you simply use TCG to debug your vector instruction issue instead?
Regards,
Phil.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
2019-10-17 10:25 ` Philippe Mathieu-Daudé
@ 2019-10-17 10:35 ` David Hildenbrand
2019-10-17 10:42 ` Philippe Mathieu-Daudé
0 siblings, 1 reply; 8+ messages in thread
From: David Hildenbrand @ 2019-10-17 10:35 UTC (permalink / raw)
To: Philippe Mathieu-Daudé, qemu-devel, qemu-s390x, Richard Henderson
On 17.10.19 12:25, Philippe Mathieu-Daudé wrote:
> Hi David,
>
> On 10/17/19 12:02 PM, David Hildenbrand wrote:
>> Hi,
>>
>> I'm currently trying to run Fedora 31 under qemu-user
>> (https://github.com/fedora-cloud/docker-brew-fedora/tree/8a81f67271e959dfc8f8a888b161bbd540b7a83b/s390x)
>> in order to debug a vector instruction issue.
>>
>> Strangely, when trying to chroot into above rootfs and running
>> /bin/bash, I get
>>
>> t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/bash
>> TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
>> /home/dhildenb/git/qemu/tcg/tci.c:859: tcg fatal error
>> Aborted
>>
>>
>> But it's not fundamentally broken:
>>
>> t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/ls
>> bin dev home lib64 media opt qemu-s390x run srv tmp var
>> boot etc lib lost+found mnt proc root sbin sys usr
>>
>>
>> I do wonder why we don't run into the same issue under qemu-systems390x.
>
> Are you also using TCI in system emulation?
Most probably not. It took me longer than expected to find a ./configure
variant that at least allows me to build static qemu-user binaries. Most
probably something sneeked in there.
>
> Can you simply use TCG to debug your vector instruction issue instead?
I was using
./configure --disable-strip --disable-werror --python=/usr/bin/python3
--enable-tcg-interpreter --disable-system --enable-linux-user --static
--disable-pie --disable-sdl --disable-gtk --disable-spice
--disable-tools --disable-guest-agent --disable-guest-agent-msi
--disable-curses --disable-curl --disable-gnutls --disable-gcrypt
--disable-nettle --disable-cap-ng --disable-brlapi --disable-mpath
--disable-capstone --disable-xen --disable-rdma
--extra-ldflags="-Wl,-z,relro -Wl,-z,now" --target-list=s390x-linux-user
inspired by the Fedora rpm SPEC.
"--enable-tcg-interpreter" is the relevant bit I blindly copied without
thinking about it (in the rpm SPEC, it is wrapped by an ifdef ...)
Thanks for the hint, will try with --disable-tcg-interpreter
>
> Regards,
>
> Phil.
>
--
Thanks,
David / dhildenb
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
2019-10-17 10:35 ` David Hildenbrand
@ 2019-10-17 10:42 ` Philippe Mathieu-Daudé
0 siblings, 0 replies; 8+ messages in thread
From: Philippe Mathieu-Daudé @ 2019-10-17 10:42 UTC (permalink / raw)
To: David Hildenbrand, qemu-devel, qemu-s390x, Richard Henderson
On 10/17/19 12:35 PM, David Hildenbrand wrote:
> On 17.10.19 12:25, Philippe Mathieu-Daudé wrote:
>> Hi David,
>>
>> On 10/17/19 12:02 PM, David Hildenbrand wrote:
>>> Hi,
>>>
>>> I'm currently trying to run Fedora 31 under qemu-user
>>> (https://github.com/fedora-cloud/docker-brew-fedora/tree/8a81f67271e959dfc8f8a888b161bbd540b7a83b/s390x)
>>>
>>> in order to debug a vector instruction issue.
>>>
>>> Strangely, when trying to chroot into above rootfs and running
>>> /bin/bash, I get
>>>
>>> t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/bash
>>> TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
>>> /home/dhildenb/git/qemu/tcg/tci.c:859: tcg fatal error
>>> Aborted
>>>
>>>
>>> But it's not fundamentally broken:
>>>
>>> t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/ls
>>> bin dev home lib64 media opt qemu-s390x run srv tmp
>>> var
>>> boot etc lib lost+found mnt proc root sbin sys usr
>>>
>>>
>>> I do wonder why we don't run into the same issue under qemu-systems390x.
>>
>> Are you also using TCI in system emulation?
>
> Most probably not. It took me longer than expected to find a ./configure
> variant that at least allows me to build static qemu-user binaries. Most
> probably something sneeked in there.
>
>>
>> Can you simply use TCG to debug your vector instruction issue instead?
>
> I was using
>
> ./configure --disable-strip --disable-werror --python=/usr/bin/python3
> --enable-tcg-interpreter --disable-system --enable-linux-user --static
> --disable-pie --disable-sdl --disable-gtk --disable-spice
> --disable-tools --disable-guest-agent --disable-guest-agent-msi
> --disable-curses --disable-curl --disable-gnutls --disable-gcrypt
> --disable-nettle --disable-cap-ng --disable-brlapi --disable-mpath
> --disable-capstone --disable-xen --disable-rdma
> --extra-ldflags="-Wl,-z,relro -Wl,-z,now" --target-list=s390x-linux-user
>
> inspired by the Fedora rpm SPEC.
>
> "--enable-tcg-interpreter" is the relevant bit I blindly copied without
> thinking about it (in the rpm SPEC, it is wrapped by an ifdef ...)
I thought there was a patch adding a big warning when ./configure is run
with this option, but I can't find it so maybe we just talked about it.
> Thanks for the hint, will try with --disable-tcg-interpreter
>
>>
>> Regards,
>>
>> Phil.
>>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
2019-10-17 10:02 s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec() David Hildenbrand
2019-10-17 10:25 ` Philippe Mathieu-Daudé
@ 2019-10-17 11:01 ` Thomas Huth
2019-10-21 16:37 ` Richard Henderson
1 sibling, 1 reply; 8+ messages in thread
From: Thomas Huth @ 2019-10-17 11:01 UTC (permalink / raw)
To: David Hildenbrand, qemu-devel, qemu-s390x, Stefan Weil; +Cc: Richard Henderson
On 17/10/2019 12.02, David Hildenbrand wrote:
> Hi,
>
> I'm currently trying to run Fedora 31 under qemu-user
> (https://github.com/fedora-cloud/docker-brew-fedora/tree/8a81f67271e959dfc8f8a888b161bbd540b7a83b/s390x)
> in order to debug a vector instruction issue.
>
> Strangely, when trying to chroot into above rootfs and running
> /bin/bash, I get
>
> t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/bash
> TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
> /home/dhildenb/git/qemu/tcg/tci.c:859: tcg fatal error
> Aborted
That's likely the issue which might be fixed by Stefan's patch here:
https://patchwork.ozlabs.org/patch/1083601/
... unfortunately, this has never been merged into master. Stefan, any
chance that you could finally get this upstream?
Thomas
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
2019-10-17 11:01 ` Thomas Huth
@ 2019-10-21 16:37 ` Richard Henderson
2019-10-21 16:40 ` Peter Maydell
0 siblings, 1 reply; 8+ messages in thread
From: Richard Henderson @ 2019-10-21 16:37 UTC (permalink / raw)
To: Thomas Huth, David Hildenbrand, qemu-devel, qemu-s390x, Stefan Weil
On 10/17/19 4:01 AM, Thomas Huth wrote:
> On 17/10/2019 12.02, David Hildenbrand wrote:
>> Hi,
>>
>> I'm currently trying to run Fedora 31 under qemu-user
>> (https://github.com/fedora-cloud/docker-brew-fedora/tree/8a81f67271e959dfc8f8a888b161bbd540b7a83b/s390x)
>> in order to debug a vector instruction issue.
>>
>> Strangely, when trying to chroot into above rootfs and running
>> /bin/bash, I get
>>
>> t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/bash
>> TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
>> /home/dhildenb/git/qemu/tcg/tci.c:859: tcg fatal error
>> Aborted
>
> That's likely the issue which might be fixed by Stefan's patch here:
>
> https://patchwork.ozlabs.org/patch/1083601/
>
> ... unfortunately, this has never been merged into master. Stefan, any
> chance that you could finally get this upstream?
Oops. Sorry about that. Queued.
r~
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
2019-10-21 16:37 ` Richard Henderson
@ 2019-10-21 16:40 ` Peter Maydell
2019-10-21 16:48 ` Richard Henderson
0 siblings, 1 reply; 8+ messages in thread
From: Peter Maydell @ 2019-10-21 16:40 UTC (permalink / raw)
To: Richard Henderson
Cc: qemu-s390x, Stefan Weil, Thomas Huth, qemu-devel, David Hildenbrand
On Mon, 21 Oct 2019 at 17:39, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> On 10/17/19 4:01 AM, Thomas Huth wrote:
> > On 17/10/2019 12.02, David Hildenbrand wrote:
> >> Hi,
> >>
> >> I'm currently trying to run Fedora 31 under qemu-user
> >> (https://github.com/fedora-cloud/docker-brew-fedora/tree/8a81f67271e959dfc8f8a888b161bbd540b7a83b/s390x)
> >> in order to debug a vector instruction issue.
> >>
> >> Strangely, when trying to chroot into above rootfs and running
> >> /bin/bash, I get
> >>
> >> t460s: ~/f31 $ sudo chroot . ./qemu-s390x /bin/bash
> >> TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
> >> /home/dhildenb/git/qemu/tcg/tci.c:859: tcg fatal error
> >> Aborted
> >
> > That's likely the issue which might be fixed by Stefan's patch here:
> >
> > https://patchwork.ozlabs.org/patch/1083601/
> >
> > ... unfortunately, this has never been merged into master. Stefan, any
> > chance that you could finally get this upstream?
>
> Oops. Sorry about that. Queued.
Er, you had review comments on it the first time round.
Doesn't it need a v2 to be posted with those fixed ?
thanks
-- PMM
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec()
2019-10-21 16:40 ` Peter Maydell
@ 2019-10-21 16:48 ` Richard Henderson
0 siblings, 0 replies; 8+ messages in thread
From: Richard Henderson @ 2019-10-21 16:48 UTC (permalink / raw)
To: Peter Maydell
Cc: qemu-s390x, Stefan Weil, Thomas Huth, qemu-devel, David Hildenbrand
On 10/21/19 9:40 AM, Peter Maydell wrote:
>>> That's likely the issue which might be fixed by Stefan's patch here:
>>>
>>> https://patchwork.ozlabs.org/patch/1083601/
>>>
>>> ... unfortunately, this has never been merged into master. Stefan, any
>>> chance that you could finally get this upstream?
>>
>> Oops. Sorry about that. Queued.
>
> Er, you had review comments on it the first time round.
> Doesn't it need a v2 to be posted with those fixed ?
The patch does follow existing practice within the file,
although that itself could be cleaned up. I think that
could just be done in a separate patch.
r~
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2019-10-21 16:49 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
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2019-10-17 10:02 s390x/qemu-user: TODO /home/dhildenb/git/qemu/tcg/tci.c:859: tcg_qemu_tb_exec() David Hildenbrand
2019-10-17 10:25 ` Philippe Mathieu-Daudé
2019-10-17 10:35 ` David Hildenbrand
2019-10-17 10:42 ` Philippe Mathieu-Daudé
2019-10-17 11:01 ` Thomas Huth
2019-10-21 16:37 ` Richard Henderson
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