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Re: [PATCH] docs/user: Remove outdated 'Quick Start' section


From: Peter Maydell
Subject: Re: [PATCH] docs/user: Remove outdated 'Quick Start' section
Date: Thu, 11 Feb 2021 17:02:05 +0000

Laurent: Ping^2 ? Somebody on IRC just now was getting confused by this
ancient documentation and its references to nonexistent tarballs...

-- PMM

On Tue, 19 Jan 2021 at 13:58, Peter Maydell <peter.maydell@linaro.org> wrote:
>
> Ping? Laurent, what's your take on this docs patch?
>
> thanks
> -- PMM
>
> On Sun, 22 Nov 2020 at 00:01, Peter Maydell <peter.maydell@linaro.org> wrote:
> >
> > The 'Quick Start' section of the userspace emulator documentation is
> > very old and outdated. In particular:
> >  - it suggests running x86-on-x86 emulation, which is the least
> >    interesting possible use case
> >  - it recommends that users download tarballs of guest binaries
> >    from the QEMU web page which we no longer provide there
> >
> > There's nothing salvageable here; delete it all.
> >
> > Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> > ---
> > I'm open to suggestions that this is being too drastic;
> > the main aim here is to remove references to tar.gz files
> > that we haven't provided for years, as noted by
> >  https://bugs.launchpad.net/qemu/+bug/1884982
> > Ideally the whole of docs/user could use a lot of love...
> >
> >  docs/user/main.rst | 61 ----------------------------------------------
> >  1 file changed, 61 deletions(-)
> >
> > diff --git a/docs/user/main.rst b/docs/user/main.rst
> > index bd99b0fdbe9..49ccae3ecab 100644
> > --- a/docs/user/main.rst
> > +++ b/docs/user/main.rst
> > @@ -45,67 +45,6 @@ emulator.
> >  Linux User space emulator
> >  -------------------------
> >
> > -Quick Start
> > -~~~~~~~~~~~
> > -
> > -In order to launch a Linux process, QEMU needs the process executable
> > -itself and all the target (x86) dynamic libraries used by it.
> > -
> > --  On x86, you can just try to launch any process by using the native
> > -   libraries::
> > -
> > -      qemu-i386 -L / /bin/ls
> > -
> > -   ``-L /`` tells that the x86 dynamic linker must be searched with a
> > -   ``/`` prefix.
> > -
> > --  Since QEMU is also a linux process, you can launch QEMU with QEMU
> > -   (NOTE: you can only do that if you compiled QEMU from the sources)::
> > -
> > -      qemu-i386 -L / qemu-i386 -L / /bin/ls
> > -
> > --  On non x86 CPUs, you need first to download at least an x86 glibc
> > -   (``qemu-runtime-i386-XXX-.tar.gz`` on the QEMU web page). Ensure that
> > -   ``LD_LIBRARY_PATH`` is not set::
> > -
> > -      unset LD_LIBRARY_PATH
> > -
> > -   Then you can launch the precompiled ``ls`` x86 executable::
> > -
> > -      qemu-i386 tests/i386/ls
> > -
> > -   You can look at ``scripts/qemu-binfmt-conf.sh`` so that QEMU is
> > -   automatically launched by the Linux kernel when you try to launch x86
> > -   executables. It requires the ``binfmt_misc`` module in the Linux
> > -   kernel.
> > -
> > --  The x86 version of QEMU is also included. You can try weird things
> > -   such as::
> > -
> > -      qemu-i386 /usr/local/qemu-i386/bin/qemu-i386 \
> > -                /usr/local/qemu-i386/bin/ls-i386
> > -
> > -Wine launch
> > -~~~~~~~~~~~
> > -
> > --  Ensure that you have a working QEMU with the x86 glibc distribution
> > -   (see previous section). In order to verify it, you must be able to
> > -   do::
> > -
> > -      qemu-i386 /usr/local/qemu-i386/bin/ls-i386
> > -
> > --  Download the binary x86 Wine install (``qemu-XXX-i386-wine.tar.gz``
> > -   on the QEMU web page).
> > -
> > --  Configure Wine on your account. Look at the provided script
> > -   ``/usr/local/qemu-i386/bin/wine-conf.sh``. Your previous
> > -   ``${HOME}/.wine`` directory is saved to ``${HOME}/.wine.org``.
> > -
> > --  Then you can try the example ``putty.exe``::
> > -
> > -      qemu-i386 /usr/local/qemu-i386/wine/bin/wine \
> > -                /usr/local/qemu-i386/wine/c/Program\ Files/putty.exe
> > -
> >  Command line options
> >  ~~~~~~~~~~~~~~~~~~~~
> >
> > --
> > 2.20.1



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