Re: [PATCH] docs/tcg-plugins: document QEMU_PLUGIN behaviour

["Alex Bennée" <alex.bennee@linaro.org>]

Christoph Muellner <cmuellner@linux.com> writes:

> QEMU plugins can be loaded via command line arguments or via
> the QEMU_PLUGIN environment variable. Currently, only the first method
> is documented. Let's document QEMU_PLUGIN.
>
> Signed-off-by: Christoph Muellner <cmuellner@linux.com>
> ---
>  docs/devel/tcg-plugins.rst | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/docs/devel/tcg-plugins.rst b/docs/devel/tcg-plugins.rst
> index f93ef4fe52..ba48be18d0 100644
> --- a/docs/devel/tcg-plugins.rst
> +++ b/docs/devel/tcg-plugins.rst
> @@ -34,6 +34,10 @@ Arguments are plugin specific and can be used to modify their
>  behaviour. In this case the howvec plugin is being asked to use inline
>  ops to count and break down the hint instructions by type.
>  
> +QEMU also evaluates the environment variable ``QEMU_PLUGIN``::

You should also make it clear this only works for *-user builds of QEMU.
For system emulation you still need to use the CLI interface. 

> +
> +  QEMU_PLUGIN="file=tests/plugin/libhowec.so,inline=on,count=hint" $QEMU
> +
>  Writing plugins
>  ---------------


-- 
Alex Bennée