On 19/06/2020 17.48, Peter Maydell wrote:
> Deprecate our TileGX target support:
> * we have no active maintainer for it
> * it has had essentially no contributions (other than tree-wide cleanups
> and similar) since it was first added
> * the Linux kernel dropped support in 2018, as has glibc
>
> Note the deprecation in the manual, but don't try to print a warning
> when QEMU runs -- printing unsuppressable messages is more obtrusive
> for linux-user mode than it would be for system-emulation mode, and
> it doesn't seem worth trying to invent a new suppressible-error
> system for linux-user just for this.
I wonder whether anybody will notice the deprecation note in the manual
only, though. If we want to find out whether there are still any users
left, I think printing an unsuppressable message would be better... or
maybe something like:
if (!getenv("QEMU_SUPPRESS_TILEGX_DEPRECATION_WARNING")) {
fprintf(stderr, "Warning: TileGX CPU support is deprecated and "
"will be removed soon!\n"
"Set QEMU_SUPPRESS_TILEGX_DEPRECATION_WARNING "
"environment variable to hide this warning.");
}
?
> diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst
> index 3a255591c34..e9097e089bb 100644
> --- a/docs/system/deprecated.rst
> +++ b/docs/system/deprecated.rst
> @@ -387,6 +387,17 @@ The above, converted to the current supported format::
>
> json:{"file.driver":"rbd", "file.pool":"rbd", "file.image":"name"}
>
> +linux-user mode CPUs
> +--------------------
> +
> +``tilegx`` CPUs (since 5.1.0)
> +'''''''''''''''''''''''''''''
> +
> +The ``tilegx`` guest CPU support (which was only implemented in
> +linux-user mode) is deprecated and will be removed in a future version
> +of QEMU. Support for this CPU was removed from the upstream Linux
> +kernel in 2018, and has also been dropped from glibc.
Reviewed-by: Thomas Huth <[email protected]>
