Re: [PATCH-for-4.2] hw/mips: Deprecate the r4k machine

[Aleksandar Markovic <aleksandar.m.mail@gmail.com>]

On Mon, Nov 25, 2019 at 11:41 AM Philippe Mathieu-Daudé
<philmd@redhat.com> wrote:
>
> The r4k machine was introduced in 2005 (6af0bf9c7) and its last
> logical change was in 2005 (9542611a6). After we can count 164
> maintenance commits (QEMU API changes) with the exception of
> 1 fix in 2015 (memory leak, commit 3ad9fd5a).
>
> This machine was introduced as a proof of concept to run a MIPS
> CPU. 2 years later, the Malta machine was add (commit 5856de80)
> modeling a real platform.
>
> Note also this machine has no specification except 5 lines in
> the header of this file:
>
>  * emulates a simple machine with ISA-like bus.
>  * ISA IO space mapped to the 0x14000000 (PHYS) and
>  * ISA memory at the 0x10000000 (PHYS, 16Mb in size).
>  * All peripherial devices are attached to this "bus" with
>  * the standard PC ISA addresses.
>
> It is time to deprecate this obsolete machine. Users are
> recommended to use the Malta board, which hardware is well
> documented.
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---

Philippe,

I see you added "libvir-list" in "cc". Was it a mistake, or there was
some purpose?

Yours,
Aleksandar

>  qemu-deprecated.texi | 5 +++++
>  hw/mips/mips_r4k.c   | 1 +
>  MAINTAINERS          | 2 +-
>  3 files changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi
> index 4b4b7425ac..05265b43c8 100644
> --- a/qemu-deprecated.texi
> +++ b/qemu-deprecated.texi
> @@ -266,6 +266,11 @@ The 'scsi-disk' device is deprecated. Users should use 'scsi-hd' or
>
>  @section System emulator machines
>
> +@subsection mips r4k platform (since 4.2)
> +
> +This machine type is very old and unmaintained. Users should use the 'malta'
> +machine type instead.
> +
>  @subsection pc-0.12, pc-0.13, pc-0.14 and pc-0.15 (since 4.0)
>
>  These machine types are very old and likely can not be used for live migration
> diff --git a/hw/mips/mips_r4k.c b/hw/mips/mips_r4k.c
> index 70024235ae..0b79ad26cb 100644
> --- a/hw/mips/mips_r4k.c
> +++ b/hw/mips/mips_r4k.c
> @@ -294,6 +294,7 @@ void mips_r4k_init(MachineState *machine)
>
>  static void mips_machine_init(MachineClass *mc)
>  {
> +    mc->deprecation_reason = "use malta machine type instead";
>      mc->desc = "mips r4k platform";
>      mc->init = mips_r4k_init;
>      mc->block_default_type = IF_IDE;
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 5e5e3e52d6..3b3a88e264 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -972,7 +972,7 @@ F: hw/net/mipsnet.c
>  R4000
>  M: Aurelien Jarno <aurelien@aurel32.net>
>  R: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
> -S: Maintained
> +S: Obsolete
>  F: hw/mips/mips_r4k.c
>
>  Fulong 2E
> --
> 2.21.0
>
>