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

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

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On Monday, November 25, 2019, 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).
>
>
Please don't start any deprecation process. This requires certain
consultation within my company. Rest assured that everyone's opinion will
be taken into account while doing consiltation.

Aleksandar

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>
> ---
>  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
>
>
>

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