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

[Philippe Mathieu-Daudé]

On 11/25/19 3:45 PM, Aleksandar Markovic wrote:
> 
> 
> On Monday, November 25, 2019, Philippe Mathieu-Daudé <philmd at redhat.com 
> <mailto:philmd at 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.

While I think both listed maintainers need to confirm this patch 
(Aurelien and Aleksandar Rikalo), anyone is welcome to object :)

Aurelien already acked to step down:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg658363.html

We will wait for your consultation. Meanwhile, patch postponed to 5.0.

>     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 at redhat.com
>     <mailto:philmd at 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
> 
>     + at 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 at aurel32.net <mailto:aurelien at aurel32.net>>
>       R: Aleksandar Rikalo <aleksandar.rikalo at rt-rk.com
>     <mailto:aleksandar.rikalo at rt-rk.com>>
>     -S: Maintained
>     +S: Obsolete
>       F: hw/mips/mips_r4k.c
> 
>       Fulong 2E
>     -- 
>     2.21.0
> 
>