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

[Aleksandar Markovic]

On Wed, Nov 27, 2019 at 10:17 PM Philippe Mathieu-Daudé
<philmd at redhat.com> wrote:
>
> Hi Aleksandar,
>
> On 11/27/19 7:47 PM, Aleksandar Markovic wrote:
> > On Mon, Nov 25, 2019 at 11:41 AM Philippe Mathieu-Daudé
> > <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).
> >>
> >> 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.
> >>
>
> Since you queued this patch, do you mind adding Aurelien comment to the
> patch description, as it appears important information:
>
> '''
> The Linux kernel support for this machine has been dropped more
> than 10 years ago in this commit:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=302922e5f6901eb6f29c58539631f71b3d9746b8
> '''
>
> I was not sure when sending the patch, but as an improvement, we can
> also remove Aurelien and Aleksandar Rikalo from the MAINTAINERS section.
>
> And I assume we can also add (which was explicit in your previous patch):
> Acked-by: Aurelien Jarno <aurelien at aurel32.net>
>
> If you want I can resend this patch with all that amended.
>

No need to resend, I'll fix the things while applying.

> >> 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>
> >> ---
> >>   qemu-deprecated.texi | 5 +++++
> >>   hw/mips/mips_r4k.c   | 1 +
> >>   MAINTAINERS          | 2 +-
> >>   3 files changed, 7 insertions(+), 1 deletion(-)
> >>
> >
> > Applied to MIPS queue.
> >
> >> 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>
> >>   R: Aleksandar Rikalo <aleksandar.rikalo at rt-rk.com>
> >> -S: Maintained
> >> +S: Obsolete
> >>   F: hw/mips/mips_r4k.c
> >>
> >>   Fulong 2E
> >> --
> >> 2.21.0
> >>
> >>
> >
>