Re: [Qemu-devel] qemu-system-sh4 -M r2d serial is broken.

[Aurelien Jarno]

On 2017-05-18 17:37, Rob Landley wrote:
> 
> 
> On 05/18/2017 02:00 PM, Aurelien Jarno wrote:
> > On 2017-05-18 11:08, Rob Landley wrote:
> >> Serial input hangs after the first character in the 4.11 kernel:
> >>
> >>   http://www.spinics.net/lists/linux-sh/msg51183.html
> >>
> >> Because they enabled support for a buffer size thing QEMU doesn't
> >> emulate right:
> >>
> >>   http://www.spinics.net/lists/linux-sh/msg51189.html
> > 
> > Indeed the SCIF emulation in QEMU is quite limited. The problem is that
> > it exposes many internal states to the software (and that's the same for
> > the SH4 CPU in general), and that's not really compatible with quick
> > emulation. In that case the timer should depend on the baud rate which
> > we don't really emulate.
> > 
> > I'll try to have a look, that said my test environment is stuck with
> > kernel 4.8 due to the broken futex support on UP in kernel 4.9 (and
> > that's not QEMU specific). I'll try to build a more recent kernel with
> > additional patches.
> 
> I thought Rich fixed that. Rich?
> 

I have sent a patch already, but TTBOMK it hasn't been applied yet.

Aurelien

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
address@hidden                 http://www.aurel32.net