[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] qemu-system-sh4 -M r2d serial is broken.
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] qemu-system-sh4 -M r2d serial is broken. |
Date: |
Fri, 19 May 2017 01:01:41 +0200 |
User-agent: |
NeoMutt/20170113 (1.7.2) |
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