RE: [Xen-devel] hvc0 xvc0 "compatibility"?

[Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>]

Yes, that's the one.  Thanks much for pointing it out.

> -----Original Message-----
> From: Ian Campbell [mailto:Ian.Campbell@xxxxxxxxxx]
> Sent: Wednesday, June 24, 2009 2:24 AM
> To: Dan Magenheimer
> Cc: Xen-Devel (E-mail)
> Subject: Re: [Xen-devel] hvc0 xvc0 "compatibility"?
> 
> 
> On Tue, 2009-06-23 at 16:00 -0400, Dan Magenheimer wrote:
> > I have a (RHEL5) guest that I alternate booting with a 2.6.18-xen
> > kernel and an upstream kernel.
> > 
> > Upstream uses hvc0 for the console and 2.6.18-xen uses xvc0.  To
> > switch between them, I manually modify /etc/inittab.  If I
> > forget to do this, I get no login prompt and have to destroy
> > the domain, restart selecting the other kernel, etc.
> > 
> > Do I recall a patch that allows one of these kernels to
> > handle both hvc0 and xvc0?  That would make my life easier.
> > Or is this something that can be done in userland?
> 
> I think you are thinking of linux-2.6.18-xen.hg 762:a070228ac76e "add
> hvc compatibility mode to xencons". If you add xencons=hvc to your
> kernel command line then 2.6.18 will use hvc and since pvops will just
> ignore the unknown option you won't need to keep switching 
> stuff around.
> 
> Ian.
> 
> > 
> > Thanks,
> > Dan
> > 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel
> 
>

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