On Fri, 27 Feb 2015, Ian Campbell wrote: > On Thu, 2015-02-26 at 18:22 +0000, Stefano Stabellini wrote: > > On Wed, 18 Feb 2015, Ian Campbell wrote: > > > On Wed, 2015-02-18 at 09:50 -0600, Rob Herring wrote: > > > > On Wed, Feb 18, 2015 at 7:51 AM, Julien Grall <julien.gr...@linaro.org> > > > > wrote: > > > > > From: Ard Biesheuvel <ard.biesheu...@linaro.org> > > > > > > > > > > This patch registers hvc0 as the preferred console if no console > > > > > has been specified explicitly on the kernel command line. > > > > > > > > > > The purpose is to allow platform agnostic kernels and boot images > > > > > (such as distro installers) to boot in a Xen/ARM domU without the > > > > > need to modify the command line by hand. > > > > > > > > How does this interact with DT chosen stdout-path? > > > > > > I think it shouldn't any more than the existing calls from e.g. the 8250 > > > driver to preferred_console do. > > > > > > > Is there a node for hvc0? > > > > > > Not a direct one, it is inferred from the presence of the general Xen > > > node. > > > > Xen PV consoles, including hvc0, as all the other Xen PV devices are > > advertised on xenstore. > > Do we actually use the xenstore node for hvc0? I thought we got it from > hvmparams (so the primary it can be used before xenstore is up)
We always assume that at least one PV console is available and the first one is a bit special because it can be setup before the xenstore driver for early boot messages and debugging purposes. However even the first console is advertised on xenstore. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
