Messages in this thread | | | Date | Thu, 18 Apr 2013 13:02:40 +0530 | Subject | Re: [RFC] arm64: Early printk support for virtio-mmio console devices. | From | Pranavkumar Sawargaonkar <> |
| |
On 18 April 2013 12:21, Rusty Russell <rusty@rustcorp.com.au> wrote: > > PranavkumarSawargaonkar <pranavkumar@linaro.org> writes: > > From: Pranavkumar Sawargaonkar <pranavkumar@linaro.org> > > > > This patch implements early printk support for virtio-mmio console devices without using any hypercalls. > > This makes some sense, though not sure that early console *read* makes > much sense. I can see the PCI version of this being useful as well.
Read can be useful for "mach-virt" which will have only virtio console as a console device. Then if someone wants to have UEFI or any other boot-loader emulation, which expects user to input few things, in that case read might become handy. > > > The spec definition for this will be interesting, because it can be used > before the device is initialized (something which is generally > verboten). > > Cheers, > Rusty.
Thanks, Pranav
| |