Pranavkumar Sawargaonkar <pranavku...@linaro.org> writes: > On 18 April 2013 12:21, Rusty Russell <ru...@rustcorp.com.au> wrote: >> >> PranavkumarSawargaonkar <pranavku...@linaro.org> writes: >> > From: Pranavkumar Sawargaonkar <pranavku...@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.
But implementing virtio inside a bootloader has already been done for coreboot, for example. A bootloader probably wants a virtio block device, so a console is trivial. A single writable field for debugging makes sense. Anything more is far less certain. Thanks, Rusty. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
