From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
linaro-kernel@lists.linaro.org,
Anup Patel <anup.patel@linaro.org>,
patches@linaro.org, linux-kernel@vger.kernel.org,
"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC] arm64: Early printk support for virtio-mmio console devices.
Date: Thu, 18 Apr 2013 12:01:32 +0200 [thread overview]
Message-ID: <20130418100132.GE4998@game.jcrosoft.org> (raw)
In-Reply-To: <CAAHg+HiHKV+8hBT1QWe4hSxocCX6wpRd3bCPWB7zU8jVFmPuAA@mail.gmail.com>
On 13:02 Thu 18 Apr , Pranavkumar Sawargaonkar wrote:
> 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.
yes I'm adding barebox on arm64 and will need it for virt target
Best Regards,
J.
> >
> >
> > 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
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2013-04-18 10:12 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-18 5:52 PranavkumarSawargaonkar
2013-04-18 6:49 ` Marc Zyngier
2013-04-18 7:24 ` Pranavkumar Sawargaonkar
[not found] ` <CAAHg+HhajHFC=1nh6YQNgpf=Na2FqcsYJ=t+ag9QiTg6TxUz9w@mail.gmail.com>
2013-04-18 7:36 ` Marc Zyngier
2013-04-18 8:48 ` Pranavkumar Sawargaonkar
2013-04-18 8:53 ` Alexander Graf
2013-04-19 9:05 ` Will Deacon
2013-04-19 9:25 ` Pranavkumar Sawargaonkar
2013-04-19 9:27 ` Will Deacon
2013-04-19 9:30 ` Peter Maydell
2013-04-19 9:34 ` Pranavkumar Sawargaonkar
2013-04-19 9:39 ` Will Deacon
2013-04-19 10:05 ` Peter Maydell
2013-04-19 16:12 ` Catalin Marinas
2013-04-19 16:14 ` Peter Maydell
2013-04-19 16:22 ` Catalin Marinas
2013-04-19 16:33 ` Peter Maydell
2013-04-19 17:14 ` Catalin Marinas
2013-04-19 17:40 ` Peter Maydell
2013-04-19 9:36 ` Will Deacon
2013-04-18 19:06 ` Pranavkumar Sawargaonkar
2013-04-18 8:30 ` Peter Maydell
2013-04-18 8:51 ` Alexander Graf
2013-04-18 8:51 ` Marc Zyngier
2013-04-18 6:51 ` Rusty Russell
2013-04-18 7:32 ` Pranavkumar Sawargaonkar
2013-04-18 8:44 ` Alexander Graf
2013-04-18 8:55 ` Pranavkumar Sawargaonkar
2013-04-18 10:01 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2013-04-22 1:21 ` Rusty Russell
2013-04-22 3:10 ` Anup Patel
2013-04-22 5:15 ` Rusty Russell
2013-04-23 5:53 ` Pranavkumar Sawargaonkar
2013-04-22 14:50 ` Alexander Graf
2013-04-18 15:25 ` Christopher Covington
2013-04-18 15:59 ` Marc Zyngier
2013-04-18 18:59 ` Pranavkumar Sawargaonkar
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