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Subject: Re: [Qemu-devel] [PATCH v4 4/5] acpi: arm: add fw_cfg device node
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To: Laszlo Ersek <lersek@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>, Andrew Jones <drjones@redhat.com>, Matt Fleming <matt.fleming@intel.com>, Eduardo Habkost <ehabkost@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, "Gabriel L. Somlo" <somlo@cmu.edu>, Ard Biesheuvel <ard.biesheuvel@linaro.org>, QEMU Developers <qemu-devel@nongnu.org>, Leif Lindholm <leif.lindholm@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, Shannon Zhao <zhaoshenglong@huawei.com>, Igor Mammedov <imammedo@redhat.com>, Marc =?ISO-8859-1?Q?Mar=ED?= <markmb@redhat.com>, Kevin OConnor <kevin@koconnor.net>, Richard Henderson <rth@twiddle.net>

  Hi,

> Here's a timing from my new company laptop (Thinkpad W541, i7-4810MQ CPU
> @ 2.80GHz, running docked); QEMU built with --enable-debug:

Almost the same here.

> (2) From launching the EFI stub until the login prompt appears on the
> serial console: 3 minutes 46 seconds

Less than half that time here.
Guess there is room to improve that for you ...

I'm running Fedora 22 as guest, minimal install, with stuff being added
as needed.

> Again, it depends on the services that are enabled in systemd, but you
> usually want to test with a guest OS that users normally run.

Depends.  Especially when mucking with firmware stuff this shouldn't be
that important, and gnome desktop install start alot more stuff, even
when booting into runlevel 3 only.

> So -- there's no bug, but TCG does not appear very suitable for testing
> in guest userspace *now*.

It's ok for testing now and then.  You don't want do actual development
with such a setup though.

cheers,
  Gerd