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<div class="moz-cite-prefix">Il 14/08/2013 13:21, Michael S. Tsirkin
ha scritto:<br>
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<blockquote cite="mid:20130814112154.GF5315@redhat.com" type="cite">
<pre wrap="">On Wed, Aug 14, 2013 at 01:16:24PM +0200, Laszlo Ersek wrote:
</pre>
<blockquote type="cite">
<pre wrap="">On 08/14/13 12:54, Fabio Fantoni wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Il 14/08/2013 11:56, Laszlo Ersek ha scritto:
</pre>
<blockquote type="cite">
<pre wrap="">On 08/14/13 11:19, Fabio Fantoni wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Tried with qemu 1.4.2 and it works also with 4 gb of ram.
This ram regression seems to be introduced with qemu 1.5, and there is
another regression more critical with qemu 1.6.
</pre>
</blockquote>
<pre wrap="">Can you save qemu's stderr for the 1.5->1.6 regression?
</pre>
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<pre wrap="">Tried to add seabios debug options to domU xl configuration file...
device_model_args=["-chardev
stdio,id=seabios","-device","isa-debugcon,iobase=0x402,chardev=seabios"]
But it doesn't boot
/var/log/xen/qemu-dm-W7.log
qemu-system-x86_64: -chardev stdio,id=seabios: invalid option
</pre>
</blockquote>
<pre wrap="">That's probably because you forgot to break up this option into
separate python list entries:
device_model_args=["-chardev", "stdio,id=seabios", "-device",
"isa-debugcon,iobase=0x402,chardev=seabios"]
Laszlo
</pre>
</blockquote>
<pre wrap="">
Thanks for your reply and sorry for my very stupid error.
I retried with the correct parameters and on both cases (2 gb of ram
working and 4gb of ram not working) I get only this one more line on
qemu log:
Start bios (version debian/1.7.3-1-1-ga76c6f1-dirty-20130813_122010-test)
The probable cause is that on xen, seabios doesn't generate some tables
but it takes the static ones from hvmloader.
</pre>
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<pre wrap="">
Without having any specifics in mind, maybe this can be attributed to
the ACPI table move that affects both qemu and seabios, and hvmloader is
the collateral damage. Probably stuff should be updated in qemu/seabios
so that hvmloader be happy again. CC'ing Michael...
Of course I might as well be completely off.
Laszlo
</pre>
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<pre wrap="">
Seems unlikely - the ACPI table move code is still in my tree.
</pre>
</blockquote>
I see on 1.6 changelog:<br>
<br>
...<br>
QEMU can expose the full set of ACPI tables to the guest: See <a
href="http://wiki.qemu.org/Features/ACPITableGeneration"
title="Features/ACPITableGeneration">Features/ACPITableGeneration</a><br>
...<br>
<br>
Could be this the regression problem of 1.6?<br>
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