From: Anthony Liguori <aliguori@linux.vnet.ibm.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: kvm <kvm@vger.kernel.org>
Subject: Re: extboot: Purpose of cmd value
Date: Thu, 18 Feb 2010 08:07:17 -0600 [thread overview]
Message-ID: <4B7D4995.3090908@linux.vnet.ibm.com> (raw)
In-Reply-To: <4B7D481E.2090308@siemens.com>
On 02/18/2010 08:01 AM, Jan Kiszka wrote:
> Hi Anthony,
>
> I have to fix extboot for non-KVM usage which means pushing its
> variables to writable RAM (probably some spare INT vector(s) in the
> BASIC area).
>
> In that process, I stumbled over the cmd value passed to extboot_init,
> then stored in qemu_malloc'ed memory, and finally reported to the guest
> side via port 0x404. It's constant so far, always 1. So there is quite a
> bit unused code and data on both sides. Can we drop that?
>
Yes, that's historic from the days when extboot also did Linux kernel
loading. I don't see a problem dropping.
Regards,
Anthony Liguori
> Jan
>
>
prev parent reply other threads:[~2010-02-18 14:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-18 14:01 extboot: Purpose of cmd value Jan Kiszka
2010-02-18 14:07 ` Anthony Liguori [this message]
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