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[Qemu-devel] Re: [PATCH] QEMU - provide e820 reserve through qemu_cfg


From: Jes Sorensen
Subject: [Qemu-devel] Re: [PATCH] QEMU - provide e820 reserve through qemu_cfg
Date: Mon, 25 Jan 2010 22:24:23 +0100
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091209 Fedora/3.0-4.fc12 Lightning/1.0pre Thunderbird/3.0

On 01/25/10 22:08, Alexander Graf wrote:

On 25.01.2010, at 22:05, Jes Sorensen wrote:
Only problem is that we don't really have a way to pass back info
saying 'you messed up trying to pinch an area that the BIOS wants
for itself'.

Eh - the BIOS shouldn't even try to use regions that are declared as reserved 
using this interface.
I guess we're mostly talking about DMI and ACPI tables. They can be anywhere in 
RAM.

What I had in mind with the above was the situation where a user tries
to reserve a region that is hardcoded into the BIOS, such as the address
of the BIOS text/data etc.

I don't think it would be a real problem anyway, if some user wants to
play with it, they have to take the risk of shooting themself in the
foot :)

Cheers,
Jes





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