[ kvm-Bugs-1953353 ] could not load PC BIOS '/path/to/bios.bin' on "-m 4096"

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Bugs item #1953353, was opened at 2008-04-28 07:50
Message generated for change (Settings changed) made by aliguori
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Category: None
Group: None
Status: Open
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Rafal Wijata (ravpl)
Assigned to: Nobody/Anonymous (nobody)
Summary: could not load PC BIOS '/path/to/bios.bin' on "-m 4096"

Initial Comment:
The maximum amount of memory I can give to kvm is ~3560M

I run custom compiled kvm-66 on F8 box with
Linux mailhub 2.6.24.4-64.fc8 #1 SMP Sat Mar 29 09:15:49 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
The modules are loaded from F8 kernel, rather than those shipped with kvm-66

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Comment By: Izik Eidus (izike)
Date: 2008-04-30 10:12

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above 4 giga support in kvm, work stable just for kernel modules with
userspace memory allocation (kvm 50~, or 2.6.25)
however there is no actually any limitation in making it work for older
kernel modules,
i will take a look on it, (but it will take me few weeks until i will
touch it)

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Comment By: Marcelo Tosatti (mtosatti)
Date: 2008-04-30 09:30

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This bug can be marked as CLOSED.

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Comment By: Rafal Wijata (ravpl)
Date: 2008-04-30 08:53

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Indeed, I grabbed the kvm-67, recompiled, and loaded modules that comes
with kvm(kvm-intel).
After that I could give to the guest even 6G of ram.

And BTW, after I loaded those modules I was able to assign more than 4
CPUs to the guest as well(I remember there's such bug here).

Thanx for prompt reply.

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Comment By: Marcelo Tosatti (mtosatti)
Date: 2008-04-29 21:34

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Can you reproduce the problem with the modules shipped with kvm-66?


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