Re: [ANNOUNCE] kvm-56 release

Avi Kivity
2007-12-16T11:34:56Z

Carlo Marcelo Arenas Belon wrote:
> On Thu, Dec 13, 2007 at 03:32:46PM +0200, Avi Kivity wrote:
>
>> Notes:
>> If you use the modules bundled with kvm-56, you can use any version
>> of Linux from 2.6.9 upwards.
>>
>
> the external module (once patched) will only be able to build against 2.6.17
> upwards because the in-kernel PIC/IOAPIC/LAPIC requires hrtimers and that
> functionality was only made public to external modules during the stabilization
> of 2.6.17 as seen by :
>
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=8d16b76421f0b3216012ee2d7819355e1cb847e5
>
> there are obviously 3 possible fixes :
>
> 1) rewrite the in-kernel PIC/IOAPIC/LAPIC not to use hrtimers (not worthy)
> 2) replicate the functionality needed in the compatibility header or with the
> use of a helper (not that simple)
> 3) disable the functionality and ifdef the code for kernel < 2.6.17
> (preferred)
>
> but before, I would like to ask: is 2.6.9 upwards support really needed?,

I imagine you're right, since there are few complaints. Most people
have migrated to RHEL 5 or its equivalents.

> the
> only reason why I would suspect that 2.6.9 was recommended was because of
> RHEL4

Yes.

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