* Where did KVM go in 2.6.22-git9?
@ 2007-07-20 3:28 Bill Davidsen
2007-07-20 7:35 ` Avi Kivity
0 siblings, 1 reply; 2+ messages in thread
From: Bill Davidsen @ 2007-07-20 3:28 UTC (permalink / raw)
To: Linux Kernel M/L
I just built a 2.6.22-git9 kernel, and when I run oldconfig it (a) sets
the processor type to pentium-pro, and (b) the KVM stuff simply isn't in
the config. Before I spend a lot of time on this, was it disabled
temporarily for some reason, or is it a known bug, or ???
Processor is a Core2 E6600, and the starting config has KVM.
Strong suggestion: put KVM in processor type and options, and if the CPU
type selected supports the feature, let the builder turn it on in one
place and have Kconfig turn on whatever voodoo is needed to allow it,
rather than have people trying to find out what depends have changed
with each release. I see KVm depends on X86_CMPXCHG64 which simply
doesn't seem to be defined directly anywhere.
Going back to 2.6.21.6 until whatever changed is at least documented.
--
Bill Davidsen <davidsen@tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Where did KVM go in 2.6.22-git9?
2007-07-20 3:28 Where did KVM go in 2.6.22-git9? Bill Davidsen
@ 2007-07-20 7:35 ` Avi Kivity
0 siblings, 0 replies; 2+ messages in thread
From: Avi Kivity @ 2007-07-20 7:35 UTC (permalink / raw)
To: Bill Davidsen; +Cc: Linux Kernel M/L
Bill Davidsen wrote:
> I just built a 2.6.22-git9 kernel, and when I run oldconfig it (a)
> sets the processor type to pentium-pro, and (b) the KVM stuff simply
> isn't in the config. Before I spend a lot of time on this, was it
> disabled temporarily for some reason, or is it a known bug, or ???
>
> Processor is a Core2 E6600, and the starting config has KVM.
>
> Strong suggestion: put KVM in processor type and options, and if the
> CPU type selected supports the feature, let the builder turn it on in
> one place and have Kconfig turn on whatever voodoo is needed to allow
> it, rather than have people trying to find out what depends have
> changed with each release. I see KVm depends on X86_CMPXCHG64 which
> simply doesn't seem to be defined directly anywhere.
>
> Going back to 2.6.21.6 until whatever changed is at least documented.
>
Kconfig changes got kvm temporarily disabled on i386 nonpae. Current
-git has it back.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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