[PATCH 0/2] kvm: disable virtualization on kdump

[Avi Kivity]

Eric W. Biederman wrote:
>> I think I will get flamed if I try to pull to the core a bunch of code
>> that always lived in the KVM module.  8)
>>     
>
> Why is KVM modular anyway?  That seems like some pretty core cpu functionality...
>   

Many reasons.  Developers like the ability to rmmod and modprobe during 
development.  Distros like to keep their non-modular core small.  There 
is an external module distribution that allows users to graft a new kvm 
on an old kernel, which our testers and bleeding edge users like.  
Because it's there.

There's always CONFIG_KVM=y if you don't want it.

> Depending.  It doesn't sound like svm has the problem where init doesn't
> work so svm really doesn't need to do this.
>   

svm can writeback into memory at odd times if we don't do this, and the 
cost is small - clear a bit in EFER.  There's no reason to be lazy.

-- 
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