[Qemu-devel] Re: [PATCH] kvm: Fix overlapping check for memory slots

[Avi Kivity]

Jan Kiszka wrote:
> This nice little buglet complicates a smarter slot management in qemu
> user space just "slightly". Sigh...
>
> -------->
>
> When checking for overlapping slots on registration of a new one, kvm
> currently also considers zero-length (ie. deleted) slots and rejects
> requests incorrectly. This finally denies user space from joining slots.
> Fix the check by skipping deleted slots.
>   

Can userspace fail gracefully when the bug is present?  If not, the you 
should add a KVM_CAP_ to advertise the fix; without the capability don't 
attempt the smarter slot management.


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