Re: [PATCH v2] KVM: Avoid zapping unrelated shadows in __kvm_set_memory_region()

[Avi Kivity <avi@xxxxxxxxxx>]

On 04/14/2012 12:33 AM, Marcelo Tosatti wrote:
> mmio sptes are not related to any particular slot (by definition),
> i think you misunderstood the purpose of this flush. It handles
>
> 1) [start, end] gpa range unmapped.
> 2) mmio sptes are created that map this range.
> 3) a new slot is created. mmio sptes that map [start, end] range,
> which is now backed by new memslot should be removed.
>
> Perhaps there is an efficient way to clear all mmio sptes, or all
> mmio sptes pointing to [start, end] (instead of all sptes), here.

It shouldn't be too hard for direct maps.  For indirect maps, there is
now way to reach the spte, since we can't rmap mmio sptes.

-- 
error compiling committee.c: too many arguments to function

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