[PATCH v13 6/7] arm: KVM: dirty log read write protect support

Paolo Bonzini pbonzini at redhat.com
Fri Nov 7 23:28:50 PST 2014

On 07/11/2014 20:47, Mario Smarduch wrote:
>> That can happen if the error occurred in the final
>> copy to userspace, after page tables have been modified.
> Upon error return userspace should terminate logging, error out whether
> used for migration or other use cases, with some stale spte TLBs cached
> read/write, which doesn't appear to be harmful.

Fair enough; for x86 I elected to always do the TLB flush, but you can
do it differently.  Perhaps add a comment with the above paragraph, thouhg.

> But you mention 'final copy' which makes me think I'm missing something?

I meant final copy before leaving the function.


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