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Re: [PATCH 1/4] vhost: Re-enable vrings after setting features


From: Michael S. Tsirkin
Subject: Re: [PATCH 1/4] vhost: Re-enable vrings after setting features
Date: Thu, 13 Apr 2023 11:48:24 -0400

On Thu, Apr 13, 2023 at 05:24:36PM +0300, Anton Kuchin wrote:
> But is there a valid use-case for logging some dirty memory but not all?
> I can't understand if this is a feature or a just flaw in specification.

IRC the use-case originally conceived was for shadow VQs.  If you use
shadow VQs the VQ access by backend does not change memory since shadow
VQ is not in memory. Not a practical concern right now but there you
have it.

-- 
MST




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