Re: [PATCH] kvm: add EVER_MAPPED ioctl and capability

Sean Christopherson <[email protected]>
Newsgroups gmane.linux.documentation,gmane.comp.emulators.kvm.devel,gmane.linux.kernel
Message-ID <[email protected]> 
On Fri, Jul 31, 2026, Florian Schmidt wrote:
> This allows a VMM to keep track of which pages were mapped by the guest
> at any point.

So does userfaultfd.  Any performance concerns with UFFD should be addressed by
KVM Userfault, which is on my todo list for this year.

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