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SubjectRe: [RFC PATCH 0/6] Add support for shared PTEs across processes
On Wed, Jan 26, 2022 at 11:16:42AM +0100, David Hildenbrand wrote:
> A while ago I talked with Peter about an extended uffd (here: WP)
> mechanism that would work on fds instead of the process address space.

As far as I can tell, uffd is a grotesque hack that exists to work around
the poor choice to use anonymous memory instead of file-backed memory
in kvm. Every time I see somebody mention it, I feel pain.

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