Re: [PATCH v2 0/6] mm, drm: fix interaction of .pfn_mkwrite() with fixup_user_fault()

[Paolo Bonzini]

On Mon, Oct 26, 2026 at 2:50 PM Sean Christopherson <seanjc@xxxxxxxxxx> wrote:
> > To sum up:
> >
> > - patches 1-3 introduce the new MM API, and use it in the DRM .fault()
> >   callbacks to install writable PTEs in response to write faults
> >
> > - patch 4 is a preparatory fix in KVM, eliminating inconsistencies in the
> >   handling of !VM_READ and !VM_WRITE VMAs; these would return different
> >   error codes for a !VM_WRITE VMA depending on whether the PTE happens
> >   to be mapped (but with wrong permissions).  This needs to be here
> >   because the next patch would introduce even more inconsistencies.
> >
> > - patch 5 moves the check for writable PTEs from follow_pfnmap_start()'s
> >   callers to the function itself
> >
> > - finally, patch 6 is a KVM addendum that will have to wait until
> >   the next merge window; it removes yet another inconsistency in
> >   KVM's handling of !VM_WRITE but is technically userspace-visible,
> >   and therefore it shouldn't be included in stable kernel releases
> >   unlike the rest.
>
> What happened to this series?  It seemed liked something semi-urgent, but AFAICT
> it got silently dropped?

It ballooned a bit and getting acks from everyone involved is hard...
Either I or Sergio will get back to it.

Paolo