✗ Fi.CI.BUILD: failure for mm: distinguish PTE tab le storage from PTE values (rev3)

== Series Details ==

Series: mm: distinguish PTE table storage from PTE values (rev3)
URL   : https://patchwork.freedesktop.org/series/171389/
State : failure

== Summary ==

Error: patch https://patchwork.freedesktop.org/api/1.0/series/171389/revisions/3/mbox/ not applied
Applying: mm: introduce hw_pte_t for PTE table storage
Applying: mm: make hw_pte_t visible to generic PTE interfaces
Applying: mm: name pointers to copied PTE values ptentp
Applying: mm: use hw_pte_t for generic PTE table storage
error: sha1 information is lacking or useless (include/linux/pgtable.h).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0004 mm: use hw_pte_t for generic PTE table storage
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
Build failed, no error log produced