Commit c3f0fd79 authored by Suren Baghdasaryan's avatar Suren Baghdasaryan
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ANDROID: disable page table moves when speculative page faults are enabled 



move_page_tables() can move entire pmd or pud without locking individual
ptes. This is problematic for speculative page faults which do not take
mmap_lock because they rely on ptl lock when writing new pte value. To
avoid possible race, disable move_page_tables() optimization when
CONFIG_SPECULATIVE_PAGE_FAULT is enabled.

Bug: 257443051
Change-Id: Ib48dda08ecad1abc60d08fc089a6566a63393c13
Signed-off-by: default avatarSuren Baghdasaryan <surenb@google.com>
parent 3d3b77c9
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