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6763a0aea6
We've had an unknown Turing issue for a while with page faults since
large pages and compression.
I've got a patch series that syncs all our L2 handling with ogkm and it
made this fault happen more.
After writing a bunch of debugging patches, I spotted an invalid LPT
entry where there should have been a valid one.
A 64K MAP succeeds on a range, but a subsequent SPT put drops SPT refs
across multiple ranges,
We shouldn't assume all ranges where SPTEs go away will have the same
sparse/invalid/valid state, just iterate over each instead and do the
right thing.
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Fixes: d19512f5ab ("nouveau/vmm: start tracking if the LPT PTE is valid. (v6)")
Link: https://patch.msgid.link/20260615044737.3419585-1-airlied@gmail.com
[ Properly format commit message. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
(cherry picked from commit d008141ed4ce924167a03d46fbce9ad1fe4efa29)
Signed-off-by: Dave Airlie <airlied@redhat.com>