Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
KVM: Do not take reference to mm during async #PF
commit 62c49cc upstream. It turned to be totally unneeded. The reason the code was introduced is so that KVM can prefault swapped in page, but prefault can fail even if mm is pinned since page table can change anyway. KVM handles this situation correctly though and does not inject spurious page faults. Fixes: "INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected" warning while running LTP inside a KVM guest using the recent -next kernel. Reported-by: Sasha Levin <levinsasha928@gmail.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
- Loading branch information