[PATCH 3/4] mm: Add kernel MMU notifier to manage remote TLB

From: Huang Ying Shared Virtual Memory (SVM) devices have TLBs that cache entries from the CPU's page tables. We need SVM device drivers to flush them at the same time that we flush the CPU TLBs. We can use the existing MMU notifiers for userspace updates, but we lack a mechanism to get notifie

[PATCH 3/4] mm: Add kernel MMU notifier to manage remote TLB

From: Huang Ying Shared Virtual Memory (SVM) devices have TLBs that cache entries from the CPU's page tables. We need SVM device drivers to flush them at the same time that we flush the CPU TLBs. We can use the existing MMU notifiers for userspace updates, but we lack a mechanism to get notifie