On Tue, 08 Sep 2026 13:32:09 +0100 "Lorenzo Stoakes (ARM)" <[email protected]> wrote:
> The majority of architectures in the kernel defer page table freeing until > an RCU grace period has elapsed, this series converts all remaining > architectures to do so too and eliminates CONFIG_MMU_GATHER_RCU_TABLE_FREE > altogether. > > This is important because it enables safe lockless page table walking under > RCU alone. > > Doing so allows for reduced lock contention, avoids lock ordering concerns > and enables fast, efficient and correct page table walking as a result. > > Additionally it removes a bunch of code and architecture-specific behaviour > which is always a beneficial thing to do. Thanks. It's early and unreviewed, but this is mainly an if-it-compiles-its-good thing, so I'll add it for exposure to the build/checker universe. > However some arches required extra attention - sh-X2, m68k-motorola and > sparc32. OK. Please lmk later if you think additional reviewer/tester attention is desirable in these areas.
