Barry Song song.bao.hua@hisilicon.com writes:
BATCHED_UNMAP_TLB_FLUSH is used on x86 to do batched tlb shootdown by sending one IPI to TLB flush all entries after unmapping pages rather than sending an IPI to flush each individual entry. On arm64, tlb shootdown is done by hardware. Flush instructions are innershareable. The local flushes are limited to the boot (1 per CPU) and when a task is getting a new ASID. So marking this feature as "TODO" is not proper. ".." isn't good as well. So this patch adds a "N/A" for this kind of features which are not needed on some architectures.
Cc: Mel Gorman mgorman@suse.de Cc: Andy Lutomirski luto@kernel.org Cc: Catalin Marinas catalin.marinas@arm.com Cc: Will Deacon will@kernel.org Signed-off-by: Barry Song song.bao.hua@hisilicon.com
Documentation/features/arch-support.txt | 1 + Documentation/features/vm/TLB/arch-support.txt | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-)
This had a conflict with the c6x removal, but I fixed that up and (finally) applied it, thanks.
jon