Re: [PATCH 7/8] membarrier: Remove arm (32) support for SYNC_CORE

From: Andy Lutomirski
Date: Thu Jun 17 2021 - 20:07:09 EST

On 6/15/21 8:21 PM, Andy Lutomirski wrote:
> On arm32, the only way to safely flush icache from usermode is to call
> cacheflush(2). This also handles any required pipeline flushes, so
> membarrier's SYNC_CORE feature is useless on arm. Remove it.

After all the discussion, I'm dropping this patch.