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

[Russell King (Oracle)]

On Tue, Jun 15, 2021 at 08:21:12PM -0700, 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.

Yay! About time too.

Acked-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!