Re: [PATCH 7/8] membarrier: Remove arm (32) support for SYNC_CORE
From: "Russell King (Oracle)" <linux@armlinux.org.uk>
Date: 2021-06-16 09:29:03
Also in:
linux-arm-kernel, lkml
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) <redacted> -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!