[Intel-wired-lan] [PATCH v2 6/7] fm10k: Use smp_rmb rather than read_barrier_depends

[Jesse Brandeburg]

On Fri, 17 Nov 2017 11:05:48 -0600
Brian King <brking at linux.vnet.ibm.com> wrote:

> The original issue being fixed in this patch was seen with the ixgbe
> driver, but the same issue exists with fm10k as well, as the code is
> very similar. read_barrier_depends is not sufficient to ensure
> loads following it are not speculatively loaded out of order
> by the CPU, which can result in stale data being loaded, causing
> potential system crashes.

Acked-by: Jesse Brandeburg <jesse.brandeburg at intel.com>