Re: [PATCH v2 2/7] i40e: Use smp_rmb rather than read_barrier_depends

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On Fri, 17 Nov 2017 11:05:44 -0600
Brian King <brking@xxxxxxxxxxxxxxxxxx> wrote:

> The original issue being fixed in this patch was seen with the ixgbe
> driver, but the same issue exists with i40e 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@xxxxxxxxx>



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