Re: [PATCHv2 net-next] net: ibm: emac: Clear MAL descriptors without memset

From: patchwork-bot+netdevbpf

Date: Mon Jun 08 2026 - 20:40:40 EST


Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Wed, 3 Jun 2026 16:07:53 -0700 you wrote:
> Clear MAL descriptor rings with explicit field stores instead of
> memset(). The descriptor rings are carved from MAL coherent DMA memory,
> which may be mapped uncached on 32-bit powerpc. The optimized memset()
> path can use dcbz there and trigger an alignment warning.
>
> Use WRITE_ONCE() for each field to prevent the compiler from merging
> the stores back into a memset() call.
>
> [...]

Here is the summary with links:
- [PATCHv2,net-next] net: ibm: emac: Clear MAL descriptors without memset
https://git.kernel.org/netdev/net-next/c/f0ba7f385de1

You are awesome, thank you!
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