netdev - Re: [PATCH net-next] stmmac: align RX buffers

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Message-ID: <20210816081208.522ac47c@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 16 Aug 2021 08:12:08 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Matteo Croce <mcroce@...ux.microsoft.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        "David S. Miller" <davem@...emloft.net>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Drew Fustini <drew@...gleboard.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Jon Hunter <jonathanh@...dia.com>,
        Will Deacon <will@...nel.org>
Subject: Re: [PATCH net-next] stmmac: align RX buffers

On Thu, 12 Aug 2021 12:05:38 +0100 Marc Zyngier wrote:
> > A possible fix, which takes in account also the XDP headroom for
> > stmmac_rx_buf1_len() only could be (only compile tested, I don't have
> > the hardware now):  
> 
> However, this doesn't fix my issue. I still get all sort of
> corruption. Probably stmmac_rx_buf2_len() also need adjusting (it has
> a similar logic as its buf1 counterpart...)
> 
> Unless you can fix it very quickly, and given that we're towards the
> end of the cycle, I'd be more comfortable if we reverted this patch.

Any luck investigating this one? The rc6 announcement sounds like there
may not be that many more rc releases for 5.14.