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Date: Fri, 17 Oct 2014 15:29:23 -0400 (EDT) From: David Miller <davem@...emloft.net> To: eric.dumazet@...il.com Cc: cwang@...pensource.com, kkolasa@...soft.pl, edumazet@...il.com, netdev@...r.kernel.org Subject: Re: something is wrong in commit 971f10eca1 - tcp: better TCP_SKB_CB layout to reduce cache line misses From: Eric Dumazet <eric.dumazet@...il.com> Date: Wed, 15 Oct 2014 14:42:34 -0700 > On Wed, 2014-10-15 at 14:39 -0700, Eric Dumazet wrote: >> On Wed, 2014-10-15 at 13:36 -0700, Cong Wang wrote: >> > On Wed, Oct 15, 2014 at 3:35 AM, Krzysztof Kolasa <kkolasa@...soft.pl> wrote: >> > > >> > > one-line patch not resolve problem, fix created by Cong Wang resolves >> > > problem !!! >> > > >> > > tested on 64bit system and working OK >> > > >> > >> > So my patch fixes your problem on 64bit but not on 32bit, >> > is this correct? >> > >> > I will send out the patch. And as Eric said, the problem on 32bit >> > might be a different issue, we can definitely fix it separately. >> > >> > Thanks for testing! >> >> I think more fixes are needed. >> >> This is most probably an IPv6 issue. >> > > Yes, ipv6 uses inet6_iif() a lot. We need to use a different accessor. So I applied Cong's patches, but if I am to understand the testing feedback so far only the 64-bit case of the reporter's problems is fixed, and that the 32-bit graphics corruption still happens. Can I get some clarification of where we stand after Cong's fixes which are already merged into 'net'? Thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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