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Date: Fri, 12 Apr 2019 10:10:41 -0700 (PDT) From: David Miller <davem@...emloft.net> To: dongli.zhang@...cle.com Cc: xen-devel@...ts.xenproject.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, wei.liu2@...rix.com, paul.durrant@...rix.com, joe.jin@...cle.com, junxiao.bi@...cle.com, jie.l.li@...cle.com Subject: Re: [PATCH 1/1] xen-netback: add reference from xenvif to backend_info to facilitate coredump analysis From: Dongli Zhang <dongli.zhang@...cle.com> Date: Fri, 12 Apr 2019 14:53:24 +0800 > During coredump analysis, it is not easy to obtain the address of > backend_info in xen-netback. > > So far there are two ways to obtain backend_info: > > 1. Do what xenbus_device_find() does for vmcore to find the xenbus_device > and then derive it from dev_get_drvdata(). > > 2. Extract backend_info from callstack of xenwatch (e.g., netback_remove() > or frontend_changed()). > > This patch adds a reference from xenvif to backend_info so that it would be > much more easier to obtain backend_info during coredump analysis. > > Signed-off-by: Dongli Zhang <dongli.zhang@...cle.com> Applied to net-next.
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