netdev - Re: DomU's network interface will hung when Dom0 running 32bit

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Date:	Wed, 16 Oct 2013 09:46:43 +0100
From:	Ian Campbell <Ian.Campbell@...rix.com>
To:	annie li <annie.li@...cle.com>
CC:	jianhai luan <jianhai.luan@...cle.com>,
	Wei Liu <wei.liu2@...rix.com>,
	<xen-devel@...ts.xenproject.org>, <netdev@...r.kernel.org>
Subject: Re: DomU's network interface will hung when Dom0 running 32bit

On Wed, 2013-10-16 at 15:10 +0800, annie li wrote:
> Is it a timer to be set as less than ULONG_MAX/2 to avoid
> credit_timeout.expires rolling over? But the problem is that we can
> not assure where jiffies start from, and this probably results into
> current issue again.

Not less than the absolute value ULONG_MAX/2, just less than ULONG_MAX/2
offset from "now". The time_eq macros deal with wraparound.

Looks like Jianhai and Wei are discussing a better fix than an
additional timer though.

Ian

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