From: ALeX Wang <ee07b291@gmail.com>
To: Thomas Monjalon <thomas.monjalon@6wind.com>
Cc: Ferruh Yigit <ferruh.yigit@intel.com>, dev@dpdk.org
Subject: Re: [dpdk-dev] [4.4 kernel] kni lockup, kernel dump
Date: Thu, 14 Apr 2016 15:02:03 -0700 [thread overview]
Message-ID: <CANmyKO4kD2PFdrBKQ_U_c61MOEfSidOU0awYf0qi+MGsiGJ46A@mail.gmail.com> (raw)
In-Reply-To: <1933005.8eilLGqekQ@xps13>
Thx, Ferruh and Thomas for the confirmation and pointer!
On 14 April 2016 at 07:43, Thomas Monjalon <thomas.monjalon@6wind.com>
wrote:
> 2016-04-14 15:29, Ferruh Yigit:
> > On 4/13/2016 11:26 PM, ALeX Wang wrote:
> > > Did more experiment, found that it has nothing to do with the kernel
> > > version,
> > >
> > > It only happens when using kni module with '--no-huge' eal flag...
> > >
> > > Is that expected?
> > >
> >
> > Yes.
> > KNI kernel module expects mempool is physically continuous, with
> > '--no-huge' flag this is no more true, and as a result KNI module can
> > access to incorrect address.
>
> This is a bug.
> The memory API should allow to explicit this restriction and return
> an error if it cannot offer the requested continuous memory.
> See this thread for discussion:
> http://dpdk.org/ml/archives/dev/2016-April/037444.html
>
--
Alex Wang,
Open vSwitch developer
prev parent reply other threads:[~2016-04-14 22:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-13 0:19 ALeX Wang
2016-04-13 0:28 ` ALeX Wang
2016-04-13 22:26 ` ALeX Wang
2016-04-14 14:29 ` Ferruh Yigit
2016-04-14 14:43 ` Thomas Monjalon
2016-04-14 22:02 ` ALeX Wang [this message]
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