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From: Thomas Monjalon <thomas@monjalon.net>
To: Yangchao Zhou <zhouyates@gmail.com>
Cc: dev@dpdk.org, Ferruh Yigit <ferruh.yigit@intel.com>,
	stephen@networkplumber.org, sodey@rbbn.com,
	Junxiao Shi <sunnylandh@gmail.com>
Subject: Re: [dpdk-dev] [PATCH v3] kni: fix possible kernel crash with va2pa
Date: Mon, 15 Jul 2019 22:50:21 +0200
Message-ID: <1662932.6VjZo4KV3e@xps> (raw)
In-Reply-To: <c2f7ac07-920e-d04b-b367-657546ff53cb@intel.com>

11/07/2019 09:46, Ferruh Yigit:
> On 7/10/2019 9:09 PM, Ferruh Yigit wrote:
> > On 6/25/2019 4:04 PM, Yangchao Zhou wrote:
> >> va2pa depends on the physical address and virtual address offset of
> >> current mbuf. It may get the wrong physical address of next mbuf which
> >> allocated in another hugepage segment.
> >>
> >> In rte_mempool_populate_default(), trying to allocate whole block of
> >> contiguous memory could be failed. Then, it would reserve memory in
> >> several memzones that have different physical address and virtual address
> >> offsets. The rte_mempool_populate_default() is used by
> >> rte_pktmbuf_pool_create().
> >>
> >> Fixes: 8451269e6d7b ("kni: remove continuous memory restriction")
> >>
> >> Signed-off-by: Yangchao Zhou <zhouyates@gmail.com>
> > 
> > Overall looks good to me, not from this patch but can you please check below
> > comment too.
> > Also there is a comment from Junxiao, lets clear it before the ack.
> > 
> 
> Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

The commit log does not really explained neither the use case
nor the solution. But as you acked it...
Applied, thanks




      reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-28  7:30 [PATCH] " Yangchao Zhou
2019-03-06 17:31 ` Ferruh Yigit
2019-06-14 18:41   ` [dpdk-dev] " Dey, Souvik
2019-03-12  9:22 ` [PATCH v2] " Yangchao Zhou
2019-03-19 18:35   ` Ferruh Yigit
2019-03-22 20:49   ` Ferruh Yigit
2019-06-18  4:06     ` [dpdk-dev] " Dey, Souvik
2019-06-18 15:48   ` Stephen Hemminger
2019-06-25 15:04   ` [dpdk-dev] [PATCH v3] " Yangchao Zhou
2019-07-02 20:07     ` [dpdk-dev] [v3] " Junxiao Shi
2019-07-10 20:11       ` Ferruh Yigit
2019-07-10 20:40         ` yoursunny
2019-07-10 21:23           ` Ferruh Yigit
2019-07-10 23:52             ` yoursunny
2019-07-10 20:09     ` [dpdk-dev] [PATCH v3] " Ferruh Yigit
2019-07-11  7:46       ` Ferruh Yigit
2019-07-15 20:50         ` Thomas Monjalon [this message]

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