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From: Rajkumar Manoharan <rmanohar@codeaurora.org>
To: Ben Greear <greearb@candelatech.com>
Cc: nbd@openwrt.org, ath10k@lists.infradead.org, "Manoharan,
	Rajkumar" <rmanohar@qti.qualcomm.com>,
	"Valo, Kalle" <kvalo@qca.qualcomm.com>,
	nbd@nbd.name
Subject: Re: Regression in qca99x0 on x86 platform (kernel: 4.7.0-rc1-wt-ath
Date: Wed, 15 Jun 2016 08:25:34 +0530	[thread overview]
Message-ID: <f91f033b77e415fc14f94d5890115e09@codeaurora.org> (raw)
In-Reply-To: <57600A3C.9000104@candelatech.com>

On 2016-06-14 19:14, Ben Greear wrote:
> On 06/13/2016 11:21 PM, Rajkumar Manoharan wrote:
>> On 2016-06-02 23:22, Ben Greear wrote:
> 
>>> At the time, I bisected to this commit as well, but I decided to just
>>> live with it
>>> since it seemed it fixed some other bug and we had a work-around.  My
>>> understanding
>>> is that without the patch above, some ARM systems failed to work.
>>> 
>> Ben,
>> 
>> I posted a fix for the freeze issue 
>> (https://patchwork.kernel.org/patch/9175029/). Can you please give a 
>> try with VT-d disabled?
>> 
>> -Rajkumar
> 
> Yes, but it might be a bit.  I just ported my patches to 4.7, and will 
> add yours
> there.  We are mainly focussed on getting a stable 4.4+ out the door
> currently though.
> 
Thanks..

> Were you able to test on the ARM platform that originally had the 
> problem that
> Felix's patch was supposed to fix?
> 
I tested this patch on ARM platform. Unfortunately I did not observe 
original dma_alloc_coherent failures. Felix replaced dma_alloc_coherent 
by kmalloc + dma_map_single. I retained the logic as it is. Thee change 
is that host memory chuck size for target is limited by 256 KiB.

-Rajkumar

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  reply	other threads:[~2016-06-15  2:55 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-02 17:20 Regression in qca99x0 on x86 platform (kernel: 4.7.0-rc1-wt-ath Manoharan, Rajkumar
2016-06-02 17:27 ` Ben Greear
2016-06-02 17:46   ` Rajkumar Manoharan
2016-06-02 17:52     ` Ben Greear
2016-06-14  6:21       ` Rajkumar Manoharan
2016-06-14 13:44         ` Ben Greear
2016-06-15  2:55           ` Rajkumar Manoharan [this message]
2016-06-03 16:02 ` Valo, Kalle

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