From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: Bhushan Bharat-R65777 <R65777@freescale.com>
Cc: "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: Powerpc: Kernel warn_on when enabling IOMMU_API
Date: Tue, 13 Aug 2013 10:11:18 +1000 [thread overview]
Message-ID: <520979A6.8040200@ozlabs.ru> (raw)
In-Reply-To: <6A3DF150A5B70D4F9B66A25E3F7C888D0710E32E@039-SN2MPN1-013.039d.mgd.msft.net>
On 08/13/2013 02:14 AM, Bhushan Bharat-R65777 wrote:
>
>
>> -----Original Message-----
>> From: Alexey Kardashevskiy [mailto:aik@ozlabs.ru]
>> Sent: Monday, August 12, 2013 7:44 PM
>> To: Bhushan Bharat-R65777
>> Cc: benh@kernel.crashing.org; linuxppc-dev@lists.ozlabs.org
>> Subject: Re: Powerpc: Kernel warn_on when enabling IOMMU_API
>>
>> On 08/12/2013 08:20 PM, Bhushan Bharat-R65777 wrote:
>>> And this simple fix work for me
>>> diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
>>> index b20ff17..8869b0d 100644
>>> --- a/arch/powerpc/kernel/iommu.c
>>> +++ b/arch/powerpc/kernel/iommu.c
>>> @@ -48,6 +48,8 @@
>>> #include <asm/vio.h>
>>> #include <asm/tce.h>
>>>
>>> +#define DEBUG
>>> +
>>> #define DBG(...)
>>>
>>> static int novmerge;
>>> @@ -871,7 +873,7 @@ void iommu_free_coherent(struct iommu_table *tbl, size_t
>> size,
>>> }
>>> }
>>>
>>> -#ifdef CONFIG_IOMMU_API
>>> +#ifdef SPAPR_TCE_IOMMU
>>> /*
>>> * SPAPR TCE API
>>> */
>>> ----------------------
>>
>>
>> And with this fix, what does "ls -laR /sys/kernel/iommu_groups/" print?
>
> It shows the list of group id and respective devices:
>
Is it vanilla 3.11-rc1 kernel? Wow. What does "lspci" show there?
--
Alexey
next prev parent reply other threads:[~2013-08-13 0:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-12 10:20 Powerpc: Kernel warn_on when enabling IOMMU_API Bhushan Bharat-R65777
2013-08-12 14:13 ` Alexey Kardashevskiy
2013-08-12 16:14 ` Bhushan Bharat-R65777
2013-08-13 0:11 ` Alexey Kardashevskiy [this message]
2013-08-13 10:44 ` Bhushan Bharat-R65777
2013-08-13 12:54 ` Alexey Kardashevskiy
2013-08-13 15:30 ` Bhushan Bharat-R65777
2013-08-12 16:52 ` Bhushan Bharat-R65777
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