linux-kernel - Re: linux-next: Tree for Jun 2 (arch/powerpc/kernel/iommu.c)

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Message-ID: <208f3734-4902-ff5c-3410-5b9cd984dad7@infradead.org>
Date:   Thu, 15 Jun 2023 09:13:12 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Timothy Pearson <tpearson@...torengineering.com>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        Alexey Kardashevskiy <aik@...abs.ru>
Subject: Re: linux-next: Tree for Jun 2 (arch/powerpc/kernel/iommu.c)



On 6/15/23 09:05, Timothy Pearson wrote:
> 
> 
> ----- Original Message -----
>> From: "Randy Dunlap" <rdunlap@...radead.org>
>> To: "Timothy Pearson" <tpearson@...torengineering.com>, "Michael Ellerman" <mpe@...erman.id.au>
>> Cc: "Stephen Rothwell" <sfr@...b.auug.org.au>, "Linux Next Mailing List" <linux-next@...r.kernel.org>, "linux-kernel"
>> <linux-kernel@...r.kernel.org>, "linuxppc-dev" <linuxppc-dev@...ts.ozlabs.org>, "Alexey Kardashevskiy" <aik@...abs.ru>
>> Sent: Thursday, June 15, 2023 11:00:08 AM
>> Subject: Re: linux-next: Tree for Jun 2 (arch/powerpc/kernel/iommu.c)
> 
>> Hi Timothy,
>>
>> On 6/3/23 20:57, Timothy Pearson wrote:
>>>
>>>
>>> ----- Original Message -----
>>>> From: "Michael Ellerman" <mpe@...erman.id.au>
>>>> To: "Randy Dunlap" <rdunlap@...radead.org>, "Stephen Rothwell"
>>>> <sfr@...b.auug.org.au>, "Linux Next Mailing List"
>>>> <linux-next@...r.kernel.org>
>>>> Cc: "linux-kernel" <linux-kernel@...r.kernel.org>, "linuxppc-dev"
>>>> <linuxppc-dev@...ts.ozlabs.org>, "Alexey
>>>> Kardashevskiy" <aik@...abs.ru>, "Timothy Pearson"
>>>> <tpearson@...torengineering.com>
>>>> Sent: Saturday, June 3, 2023 7:22:51 PM
>>>> Subject: Re: linux-next: Tree for Jun 2 (arch/powerpc/kernel/iommu.c)
>>>
>>>> Randy Dunlap <rdunlap@...radead.org> writes:
>>>>> On 6/1/23 21:01, Stephen Rothwell wrote:
>>>>>> Hi all,
>>>>>>
>>>>>> Changes since 20230601:
>>>>>>
>>>>>
>>>>> On powerpc64, a randconfig failed with:
>>>>>
>>>>> In file included from ../include/linux/list.h:5,
>>>>>                  from ../include/linux/preempt.h:11,
>>>>>                  from ../include/linux/spinlock.h:56,
>>>>>                  from ../include/linux/mmzone.h:8,
>>>>>                  from ../include/linux/gfp.h:7,
>>>>>                  from ../include/linux/slab.h:15,
>>>>>                  from ../arch/powerpc/kernel/iommu.c:15:
>>>>> ../arch/powerpc/kernel/iommu.c: In function
>>>>> 'spapr_tce_setup_phb_iommus_initcall':
>>>>> ../arch/powerpc/kernel/iommu.c:1391:36: error: 'hose_list' undeclared (first use
>>>>> in this function); did you mean 'zonelist'?
>>>>>  1391 |         list_for_each_entry(hose, &hose_list, list_node) {
>>>>>       |                                    ^~~~~~~~~
>>>> ...
>>>>
>>>> hose_list is in pci-common.c which is built when PCI=y.
>>>>
>>>> PSERIES and POWERNV force PCI=y.
>>>>
>>>> But this config has neither:
>>>>
>>>> # CONFIG_PPC_POWERNV is not set
>>>> # CONFIG_PPC_PSERIES is not set
>>>> CONFIG_HAVE_PCI=y
>>>> # CONFIG_PCI is not set
>>>> # CONFIG_COMMON_CLK_RS9_PCIE is not set
>>>>
>>>>
>>>> Probably the spapr_tce code should be wrapped in an #ifdef that is only
>>>> enabled when POWERNV || PSERIES is enabled.
>>>>
>>>> cheers
>>>
>>> Sounds reasonable, I was going to look into this further over the weekend.  I
>>> can put together a patch for Monday if that works?
>>
>> Did you prepare a patch for this? I am still seeing this build error.
>>
>> thanks.
>> --
>> ~Randy
> 
> Yes, it was sent in to the linuxppc-dev list some weeks ago.  Did it not arrive?

I don't know - I'm not subscribed to that list.

It's probably still in the patchworks review cycle
so it hasn't been applied anywhere that gets into linux-next.

thanks.
-- 
~Randy