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

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----- Original Message -----
> From: "Michael Ellerman" <mpe@xxxxxxxxxxxxxx>
> To: "Randy Dunlap" <rdunlap@xxxxxxxxxxxxx>, "Stephen Rothwell" <sfr@xxxxxxxxxxxxxxxx>, "Linux Next Mailing List"
> <linux-next@xxxxxxxxxxxxxxx>
> Cc: "linux-kernel" <linux-kernel@xxxxxxxxxxxxxxx>, "linuxppc-dev" <linuxppc-dev@xxxxxxxxxxxxxxxx>, "Alexey
> Kardashevskiy" <aik@xxxxxxxxx>, "Timothy Pearson" <tpearson@xxxxxxxxxxxxxxxxxxxxx>
> 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@xxxxxxxxxxxxx> 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?



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