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Re: [PATCH v2] xen/arm: fix build with HAS_PCI
- To: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 10 Jun 2025 17:37:41 +0100
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Tue, 10 Jun 2025 16:37:52 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 10/06/2025 5:32 pm, Roger Pau Monné wrote:
> On Tue, Jun 10, 2025 at 12:16:42PM -0400, Stewart Hildebrand wrote:
>> On 6/10/25 11:51, Roger Pau Monné wrote:
>>> On Tue, Jun 10, 2025 at 10:22:57AM -0400, Stewart Hildebrand wrote:
>>>> In file included from ./include/xen/pci.h:72,
>>>> from drivers/pci/pci.c:8:
>>>> ./arch/arm/include/asm/pci.h:131:50: error: ‘struct rangeset’ declared
>>>> inside parameter list will not be visible outside of this definition or
>>>> declaration [-Werror]
>>>> 131 | static inline int pci_sanitize_bar_memory(struct rangeset *r)
>>>> | ^~~~~~~~
>>>> cc1: all warnings being treated as errors
>>>>
>>>> Fixes: 4acab25a9300 ("x86/vpci: fix handling of BAR overlaps with non-hole
>>>> regions")
>>>> Signed-off-by: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
>>> Sorry, it was my fault.
>> No worries, it's pretty hard to catch when it can't be built without
>> extra patches.
>>
>>> Would it make sense to introduce a Gitlab build that has HAS_PCI
>>> enabled? Or it won't build either without extra patches?
>> It requires one extra patch ("xen/arm: pci: introduce PCI_PASSTHROUGH
>> Kconfig option"):
>>
>> https://lore.kernel.org/xen-devel/20231113222118.825758-1-stewart.hildebrand@xxxxxxx/T/#t
>>
>> It has an ack, although it needs a rebase and we would probably want to
>> add HAS_VPCI_GUEST_SUPPORT now that upstream has that config too.
> I think it would be helpful to be able to do a Gitlab build with
> HAS_PCI enabled on ARM, otherwise it's inevitable for build issues to
> creep in sadly.
This is what randconfig is for, and randconfig is active for arm64.
If something is preventing this configuration from being picked, that
ought to be fixed.
But, ARM already has a lot (too many) unconditional builds of specific
feature combinations, and I don't think we want more.
~Andrew
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