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Re: [PATCH v2 10/39] xen/riscv: introduce asm/iommu.h
- To: Oleksii <oleksii.kurochko@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 8 Dec 2023 11:21:07 +0100
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- Cc: Alistair Francis <alistair.francis@xxxxxxx>, Bob Eshleman <bobbyeshleman@xxxxxxxxx>, Connor Davis <connojdavis@xxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Fri, 08 Dec 2023 10:21:28 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 08.12.2023 10:29, Oleksii wrote:
> On Thu, 2023-12-07 at 15:22 +0100, Jan Beulich wrote:
>> On 24.11.2023 11:30, Oleksii Kurochko wrote:
>>> --- /dev/null
>>> +++ b/xen/arch/riscv/include/asm/iommu.h
>>> @@ -0,0 +1,7 @@
>>> +#ifndef __ASM_RISCV_IOMMU_H__
>>> +#define __ASM_RISCV_IOMMU_H__
>>> +
>>> +struct arch_iommu {
>>> +};
>>> +
>>> +#endif /* __ASM_IOMMU_H__ */
>>
>> Instead of adding this header, didn't we discuss to make the #include
>> in
>> xen/iommu.h depend on CONFIG_HAS_PASSTHROUGH? Also - no SPDX or
>> footer
>> here?
> We had discussion about some stuff in device.h, but we can apply it
> here too. Only to place will be needed to update:
>
>
> + #ifdef CONFIG_HAS_PASSTHROUGH
> #include <asm/iommu.h>
> + #endif
>
> #ifndef iommu_call
> # define iommu_call(ops, fn, args...) ((ops)->fn(args))
> # define iommu_vcall iommu_call
> #endif
>
> struct domain_iommu {
> + #ifdef CONFIG_HAS_PASSTHROUGH
> struct arch_iommu arch;
> + #endif
> ...
>
> I'll do that in the next iteration of this patch series.
What you suggest is to eliminate the need for an asm/ header. I asked
about an asm-generic/ one, though. (But I'd be okay either way, as long
as the redundancy is avoided.)
Jan
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