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Re: [Xen-devel] [PATCH v2 1/2] x86/acpi: add retrieval function for rsdp address

On Sun, Jan 28, 2018 at 4:04 PM, Andy Shevchenko
<andy.shevchenko@xxxxxxxxx> wrote:
> On Fri, Jan 26, 2018 at 8:21 PM, Juergen Gross <jgross@xxxxxxxx> wrote:
>> On 26/01/18 19:08, Andy Shevchenko wrote:
>>> On Thu, Jan 25, 2018 at 4:36 PM, Juergen Gross <jgross@xxxxxxxx> wrote:
>>>> Add a function to get the address of the RSDP table. Per default use a
>>>> __weak annotated function being a nop.
>>> The problem with weak functions that we can't have more than one
>>> implementation per kernel while we would like to built several code
>>> paths.
>>> I have stumbled on the similar stuff and realize that.
>>> Perhaps, one of the solution is to have an additional struct under
>>> x86_init to alternate ACPI related stuff.
>> I think we can go that route when another user of that interface is
>> appearing.
> Why not to establish the struct? At least this route I would like to
> go with [1].
> [1]: https://lkml.org/lkml/2018/1/17/834

Maybe I'm a bit slow today, but care to explain what exactly you mean?

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