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Re: [PATCH v3 6/6] xen: retrieve reserved pages on populate_physmap
- To: Penny Zheng <Penny.Zheng@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 5 May 2022 16:23:23 +0200
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- Cc: Wei Chen <Wei.Chen@xxxxxxx>, Henry Wang <Henry.Wang@xxxxxxx>, 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" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 05 May 2022 14:23:31 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 05.05.2022 15:44, Penny Zheng wrote:
> I misunderstand what you suggested here, I thought you were suggesting a way
> of stub function
> which could bring some optimization.
> The reason I introduced free_staticmem_pages and acquire_reserved_page here
> is that
> we now used them in common code, and if they are not defined(using stub) on
> !CONFIG_STATIC_MEMORY,
> we will have " hidden symbol `xxx' isn't defined " compilation error.
This is what I've asked for clarification about: If such errors surface,
I'd like to understand why the respective call sites aren't DCE-ed by
the compiler.
Jan
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