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Re: [Xen-devel] [PATCH 2/2] xen/mm: Introduce PG_state_uninitialised
- To: "Xia, Hongyan" <hongyxia@xxxxxxxxxx>, "jbeulich@xxxxxxxx" <jbeulich@xxxxxxxx>
- From: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
- Date: Fri, 07 Feb 2020 17:06:58 +0000
- Cc: "sstabellini@xxxxxxxxxx" <sstabellini@xxxxxxxxxx>, "julien@xxxxxxx" <julien@xxxxxxx>, "wl@xxxxxxx" <wl@xxxxxxx>, "konrad.wilk@xxxxxxxxxx" <konrad.wilk@xxxxxxxxxx>, "george.dunlap@xxxxxxxxxxxxx" <george.dunlap@xxxxxxxxxxxxx>, "andrew.cooper3@xxxxxxxxxx" <andrew.cooper3@xxxxxxxxxx>, "ian.jackson@xxxxxxxxxxxxx" <ian.jackson@xxxxxxxxxxxxx>, "george.dunlap@xxxxxxxxxx" <george.dunlap@xxxxxxxxxx>, "jeff.kubascik@xxxxxxxxxxxxxxx" <jeff.kubascik@xxxxxxxxxxxxxxx>, "stewart.hildebrand@xxxxxxxxxxxxxxx" <stewart.hildebrand@xxxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Fri, 07 Feb 2020 17:07:34 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 7 February 2020 16:40:01 GMT, "Xia, Hongyan" <hongyxia@xxxxxxxxxx> wrote:
>On Fri, 2020-02-07 at 16:32 +0000, David Woodhouse wrote:
>>
>> ...
>>
>> Ideally not because init_heap_pages() then calls free_heap_pages()
>> and the "recursion" is best avoided.
>
>Kind of depends on where we change its pg to initialised. If we do that
>in free_heap_pages this does recurse, but if it is done in
>init_heap_pages before calling free it does not.
True. It would *look* like it might recurse, but never should in practice.
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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