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Re: [PATCH v20210701 12/40] tools: unify type checking for data pfns in migration stream
- To: Olaf Hering <olaf@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 5 Jul 2021 14:10:09 +0100
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- Cc: Ian Jackson <iwj@xxxxxxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Juergen Gross <jgross@xxxxxxxx>
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 01/07/2021 10:56, Olaf Hering wrote:
> Introduce a helper which decides if a given pfn in the migration
> stream is backed by memory.
>
> This specifically deals with type XEN_DOMCTL_PFINFO_XALLOC, which was
> a synthetic toolstack-only type used in Xen 4.2 to 4.5. It indicated a
> dirty page on the sending side for which no data will be send in the
> initial iteration.
What do you mean "This specifically deals with" ?
AFACT, the code before was correct.
~Andrew
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