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Re: [PATCH v2 (resend) 03/27] xen/vmap: Introduce vmap_size() and use it
- To: Elias El Yandouzi <eliasely@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 25 Jan 2024 17:26:49 +0100
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- Cc: julien@xxxxxxx, pdurrant@xxxxxxxxxx, dwmw@xxxxxxxxxx, Julien Grall <jgrall@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 25 Jan 2024 16:26:57 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 16.01.2024 20:25, Elias El Yandouzi wrote:
> From: Julien Grall <jgrall@xxxxxxxxxx>
>
> vunmap() and vfree() currently duplicate the (small) logic to find the
> size of an vmap area. In a follow-up patch, we will want to introduce
> another one (this time externally).
>
> So introduce a new helper vmap_size() that will return the number of
> pages in the area starting at the given address. Take the opportunity
> to replace the open-coded version.
>
> Note that vfree() was storing the type of the area in a local variable.
> But this seems to have never been used (even when it was introduced).
>
> Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>
> Signed-off-by: Elias El Yandouzi <eliasely@xxxxxxxxxx>
I'm not really happy with exposing the function, but alternatives coming
to mind for the next patch aren't great either. Hence
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
Jan
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