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Re: [Xen-devel] [PATCH v3 5/6] mm: add 'is_special_page' macro...
- To: "pdurrant@xxxxxxxx" <pdurrant@xxxxxxxx>
- From: Alan.Robinson@xxxxxxxxxxxxxx (Alan Robinson)
- Date: Fri, 6 Mar 2020 08:02:29 +0100
- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Wei Liu <wl@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Paul Durrant <pdurrant@xxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Tim Deegan <tim@xxxxxxx>, Tamas K Lengyel <tamas@xxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Fri, 06 Mar 2020 07:02:53 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Mail-followup-to: Alan.Robinson@xxxxxxxxxxxxxx, "pdurrant@xxxxxxxx" <pdurrant@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Wei Liu <wl@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Paul Durrant <pdurrant@xxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Tim Deegan <tim@xxxxxxx>, Tamas K Lengyel <tamas@xxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
A typo...
On Thu, Mar 05, 2020 at 01:45:03PM +0100, pdurrant@xxxxxxxx wrote:
>
> PGC_extra pages are intended to hold data structures that are associated
> with a domain and my be mapped by that domain. They should not be treated
s/my/may/
> as 'normal' guest pages (i.e. RAM or page tables). Hence, in many cases
> where code currently tests is_xen_heap_page() it should also check for
> the PGC_extra bit in 'count_info'.
>
> This patch therefore defines is_special_page() to cover both cases and
> converts tests if is_xen_heap_page() to is_special_page() where
> appropriate.
>
Alan
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