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Re: [Xen-devel] [PATCH v4 2/2] sysctl: report shadow paging capability
- To: Roger Pau Monne <roger.pau@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Thu, 12 Sep 2019 10:51:58 +0100
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Tim Deegan <tim@xxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, Julien Grall <julien.grall@xxxxxxx>, Christian Lindig <christian.lindig@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, David Scott <dave@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>
- Delivery-date: Thu, 12 Sep 2019 09:52:11 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 10/09/2019 16:25, Roger Pau Monne wrote:
> diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
> index 3ff67792a7..e8f5ebe929 100644
> --- a/tools/libxl/libxl.h
> +++ b/tools/libxl/libxl.h
> @@ -401,6 +401,12 @@
> */
> #define LIBXL_HAVE_PHYSINFO_CAP_HAP 1
>
> +/*
> + * LIBXL_HAVE_PHYSINFO_CAP_HAP indicates that libxl_physinfo has a cap_shadow
> + * field that indicates whether software implemented paging is supported.
> + */
> +#define LIBXL_HAVE_PHYSINFO_CAP_SHADOW 1
> +
Is it really worth doing this, and not extending the previous define?
Very little point having two going into the tree at the same time.
> diff --git a/tools/ocaml/libs/xc/xenctrl.ml b/tools/ocaml/libs/xc/xenctrl.ml
> index a5e77c943a..9f56e1df1a 100644
> --- a/tools/ocaml/libs/xc/xenctrl.ml
> +++ b/tools/ocaml/libs/xc/xenctrl.ml
> @@ -108,6 +108,7 @@ type physinfo_cap_flag =
> | CAP_PV
> | CAP_DirectIO
> | CAP_hap
> + | CAP_shadow
Similarly as with HAP, this should at least be Shadow to match DirectIO.
Can be fixed on commit.
~Andrew
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