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Re: [PATCH] xen/arm: acpi: Include header file for version number
- To: "leo.yan@xxxxxxxxxx" <leo.yan@xxxxxxxxxx>
- From: Bertrand Marquis <Bertrand.Marquis@xxxxxxx>
- Date: Tue, 6 Sep 2022 13:09:28 +0000
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Tue, 06 Sep 2022 21:50:26 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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- Thread-topic: [PATCH] xen/arm: acpi: Include header file for version number
Hi Leo,
> On 6 Sep 2022, at 12:31, Leo Yan <leo.yan@xxxxxxxxxx> wrote:
>
> On Arm64 Linux kernel prints log for Xen version number:
>
> [ 0.000000] Xen XEN_VERSION.XEN_SUBVERSION support found
>
> Because the header file "xen/compile.h" is missed, XEN_VERSION and
> XEN_SUBVERSION are not defined, thus compiler directly uses the
> string "XEN_VERSION" and "XEN_SUBVERSION" in the compatible string.
>
> This patch includes the header "xen/compile.h" which defines macros for
> XEN_VERSION and XEN_SUBVERSION, thus Xen can pass the version number via
> hypervisor node.
>
> Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
Very nice finding and side effect from stringify.
Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
Cheers
Bertrand
> ---
> xen/arch/arm/acpi/domain_build.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/xen/arch/arm/acpi/domain_build.c
> b/xen/arch/arm/acpi/domain_build.c
> index bbdc90f92c..2649e11fd4 100644
> --- a/xen/arch/arm/acpi/domain_build.c
> +++ b/xen/arch/arm/acpi/domain_build.c
> @@ -9,6 +9,7 @@
> * GNU General Public License for more details.
> */
>
> +#include <xen/compile.h>
> #include <xen/mm.h>
> #include <xen/sched.h>
> #include <xen/acpi.h>
> --
> 2.34.1
>
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