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Re: [PATCH v1 2/2] common: dom0less-bindings: introduce XSM labels
- To: Sergiy Kibrik <Sergiy_Kibrik@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 31 Aug 2026 11:19:05 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 31 Aug 2026 10:19:33 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 27/08/2026 10:38 am, Sergiy Kibrik wrote:
> diff --git a/xen/common/device-tree/Makefile b/xen/common/device-tree/Makefile
> index 9036e455d6..e4de292533 100644
> --- a/xen/common/device-tree/Makefile
> +++ b/xen/common/device-tree/Makefile
> @@ -11,3 +11,5 @@ obj-$(CONFIG_DOMAIN_BUILD_HELPERS) += kernel.o
> obj-$(CONFIG_STATIC_EVTCHN) += static-evtchn.init.o
> obj-$(CONFIG_STATIC_MEMORY) += static-memory.init.o
> obj-$(CONFIG_STATIC_SHM) += static-shmem.init.o
> +
> +CFLAGS-y += -I$(srctree)/xsm/flask/include
> diff --git a/xen/common/device-tree/dom0less-bindings.c
> b/xen/common/device-tree/dom0less-bindings.c
> index 41d72d0d58..bffd2ec65d 100644
> --- a/xen/common/device-tree/dom0less-bindings.c
> +++ b/xen/common/device-tree/dom0less-bindings.c
> @@ -11,6 +11,8 @@
> #include <public/bootfdt.h>
> #include <public/domctl.h>
>
> +#include <security.h>
> +
security.h is a private header for internals of flask. Requiring the
CFLAGS += -I should have been a hint.
If a suitable public function doesn't exist, then make one rather than
inserting a layering violation.
To this specifically, I'm not sure security_context_to_sid() handing out
SECINITSID_XEN if you happen to call it too early is the wisest
behaviour. It's current call-chain has an earlier check which I think
excludes this from occurring.
~Andrew
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