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From: Jan Beulich <jbeulich@suse.com>
To: "Daniel P. Smith" <dpsmith@apertussolutions.com>
Cc: sstabellini@kernel.org, julien@xen.org,
	Volodymyr_Babchuk@epam.com, andrew.cooper3@citrix.com,
	george.dunlap@citrix.com, iwj@xenproject.org, wl@xen.org,
	roger.pau@citrix.com, tamas@tklengyel.com, tim@xen.org,
	jgross@suse.com, aisaila@bitdefender.com,
	ppircalabu@bitdefender.com, dfaggioli@suse.com, paul@xen.org,
	kevin.tian@intel.com, dgdegra@tycho.nsa.gov,
	adam.schwalm@starlab.io, scott.davis@starlab.io,
	xen-devel@lists.xenproject.org
Subject: Re: [RFC PATCH 08/10] xsm-silo: convert silo over to domain roles
Date: Thu, 8 Jul 2021 15:17:42 +0200	[thread overview]
Message-ID: <da689bf7-0e39-fdc6-c3f9-2ec1200f8f48@suse.com> (raw)
In-Reply-To: <20210514205437.13661-9-dpsmith@apertussolutions.com>

On 14.05.2021 22:54, Daniel P. Smith wrote:
> --- a/xen/xsm/silo.c
> +++ b/xen/xsm/silo.c
> @@ -17,9 +17,11 @@
>   * You should have received a copy of the GNU General Public License along with
>   * this program; If not, see <http://www.gnu.org/licenses/>.
>   */
> -#define XSM_NO_WRAPPERS
> -#include <xsm/dummy.h>
>  
> +#include <xsm/xsm.h>
> +#include <xsm/roles.h>
> +
> +#define SILO_ALLOWED_ROLES ( XSM_DOM_SUPER | XSM_DEV_BACK )

Assuming XSM_DEV_BACK means (or at least may also mean) a backend outside
of Dom0 serving another domain's frontend, ...

> @@ -29,8 +31,10 @@ static bool silo_mode_dom_check(const struct domain *ldom,
>  {
>      const struct domain *currd = current->domain;
>  
> -    return (is_control_domain(currd) || is_control_domain(ldom) ||
> -            is_control_domain(rdom) || ldom == rdom);
> +    return ( currd->xsm_roles & SILO_ALLOWED_ROLES ||
> +            ldom->xsm_roles & SILO_ALLOWED_ROLES ||
> +            rdom->xsm_roles & SILO_ALLOWED_ROLES ||
> +            ldom == rdom );

... I don't think this is an appropriate conversion. Aiui a backend in
a driver domain is out of reach for a domain in SILO mode.

Jan



  reply	other threads:[~2021-07-08 13:18 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-14 20:54 [RFC PATCH 00/10] xsm: introducing " Daniel P. Smith
2021-05-14 20:54 ` [RFC PATCH 01/10] headers: introduce new default privilege model Daniel P. Smith
2021-06-18 13:56   ` Jan Beulich
2021-05-14 20:54 ` [RFC PATCH 02/10] control domain: refactor is_control_domain Daniel P. Smith
2021-06-18 14:02   ` Jan Beulich
2021-05-14 20:54 ` [RFC PATCH 03/10] xenstore: migrate to default privilege model Daniel P. Smith
2021-05-14 20:54 ` [RFC PATCH 04/10] xsm: convert rewrite privilege check function Daniel P. Smith
2021-06-18 14:14   ` Jan Beulich
2021-05-14 20:54 ` [RFC PATCH 05/10] hardware domain: convert to domain roles Daniel P. Smith
2021-06-18 14:47   ` Jan Beulich
2021-05-14 20:54 ` [RFC PATCH 06/10] xsm-roles: covert the dummy system to roles Daniel P. Smith
2021-05-14 20:54 ` [RFC PATCH 07/10] xsm-roles: adjusting core xsm Daniel P. Smith
2021-05-14 20:54 ` [RFC PATCH 08/10] xsm-silo: convert silo over to domain roles Daniel P. Smith
2021-07-08 13:17   ` Jan Beulich [this message]
2021-05-14 20:54 ` [RFC PATCH 09/10] xsm-flask: clean up for domain roles conversion Daniel P. Smith
2021-05-14 20:54 ` [RFC PATCH 10/10] common/Kconfig: updating Kconfig for domain roles Daniel P. Smith

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