On 6/30/22 05:24, Roger Pau Monné wrote: > On Wed, Jun 29, 2022 at 10:21:08PM -0400, Daniel P. Smith wrote: >> There are new capabilities, dom0less and hyperlaunch, that introduce internal >> hypervisor logic, which needs to make resource allocation calls that are >> protected by XSM access checks. The need for these resource allocations are >> necessary for dom0less and hyperlaunch when they are constructing the initial >> domain(s). This creates an issue as a subset of the hypervisor code is >> executed under a system domain, the idle domain, that is represented by a >> per-CPU non-privileged struct domain. To enable these new capabilities to >> function correctly but in a controlled manner, this commit changes the idle >> system domain to be created as a privileged domain under the default policy >> and >> demoted before transitioning to running. A new XSM hook, >> xsm_set_system_active(), is introduced to allow each XSM policy type to >> demote >> the idle domain appropriately for that policy type. In the case of SILO, it >> inherits the default policy's hook for xsm_set_system_active(). >> >> For flask, a stub is added to ensure that flask policy system will function >> correctly with this patch until flask is extended with support for starting >> the >> idle domain privileged and properly demoting it on the call to >> xsm_set_system_active(). >> >> Signed-off-by: Daniel P. Smith <dpsm...@apertussolutions.com> >> Reviewed-by: Jason Andryuk <jandr...@gmail.com> >> Reviewed-by: Luca Fancellu <luca.fance...@arm.com> >> Acked-by: Julien Grall <jgr...@amazon.com> # arm >> Reviewed-by: Rahul Singh <rahul.si...@arm.com> >> Tested-by: Rahul Singh <rahul.si...@arm.com> > > LGTM: > > Acked-by: Roger Pau Monné <roger....@citrix.com> > > Thanks, Roger.
Thank you.
