Re: [PATCH v4 11/14] sched: Reject CPU affinity changes based on arch_task_cpu_possible_mask()

2020-11-27 Thread Quentin Perret
On Tuesday 24 Nov 2020 at 15:50:36 (+), Will Deacon wrote: > Reject explicit requests to change the affinity mask of a task via > set_cpus_allowed_ptr() if the requested mask is not a subset of the > mask returned by arch_task_cpu_possible_mask(). This ensures that the > 'cpus_mask' for a

[PATCH v4 11/14] sched: Reject CPU affinity changes based on arch_task_cpu_possible_mask()

2020-11-24 Thread Will Deacon
Reject explicit requests to change the affinity mask of a task via set_cpus_allowed_ptr() if the requested mask is not a subset of the mask returned by arch_task_cpu_possible_mask(). This ensures that the 'cpus_mask' for a given task cannot contain CPUs which are incapable of executing it, except