Re: [PATCH] sched: fix scheduler_disable() with core scheduling

2020-04-16 Thread Dario Faggioli
On Thu, 2020-04-09 at 14:50 +0200, Jürgen Groß wrote: > On 09.04.20 11:41, Sergey Dyasli wrote: > > In core-scheduling mode, Xen might crash when entering ACPI S5 > > state. > > This happens in sched_slave() during is_idle_unit(next) check > > because > > next->vcpu_list is stale and points to an a

Re: [PATCH] sched: fix scheduler_disable() with core scheduling

2020-04-14 Thread Sergey Dyasli
(CC Igor) On 09/04/2020 13:50, Jürgen Groß wrote: > On 09.04.20 11:41, Sergey Dyasli wrote: >> In core-scheduling mode, Xen might crash when entering ACPI S5 state. >> This happens in sched_slave() during is_idle_unit(next) check because >> next->vcpu_list is stale and points to an already freed m

Re: [PATCH] sched: fix scheduler_disable() with core scheduling

2020-04-09 Thread Jürgen Groß
On 09.04.20 11:41, Sergey Dyasli wrote: In core-scheduling mode, Xen might crash when entering ACPI S5 state. This happens in sched_slave() during is_idle_unit(next) check because next->vcpu_list is stale and points to an already freed memory. This situation happens shortly after scheduler_disab

[PATCH] sched: fix scheduler_disable() with core scheduling

2020-04-09 Thread Sergey Dyasli
In core-scheduling mode, Xen might crash when entering ACPI S5 state. This happens in sched_slave() during is_idle_unit(next) check because next->vcpu_list is stale and points to an already freed memory. This situation happens shortly after scheduler_disable() is called if some CPU is still inside