>>> On 03.03.16 at 17:48, <jgr...@suse.com> wrote: > Some hardware (e.g. Dell studio 1555 laptops) require SMIs to be > called on physical cpu 0 only. Linux drivers like dcdbas or i8k try > to achieve this by pinning the running thread to cpu 0, but in Dom0 > this is not enough: the vcpu must be pinned to physical cpu 0 via > Xen, too. > > Add a stable hypercall option SCHEDOP_pin_override to the sched_op > hypercall to achieve this. It is taking a physical cpu number as > parameter. If pinning is possible (the calling domain has the > privilege to make the call and the cpu is available in the domain's > cpupool) the calling vcpu is pinned to the specified cpu. The old > cpu affinity is saved. To undo the override pinning a negative cpu > value is specified. This will restore the original cpu affinity of > the vcpu. > > Cc: George Dunlap <george.dun...@eu.citrix.com> > Cc: Dario Faggioli <dario.faggi...@citrix.com> > Cc: Jan Beulich <jbeul...@suse.com> > Cc: Andrew Cooper <andrew.coop...@citrix.com> > Cc: Ian Jackson <ian.jack...@eu.citrix.com> > Cc: David Vrabel <david.vra...@citrix.com> > Cc: Stefano Stabellini <stefano.stabell...@eu.citrix.com> > Cc: Wei Liu <wei.l...@citrix.com> > > Signed-off-by: Juergen Gross <jgr...@suse.com>
Acked-by: Jan Beulich <jbeul...@suse.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
