subject:"\[Xen\-devel\] \[PATCH v4 6\/6\] VMX\: Fixup PI descritpor when cpu is offline"

Re: [Xen-devel] [PATCH v4 6/6] VMX: Fixup PI descritpor when cpu is offline

2016-09-28 Thread Wu, Feng

> -Original Message- > From: Jan Beulich [mailto:jbeul...@suse.com] > Sent: Monday, September 26, 2016 9:03 PM > To: Wu, Feng > Cc: andrew.coop...@citrix.com; dario.faggi...@citrix.com; > george.dun...@eu.citrix.com; Tian, Kevin ; xen- >

Re: [Xen-devel] [PATCH v4 6/6] VMX: Fixup PI descritpor when cpu is offline

2016-09-26 Thread Jan Beulich

>>> On 21.09.16 at 04:37, wrote: > +void vmx_pi_desc_fixup(int cpu) > +{ > +unsigned int new_cpu, dest; > +unsigned long flags; > +struct arch_vmx_struct *vmx, *tmp; > +spinlock_t *new_lock, *old_lock = _cpu(vmx_pi_blocking, cpu).lock; > +struct list_head

[Xen-devel] [PATCH v4 6/6] VMX: Fixup PI descritpor when cpu is offline

2016-09-20 Thread Feng Wu

When cpu is offline, we need to move all the vcpus in its blocking list to another online cpu, this patch handles it. Signed-off-by: Feng Wu --- v4: - Remove the pointless check since we are in machine stop context and no other cpus go down in parallel.