Re: [Xen-devel] [PATCH 1/2] xen/x86: Move irq allocation from Xen smp_op.cpu_up()

2016-03-25 Thread Boris Ostrovsky
On 03/25/2016 11:10 AM, Konrad Rzeszutek Wilk wrote: On Thu, Mar 17, 2016 at 09:33:32AM -0400, Boris Ostrovsky wrote: Commit ce0d3c0a6fb1 ("genirq: Revert sparse irq locking around __cpu_up() and move it to x86 for now") reverted irq locking introduced by commit a89941816726 ("hotplug: Prevent

Re: [Xen-devel] [PATCH 1/2] xen/x86: Move irq allocation from Xen smp_op.cpu_up()

2016-03-25 Thread Konrad Rzeszutek Wilk
On Thu, Mar 17, 2016 at 09:33:32AM -0400, Boris Ostrovsky wrote: > Commit ce0d3c0a6fb1 ("genirq: Revert sparse irq locking around > __cpu_up() and move it to x86 for now") reverted irq locking > introduced by commit a89941816726 ("hotplug: Prevent alloc/free > of irq descriptors during cpu up/down"

[Xen-devel] [PATCH 1/2] xen/x86: Move irq allocation from Xen smp_op.cpu_up()

2016-03-19 Thread Boris Ostrovsky
Commit ce0d3c0a6fb1 ("genirq: Revert sparse irq locking around __cpu_up() and move it to x86 for now") reverted irq locking introduced by commit a89941816726 ("hotplug: Prevent alloc/free of irq descriptors during cpu up/down") because of Xen allocating irqs in both of its cpu_up ops. We can move