Re: [Xen-devel] Question about the usage of spinlock

["Xu, Quan" <quan.xu@xxxxxxxxx>]

On May 26, 2016 9:31 AM, 조현권 <chkwon91@xxxxxxxxx> wrote:
> I am studying xen 4.6.0 version now and wonder the usage of spinlock which is 
> located in free_heap_pages(xen/common/page_alloc. c)
> As its memory setup is ahead of multicore initialization, spinlock seems to 
> be unnecessary during booting because it uses only single core
> spinlock looks required after multicore initialization finished and when xen 
> needs to free memory space during work
> However i experimented not to use spin lock in free_heap_pages and 
> dom0(linux-kernel) was booted well. It does not cause any error using 
> internet or application program even reboot
> Are therr any special reason to use spinlock?
> My experiment environment was ODROID-XU4 which uses arm architecture

Ah, you can try to test more for DomU..
Quan
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