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RE: [Xen-devel] [PATCH] Allow to set >8 for NR_CPUS on x86_64 xenlinux


  • To: "Xen development list" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
  • Date: Fri, 18 Nov 2005 23:06:16 -0800
  • Delivery-date: Sat, 19 Nov 2005 07:06:19 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcXszTTWSLbLzxxJRkyM0PsRw6Qx2AACbbwA
  • Thread-topic: [Xen-devel] [PATCH] Allow to set >8 for NR_CPUS on x86_64 xenlinux

Nakajima, Jun wrote:
> The patch allows one to configure NR_CPUS >8 (16 by default, same as
> the native) for x86_64 xenlinux. I tested 16-way xenolinux (using
> changeset 7892) on a 16-way SMP machine with >8GB memory. It worked
> fine as long as I did sanity tests like kernel build (make -j64).
> 

BTW, 16-way PAE xenlinux also runs fine on the machine. This is the
first time that 16-way PAE xenlinux booted on that machine! Even a week
ago, it was failing to boot.

Jun
---
Intel Open Source Technology Center

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