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[Xen-devel] [PATCH 1] Fix vcpu hotplug bug: transfer vcpu_avail hex string to qemu


  • To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Liu, Jinsong" <jinsong.liu@xxxxxxxxx>
  • Date: Thu, 18 Mar 2010 23:33:38 +0800
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Cc: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Delivery-date: Thu, 18 Mar 2010 08:36:45 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcrGsGG0bX7JtHmsQ3+8RgCmmIDg3w==
  • Thread-topic: [PATCH 1] Fix vcpu hotplug bug: transfer vcpu_avail hex string to qemu

Fix vcpu hotplug bug: transfer vcpu_avail hex string to qemu 

Currently qemu has a bug: When maxvcpus > 64, qemu will get wrong 
vcpu bitmap (s->cpus_sts[i]) since it only get bitmap from a long variable. 

This patch, cooperate with another qemu patch, is to fix this bug.
This patch transfer a vcpu_avail string in a hex string format, so that 
at qemu side it's more easier to get vcpu bitmap from hex string, especially 
when many vcpus, like more than 64.

Signed-off-by: Liu, Jinsong <jinsong.liu@xxxxxxxxx>

Attachment: python_vcpuhotplug_fixbug.patch
Description: python_vcpuhotplug_fixbug.patch

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