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Re: [Xen-devel] [xen-unstable bisection] complete test-amd64-i386-rhel6hvm-intel



On 09/01/11 18:26, Ian Jackson wrote:

job test-amd64-i386-rhel6hvm-intel

   changeset:   23802:bb9b81008733
   user:        Laszlo Ersek<lersek@xxxxxxxxxx>
   date:        Wed Aug 31 15:16:14 2011 +0100

       x86: Increase the default NR_CPUS to 256

       Changeset 21012:ef845a385014 bumped the default to 128 about one and a
       half years ago. Increase it now to 256, as systems with eg. 160
       logical CPUs are becoming (have become) common.

       Signed-off-by: Laszlo Ersek<lersek@xxxxxxxxxx>

My bisector is pretty reliable nowadays.  Looking at the revision
graph it tested before/after/before/after/before/after, ie three times
each on the same host.

This change looks innocuous enough TBH.  Is there any way this change
could have broken a PV-on-HVM guest ?  Note that RHEL6, which is what
this is testing, seems to generally be full of bugs.

If the problem is indeed a bug in the current RHEL6 then I will add
this test to the "do not care" list.

In what way was the guest broken? How many physical cores/threads was the hypervisor running on?

Thanks,
lacos

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