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Re: [Xen-users] Heterogeneous XCP 1.6 pool

On Tue, 06/25/2013 12:00 PM, Eduardo Bragatto <eduardo@xxxxxxxxxxxx> 
> Hi Neal,
> Thanks for sharing your setup. I'm also using the compare-cpu script the
> same as you, however after I run "host-set-cpu-features" and reboot the
> server, it does not come back with the mask set -- "features" is still the
> same as  "physical_features".
> Did you do anything else besides running "host-set-cpu-features" and
> rebooting?


The host-set-cpu-features is the only command I run and it sticks. I'm not 
quite sure why it isn't sticking for you. 
Here is my /boot/extlinux.conf:

label xe
  # XCP
  kernel mboot.c32
  append /boot/xen.gz mem=1024G dom0_mem=752M,max:752M watchdog_timeout=300 cpui
d_mask_xsave_eax=0 lowmem_emergency_pool=1M crashkernel=64M@32M console=vga vga=
mode-0x0311 cpuid_mask_ecx=0x000ce3bd cpuid_mask_ext_edx=0x20100800 dom0_max_vcp
us=1-4 --- /boot/vmlinuz-2.6-xen root=LABEL=root-odcfwbhu ro xencons=hvc console
=hvc0 console=tty0 quiet vga=785 splash --- /boot/initrd-2.6-xen.img

Seems like cpuid_mask_ecx and cpuid_mask_edx are key here..

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