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[Qemu-devel] how to pass pcid to guest?
From: |
Stefan Priebe - Profihost AG |
Subject: |
[Qemu-devel] how to pass pcid to guest? |
Date: |
Mon, 8 Jan 2018 21:03:11 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 |
Hello,
for meltdown mitigation and performance it's important to have the pcid
flag passed down to the guest (f.e.
https://groups.google.com/forum/m/#!topic/mechanical-sympathy/L9mHTbeQLNU).
My host shows the flag:
# grep ' pcid ' /proc/cpuinfo | wc -l
56
But the guest does not:
# grep pcid /proc/cpuinfo
#
Guest was started with:
-cpu IvyBridge,+kvm_pv_unhalt,+kvm_pv_eoi,enforce,vendor=GenuineIntel
Qemu is 2.9.1
Thanks!
Greets,
Stefan
- [Qemu-devel] how to pass pcid to guest?,
Stefan Priebe - Profihost AG <=