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![]() > The following are important CPU features that should be used on > Intel x86 hosts, when available in the host CPU. Some of them > require explicit configuration to enable, as they are not included > by default in some, or all, of the named CPU models listed above. > In general all of these features are included if using “Host > passthrough” or “Host model”. > > pcid: Recommended to mitigate the cost of the Meltdown > (CVE-2017-5754) fix. Included by default in Haswell, Broadwell & > Skylake Intel CPU models. Should be explicitly turned on for > Westmere, SandyBridge, and IvyBridge Intel CPU models. Note that > some desktop/mobile Westmere CPUs cannot support this feature. > > spec-ctrl: Required to enable the Spectre (CVE-2017-5753 and > CVE-2017-5715) fix, in cases where retpolines are not sufficient. > Included by default in Intel CPU models with -IBRS suffix. Must be > explicitly turned on for Intel CPU models without -IBRS suffix. > Requires the host CPU microcode to support this feature before it > can be used for guest CPUs. > > ssbd: Required to enable the CVE-2018-3639 fix. Not included by > default in any Intel CPU model. Must be explicitly turned on for > all Intel CPU models. Requires the host CPU microcode to support > this feature before it can be used for guest CPUs. > > pdpe1gbr: Recommended to allow guest OS to use 1GB size pages.Not > included by default in any Intel CPU model. Should be explicitly > turned on for all Intel CPU models. Note that not all CPU hardware > will support this feature. -- https://www.berrange.com/posts/2018/06/29/cpu-model-configuration-for-qemu-kvm-on-x86-hosts/ |
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debian | ||
PVE | ||
test | ||
.gitignore | ||
bootsplash.jpg | ||
bootsplash.xcf | ||
Makefile | ||
modules-load.conf | ||
pcitest.pl | ||
pve-bridge | ||
pve-bridge-hotplug | ||
pve-bridgedown | ||
pve-q35.cfg | ||
pve-usb.cfg | ||
qm | ||
qmextract | ||
qmrestore |