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some typo fixes

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Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
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Wolfgang Bumiller 2018-01-10 11:45:49 +01:00
parent 2a50591126
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1 changed files with 6 additions and 6 deletions
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@ -311,7 +311,7 @@ The *PCID* CPU flag helps to improve performance of the Meltdown vulnerability
footnote:[Meltdown Attack https://meltdownattack.com/] mitigation approach. In
Linux the mitigation is called 'Kernel Page-Table Isolation (KPTI)', which
effectively hides the Kernel memory from the user space, which, without PCID,
is a expensive operation footnote:[PCID is now a critical performance/security
is an expensive operation footnote:[PCID is now a critical performance/security
feature on x86
https://groups.google.com/forum/m/#!topic/mechanical-sympathy/L9mHTbeQLNU].
@ -321,16 +321,16 @@ There are two requirements to reduce the cost of the mitigation:
* The guest Operating System must be updated to a version which mitigates the
attack and utilizes the PCID feature marked by its flag.
To check if the {pve} host support PCID, execute the following command as root:
To check if the {pve} host supports PCID, execute the following command as root:
----
# grep ' pcid ' /proc/cpuinfo
----
If this does not return empty your hosts CPU has support for PCID. If you use
`host' as CPU type and the guest OS is able to use it, your done.
Else, the PCID CPU flag needs to get set for the virtual CPU. This can be done,
for example, by editing the CPU through the WebUI.
If this does not return empty your host's CPU has support for PCID. If you use
`host' as CPU type and the guest OS is able to use it, you're done.
Otherwise you need to set the PCID CPU flag for the virtual CPU. This can be
done by editing the CPU options through the WebUI.
NUMA
^^^^