Displaying 2 results from an estimated 2 matches for "fullflush".
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2020 Jun 30
1
Do we need "amd_iommu=on" for AMD system anymore?
...even I do not do this action, IOMMU is still enabled
by kernel on AMD system.
After searching, I found there is no such setting any more, refer to
https://github.com/torvalds/linux/blob/master/Documentation/admin-guide/kernel-parameters.txt#L286
There are only 3 possible value as below:
amd_iommu= fullflush
off
force_isolation
Could anyone can help to confirm the changes? Thank you!
And another question, it is said that the "iommu=pt" option is to improves
IO performance for devices in the host, it is not a must for VF PCI
passthrough, right?
I'm not sure about the user cases.
[Refere...
2013 Jul 05
2
error after ugrade
...rors:
xm info
http://pastebin.com/qGdKdVft
dmesg
http://pastebin.com/uLBTH1se
IOMMU in BIOS: enable
Virtualization in BIOS: enable
grub kernel command line: root=UUID=2ecaab92-170f-4b51-a342-79c03fca0f3f ro
iommu=1 iommu_inclusive_mapping=1 xen-pciback.passthrough=1 elevator=noop
iommu=pt amd_iommu=fullflush xen-pciback.hide=(05:00.0)(05:00.1)(02:00.0)
xen-pciback.hide=(05:00.1) xen-pciback.hide=(02:00.0)
HW: gigabyte 970a-ds3, athlon-645 (guest VM already started successfully)
Or, otherwise it is a package bug, or my settings?
P.S. sorry for my english.
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