Difference between revisions of "Checklist"
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*IOMMU to prevent DMA ghosting | *IOMMU to prevent DMA ghosting | ||
| + | <pre> | ||
| + | To clarify, do you mean CONFIG_INTEL_IOMMU and | ||
| + | CONFIG_INTEL_IOMMU_DEFAULT_ON? It would appear the former is generally | ||
| + | configured on the average distribution, but not the latter, requiring an | ||
| + | explicit kernel parameter to be supplied at boot in order to enable it. | ||
| + | |||
| + | > not clear to me that Linux distributions ship with this enabled, | ||
| + | > although that is a concern for ZFSOnLinux and various Linux | ||
| + | > distributions. I will patch Gentoo's genkernel software to add support | ||
| + | > for this functionality by default. | ||
| + | |||
| + | So you are going to enable CONFIG_INTEL_IOMMU_DEFAULT_ON in the default | ||
| + | Gentoo kernel config from now on? There was a mention of a similar feature | ||
| + | in FreeBSD, I'm not sure if it changed since this posting discussing it: | ||
| + | |||
| + | </pre> | ||
| + | *FF and Chrome LTS/Business | ||
Latest revision as of 16:37, 12 November 2013
- IOMMU to prevent DMA ghosting
To clarify, do you mean CONFIG_INTEL_IOMMU and CONFIG_INTEL_IOMMU_DEFAULT_ON? It would appear the former is generally configured on the average distribution, but not the latter, requiring an explicit kernel parameter to be supplied at boot in order to enable it. > not clear to me that Linux distributions ship with this enabled, > although that is a concern for ZFSOnLinux and various Linux > distributions. I will patch Gentoo's genkernel software to add support > for this functionality by default. So you are going to enable CONFIG_INTEL_IOMMU_DEFAULT_ON in the default Gentoo kernel config from now on? There was a mention of a similar feature in FreeBSD, I'm not sure if it changed since this posting discussing it:
- FF and Chrome LTS/Business
