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On Wednesday, August 24, 2011 01:10:14 PM Mark Knecht wrote: |
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> On Wed, Aug 24, 2011 at 12:55 PM, Paul Hartman |
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> |
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> <paul.hartman+gentoo@×××××.com> wrote: |
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> > On Wed, Aug 24, 2011 at 2:13 PM, Mark Knecht <markknecht@×××××.com> wrote: |
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> >> http://cateee.net/lkddb/web-lkddb/IOMMU_SUPPORT.html |
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> >> |
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> >> which seem to indicate that I should see an IOMMU option somewhere in |
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> >> the drivers section of the kernel config. I do not, however, find that |
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> >> right now which is why I came here to ask. |
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> > |
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> > It looks to me like the specific option CONFIG_IOMMU_SUPPORT was just |
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> > added for kernel 3.1, so you won't see it until then. It even mentions |
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> > it on the page you linked to:: "found in Linux kernels: 3.1-rc+HEAD" |
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> > |
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> > It appears virtualbox-modules 4.1.0 doesn't check this. Maybe 4.1.2 is |
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> > developed against the 3.1 kernel... Maybe you should switch to the |
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> > latest git kernel, if you dare, or maybe you could mask the vbox |
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> > modules 4.1.2 and use 4.1.0 instead? I'm not a virtualbox user so I |
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> > have no idea if that's a reasonable suggestion or not, but I'm just |
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> > throwing it out there. :) |
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> |
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> Thanks for the insights Paul. I'll roll back to a slightly earlier |
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> version of Virtualbox which will likely solve the problem. |
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> |
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> Cheers, |
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> Mark |
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I just checked on my system and with Virtualbox 4.0.4, it works. (ok, it's |
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older :) |
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|
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# " zcat /proc/config.gz | grep IOMMU " gives: |
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** |
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# CONFIG_CALGARY_IOMMU is not set |
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# CONFIG_AMD_IOMMU is not set |
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CONFIG_IOMMU_HELPER=y |
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# CONFIG_IOMMU_API is not set |
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# CONFIG_IOMMU_STRESS is not set |
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** kernel = gentoo-sources-2.6.34-r6 |
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I can succesfully run 64 and 32bit clients on this machine. CPU is Intel Xeon |
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On my other machine (with Virtualbox 4.0.12 and AMD Phenom CPU I get the |
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following for the same command: |
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** |
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CONFIG_GART_IOMMU=y |
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CONFIG_CALGARY_IOMMU=y |
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CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT=y |
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CONFIG_AMD_IOMMU=y |
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CONFIG_AMD_IOMMU_STATS=y |
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CONFIG_IOMMU_HELPER=y |
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CONFIG_IOMMU_API=y |
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# CONFIG_IOMMU_DEBUG is not set |
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# CONFIG_IOMMU_STRESS is not set |
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** kernel = gentoo-sources-2.6.36-r5 |
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I should probably disable some stuff, but not sure why the CALGARY got enabled |
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by default. |
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I haven't gotten round to testing 4.1.2 yet. |
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|
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-- |
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Joost |
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