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On Tue, Aug 23, 2011 at 9:18 PM, Hilco Wijbenga |
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<hilco.wijbenga@×××××.com> wrote: |
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> On 23 August 2011 20:38, Mark Knecht <markknecht@×××××.com> wrote: |
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>> Hi all, |
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>> Can someone point me toward somehow enabling CONFIG_IOMMU_SUPPORT? |
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>> It is apparently a kernel config option no required by |
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>> virtualbox-drivers but I'm not finding it in the 3.0.3 kernel. I |
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>> suspect there's something else I need to enable before this option |
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>> becomes available? Unfortunately I haven't been able to Google what I |
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>> need to do to find it. |
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>> |
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>> Thanks, |
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>> Mark |
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>> |
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>> * Messages for package app-emulation/virtualbox-modules-4.1.2: |
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>> |
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>> * CONFIG_IOMMU_SUPPORT: is not set when it should be. |
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>> * Please check to make sure these options are set correctly. |
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>> * Failure to do so may cause unexpected problems. |
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>> <SNIP> |
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>> |
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>> k2 linux # cat .config | grep IOMMU |
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>> CONFIG_GART_IOMMU=y |
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>> # CONFIG_CALGARY_IOMMU is not set |
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>> CONFIG_AMD_IOMMU=y |
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>> # CONFIG_AMD_IOMMU_STATS is not set |
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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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>> k2 linux # |
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> |
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> I noticed the same. There does not appear to be any such option but |
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> luckily its absence does not appear to affect running VB at all. |
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> |
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|
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At the time of writing this I haven't tried Gregory's item about the |
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CONFIG_CALGARY_IOMMU option. I'll try that later when I get to the |
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machine but the reading I did on the web sounded like that was for IBM |
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specific hardware. |
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|
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Here it seems that on the machine I was working - Intel based, i920 - |
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VB won't install Win 7 64-bit without it. I get a bunch of messages |
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that it will install but many cause problems. Are you running any |
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64-bit VMs? |
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|
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However I've got another Intel machine where I can install Win 7 |
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64-bit in VB just fine with no complaints at all. Here's the IOMMU |
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stuff from that box: |
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|
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mark@c2stable ~ $ uname -a |
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Linux c2stable 3.0.1-gentoo #1 SMP PREEMPT Mon Aug 8 13:05:19 PDT 2011 |
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x86_64 Intel(R) Core(TM) i7 CPU X 980 @ 3.33GHz GenuineIntel GNU/Linux |
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mark@c2stable ~ $ zcat /proc/config.gz | grep IOMMU |
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CONFIG_GART_IOMMU=y |
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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=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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mark@c2stable ~ $ |
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Except for the AMD option they seem identical unless I'm misreading something. |
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I'm now wondering if there is both a BIOS and chipset component to |
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making this work? I'm pretty sure I've got all the Vt-d stuff enabled |
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but I'll have to wait to go into BIOS on both of them to compare. |
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I'll try to do a diff later today between both machine's .config files |
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to look for differences. |
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|
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Cheers, |
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Mark |
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