what does rdmsr 0 0x3a show you? ron
On Fri, Jul 24, 2015 at 10:06 PM Noah Vesely <[email protected]> wrote: > I've been trying to get VT-d working on John Lewis's build for the 2015 > Pixel (samus). You can see our conversation at > https://plus.google.com/116173342884039282107/posts/TGA4EXYQMfq and I > have also pasted it below. So far, I haven't got anywhere, so I thought > I would try asking you all as well. > > Thanks, > Noah > > &%$#&%$#&%$#&%$#&%$#&%$#&%$#&%$#&%$# > > Noah Vesely > - Jul 16, 2015 > > Is it possible to get Intel VT-d working on the Chromebook Pixel 2/ > Samus? The i7-5600U processor does support it. > ARK | Intel® Core™ i7-5600U Processor (4M Cache, up to 3.20 GHz) > ark.intel.com > ARK | Intel® Core™ i7-5600U Processor (4M Cache, up to 3.20 GHz) quick > reference guide including specifications, features, pricing, > compatibility, design documentation, ordering codes, spec codes and more. > John Lewis's profile photoNoah Vesely's profile photo > 10 comments > John Lewis > Jul 18, 2015 > > > > > AFAIK, none of the hardware VT extensions are disabled in the firmware > on Samus. Have you tried it? > Noah Vesely > Jul 18, 2015 > > > > > Yes. VT-x was enable while VT-d was not. > John Lewis > Jul 18, 2015 > > > > > Clone > > https://chromium.googlesource.com/chromiumos/third_party/coreboot/+/firmware-samus-6300.B > and run menuconfig to see if there's an option for VT-d. > Noah Vesely > Jul 19, 2015 > > > > > I can't figure out how to checkout this repository. I cloned the main > third_part/coreboot repo then checked out the broadwell branch, but > could not find the same directory you linked. Maybe my git fu could use > some work. > John Lewis > Jul 20, 2015 > > > > > Use the last chunk of the URL as the branch argument i.e. "-b > firmware-samus-6300.B". > Noah Vesely > Jul 20, 2015 > > > > > Nothing in menuconfig, however, I found the line `#define CONFIG_IOMMU > 0` in ./build/config.h. I also found `#define CONFIG_ENABLE_VMX 0`. > John Lewis > Jul 21, 2015 > > > > > VMX is already enabled in the firmware. IOMMU is unrelated. I would have > to conclude that VT'd is either not supported by that CPU or something > more needs to be done in coreboot to get it to work. > Noah Vesely > Jul 21, 2015 > > > > > VT-d is supported by this CPU. See original link to Intel Ark. > > VT-d is Intel's specification for their IOMMU technology, so I don't see > how it's unrelated. > John Lewis > Jul 21, 2015 > > > > > Take a look at the .config from a shellball ROM (you can extract it > using cbfstool). > > https://johnlewis.ie/extracting-the-shell-ball-rom-using-a-chromeos-image/ > > Noah Vesely > 9:15 PM > > > > > I don't see anything relevant to VT-d; no VT-d keywords (e.g., iommu, > vt, vmx, hvm, and directio). > > http://paste.debian.net/hidden/08ac8494/ > > -- > coreboot mailing list: [email protected] > http://www.coreboot.org/mailman/listinfo/coreboot
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