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* pre Sandy bridge IOMMU support (gm45)
@ 2016-01-23  7:38 Thierry Laurion
  2016-01-24 18:21 ` Thierry Laurion
  2016-01-25 14:30 ` Jan Beulich
  0 siblings, 2 replies; 23+ messages in thread
From: Thierry Laurion @ 2016-01-23  7:38 UTC (permalink / raw)
  To: xen-devel


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Hey devs,

Thinkpad x200 p8600 laptops have vt-d, vt-x and tpm. They also have intel
integrated graphics 4 Series (gm45 chipset), supported through i915 driver.

In December, a fix got introduced to Xen 4.6 through iommu=no-igfx switch.
Before that fix, it was impossible to boot xen without passing iommu=0.

With iommu=no-igfx passed on, Qubes boots xen, kernel, dom0 and domu until
some graphic rendering is done from a domu to dom0 xserver.

I'm trying to push forward IOMMU support of gm45 chipset here. The problem
is between i915 and xen iommu support for sure, but there is no crash or
interesting debugging information given on a serial console.

Any dev help is welcome since that beast and t400 would be excellent Qubes
candidates once that problem is fixed. I posted in December on the list
just before Christmas but I guess the timing wasn't right;)

Thanks for your help.
Thierry

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^ permalink raw reply	[flat|nested] 23+ messages in thread

end of thread, other threads:[~2016-06-26 23:47 UTC | newest]

Thread overview: 23+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-01-23  7:38 pre Sandy bridge IOMMU support (gm45) Thierry Laurion
2016-01-24 18:21 ` Thierry Laurion
2016-01-24 23:45   ` [qubes-devel] " Marek Marczykowski-Górecki
2016-01-26 21:10     ` Thierry Laurion
2016-01-27  5:08       ` Thierry Laurion
2016-01-29 17:52         ` Thierry Laurion
2016-01-25 10:01   ` Andrew Cooper
2016-01-25 14:30 ` Jan Beulich
2016-01-25 21:49   ` Thierry Laurion
2016-01-26 10:52     ` Jan Beulich
     [not found]       ` <CAAzJznxr4CT8J0fnx1kkWfQ+56J0PH+QBjgjH=6phtzbDd4dyw@mail.gmail.com>
2016-01-26 11:37         ` Jan Beulich
2016-01-26 11:57           ` Thierry Laurion
2016-01-26 12:27             ` Jan Beulich
2016-01-26 22:21               ` Tian, Kevin
2016-01-26 23:39                 ` Thierry Laurion
2016-01-30  1:47           ` Marek Marczykowski-Górecki
2016-02-01  7:59             ` Jan Beulich
2016-02-01 12:28               ` Marek Marczykowski-Górecki
2016-02-01 12:35                 ` Jan Beulich
2016-02-20 18:20                   ` Thierry Laurion
2016-02-21  3:45       ` Thierry Laurion
2016-02-28 19:08         ` Thierry Laurion
2016-06-26 23:47           ` Thierry Laurion

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