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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Graphics problems with intel_iommu=on on Linux >= 3.7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91127#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Graphics problems with intel_iommu=on on Linux >= 3.7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91127">bug 91127</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>(In reply to Ting-Wei Lan from <a href="show_bug.cgi?id=91127#c5">comment #5</a>)
<span class="quote">> My gpu_devid is 0x0042, but
> PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB is 0x0044 and
> PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG is 0x0046.</span >
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 3bb678e..7c68576 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -581,7 +581,7 @@ static inline int needs_ilk_vtd_wa(void)
/* Query intel_iommu to see if we need the workaround. Presumably that
* was loaded first.
*/
- if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB ||
+ if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG ||
gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG) &&
intel_iommu_gfx_mapped)
return 1;</pre>
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