On Wed, Jan 23, 2019 at 05:02:38PM +0200, Joonas Lahtinen wrote:
> We have many reports where just having intel_iommu=on (and using the
> system normally, without any virtualization stuff going on) will cause
> unexplained GPU hangs. For those users, simply switching to
> intel_iommu=igfx_off solve
Quoting Joerg Roedel (2019-01-22 18:51:35)
> On Tue, Jan 22, 2019 at 04:48:26PM +0200, Joonas Lahtinen wrote:
> > According to our IOMMU folks there exists some desire to be able to assign
> > the iGFX device aka have intel_iommu=on instead of intel_iommu=igfx_off
> > due to how the devices might b
On Tue, Jan 22, 2019 at 04:48:26PM +0200, Joonas Lahtinen wrote:
> According to our IOMMU folks there exists some desire to be able to assign
> the iGFX device aka have intel_iommu=on instead of intel_iommu=igfx_off
> due to how the devices might be grouped in IOMMU groups. Even when you
> would no
Quoting Joerg Roedel (2019-01-22 13:01:09)
> Hi Daniel,
>
> On Tue, Jan 22, 2019 at 11:46:39AM +0100, Daniel Vetter wrote:
> > Note that the string of platforms which have various issues with iommu
> > and igfx is very long, thus far we only disabled it where there's no
> > workaround to stop it f
Hi Daniel,
On Tue, Jan 22, 2019 at 11:46:39AM +0100, Daniel Vetter wrote:
> Note that the string of platforms which have various issues with iommu
> and igfx is very long, thus far we only disabled it where there's no
> workaround to stop it from hanging the box, but otherwise left it
> enabled. S
On Tue, Jan 22, 2019 at 11:39 AM Joerg Roedel wrote:
>
> On Fri, Jan 18, 2019 at 12:17:05PM +, Eric Wong wrote:
> > @@ -5411,6 +5411,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e20,
> > quirk_iommu_g4x_gfx);
> > DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e30, quirk_iommu_g4x_
On Fri, Jan 18, 2019 at 12:17:05PM +, Eric Wong wrote:
> @@ -5411,6 +5411,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e20,
> quirk_iommu_g4x_gfx);
> DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e30, quirk_iommu_g4x_gfx);
> DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e40, q
How about we use a quirk in case distros make IOMMU the default
one day?
----8<--------
Subject: [PATCH] iommu/intel: quirk to disable DMAR for QM57 igfx
Like the GM45, it seems the integrated graphics on QM57 seems
broken and hanging graphics with "intel_iommu=on". So allow
future u
