Chris Wilson d1dff15c80 drm/i915: Force VT'd workarounds when running as a guest OS ...

commit 8195400f7e upstream.

If i915.ko is being used as a passthrough device, it does not know if
the host is using intel_iommu. Mixing the iommu and gfx causes a few
issues (such as scanout overfetch) which we need to workaround inside
the driver, so if we detect we are running under a hypervisor, also
assume the device access is being virtualised.

Reported-by: Stefan Fritsch <sf@sfritsch.de>
Suggested-by: Stefan Fritsch <sf@sfritsch.de>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Stefan Fritsch <sf@sfritsch.de>
Cc: stable@vger.kernel.org
Tested-by: Stefan Fritsch <sf@sfritsch.de>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201019101523.4145-1-chris@chris-wilson.co.uk
(cherry picked from commit f566fdcd6c)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-11-05 11:08:49 +01:00

..

drm

drm/i915: Force VT'd workarounds when running as a guest OS

2020-11-05 11:08:49 +01:00

host1x

gpu: host1x: debug: Fix multiple channels emitting messages simultaneously

2020-08-19 08:14:52 +02:00

ipu-v3

gpu: ipu-v3: image-convert: Combine rotate/no-rotate irq handlers

2020-08-21 11:05:35 +02:00

vga

vga_switcheroo: Fix missing gpu_bound call at audio client registration

2018-11-13 11:09:00 -08:00

Makefile

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