Sam Bobroff 11753c760b drm/radeon: fix bad DMA from INTERRUPT_CNTL2 ...

[ Upstream commit 62d91dd285 ]

The INTERRUPT_CNTL2 register expects a valid DMA address, but is
currently set with a GPU MC address.  This can cause problems on
systems that detect the resulting DMA read from an invalid address
(found on a Power8 guest).

Instead, use the DMA address of the dummy page because it will always
be safe.

Fixes: d8f60cfc93 ("drm/radeon/kms: Add support for interrupts on r6xx/r7xx chips (v3)")
Fixes: 25a857fbe9 ("drm/radeon/kms: add support for interrupts on SI")
Fixes: a59781bbe5 ("drm/radeon: add support for interrupts on CIK (v5)")
Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-05-15 16:47:18 +09:00

..

drm

drm/radeon: fix bad DMA from INTERRUPT_CNTL2

2023-05-15 16:47:18 +09:00

host1x

drm/tegra: dsi: Enhance runtime power management

2016-08-24 15:58:57 +02:00

ipu-v3

gpu: ipu-v3: ipu-ic: Fix saturation bit offset in TPMEM

2023-05-15 14:02:39 +09:00

vga

vgaarbiter: rst-ifiy and polish kerneldoc

2016-08-16 18:49:56 +02:00

Makefile

gpu: host1x: Provide a proper struct bus_type

2015-01-27 10:09:14 +01:00