Sam Bobroff 6fab6dbff4 drm/radeon: fix bad DMA from INTERRUPT_CNTL2 ...

[ Upstream commit 62d91dd2851e8ae2ca552f1b090a3575a4edf759 ]

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>

2020-01-27 14:51:22 +01:00

..

drm

drm/radeon: fix bad DMA from INTERRUPT_CNTL2

2020-01-27 14:51:22 +01:00

host1x

gpu: host1x: Allocate gather copy for host1x

2019-12-31 16:35:29 +01:00

ipu-v3

gpu: ipu-v3: pre: don't trigger update if buffer address doesn't change

2019-12-05 09:21:07 +01:00

vga

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Makefile

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