Unfortunately, the G200 ioburst workaround doesn't work on some servers like Dell poweredge XR11, XR5610, or HPE XL260 In this case completely disabling WC is the only option to achieve low-latency. It's probably useless to maintain two workarounds for this, so I reverted commit bfa4437fd3938 drm/mgag200: Add a workaround for low-latency and added a new and simpler option, to just disable Write-Combine.
Jocelyn Falempe (2): Revert "drm/mgag200: Add a workaround for low-latency" drm/mgag200: Add an option to disable Write-Combine drivers/gpu/drm/mgag200/Kconfig | 18 ++++++++---------- drivers/gpu/drm/mgag200/mgag200_drv.c | 24 +++++++----------------- drivers/gpu/drm/mgag200/mgag200_mode.c | 8 -------- 3 files changed, 15 insertions(+), 35 deletions(-) base-commit: 2c3d1bd284c5141a85188f48e7f42112e81ffcd8 -- 2.45.0
