mgag200 disable write combine on rt (!4353) · Merge requests · Red Hat / centos-stream / src / kernel / centos-stream-9

Jocelyn Falempe requested to merge kdj0c/centos-stream-9:rhel-28760 into main May 28, 2024

JIRA: https://issues.redhat.com/browse/RHEL-28760

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. Replacing DRM_MGAG200_IOBURT_WORKAROUND with DRM_MGAG200_DISABLE_WRITECOMBINE
These options are only available if PREEMPT_RT is set, so this change only affect the rt-kernel

Signed-off-by: Jocelyn Falempe jfalempe@redhat.com

Edited May 28, 2024 by Jocelyn Falempe

mgag200 disable write combine on rt

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