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| author | Jakub Kicinski <kuba@kernel.org> | 2024-03-22 02:14:13 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-03-22 02:15:08 +0300 |
| commit | 537c2e91d3549e5d6020bb0576cf9b54a845255f (patch) | |
| tree | c09e8a1b7d733cde19b0c72678c28fb2bc97ff6b /drivers/gpu/drm/mgag200/Kconfig | |
| parent | 237bb5f7f7f55ec5f773469a974c61a49c298625 (diff) | |
| parent | cba9ffdb9913dfe6be29f049ce920ce451ce7cc4 (diff) | |
| download | linux-537c2e91d3549e5d6020bb0576cf9b54a845255f.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/mgag200/Kconfig')
| -rw-r--r-- | drivers/gpu/drm/mgag200/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mgag200/Kconfig b/drivers/gpu/drm/mgag200/Kconfig index b28c5e4828f4..5e4d48df4854 100644 --- a/drivers/gpu/drm/mgag200/Kconfig +++ b/drivers/gpu/drm/mgag200/Kconfig @@ -11,3 +11,15 @@ config DRM_MGAG200 MGA G200 desktop chips and the server variants. It requires 0.3.0 of the modesetting userspace driver, and a version of mga driver that will fail on KMS enabled devices. + +config DRM_MGAG200_IOBURST_WORKAROUND + bool "Disable buffer caching" + depends on DRM_MGAG200 && PREEMPT_RT && X86 + help + Enable a workaround to avoid I/O bursts within the mgag200 driver at + the expense of overall display performance. + It restores the <v5.10 behavior, by mapping the framebuffer in system + RAM as Write-Combining, and flushing the cache after each write. + This is only useful on x86_64 if you want to run processes with + deterministic latency. + If unsure, say N. |