711900 – sys-kernel/mips-sources - improve fbdev impact on IP28 (PATCH)

Bug 711900 - sys-kernel/mips-sources - improve fbdev impact on IP28 (PATCH)

Summary: sys-kernel/mips-sources - improve fbdev impact on IP28 (PATCH)

Status:	UNCONFIRMED

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	Current packages (show other bugs)
Hardware:	MIPS Linux

Importance:	Normal normal (vote)
Assignee:	MIPS Porters

URL:
Whiteboard:
Keywords:	PATCH

Depends on:	710678
Blocks:
	Show dependency tree

Reported:	2020-03-08 20:57 UTC by Barnabás Virágh
Modified:	2022-10-07 17:45 UTC (History)
CC List:	2 users (show)

See Also:
Package list:
Runtime testing required:	---

Attachments
The patch (mips_ip28_impact_fbdev_improvements.patch,3.68 KB, patch) 2020-03-08 20:59 UTC, Barnabás Virágh	Details \| Diff
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Description Barnabás Virágh 2020-03-08 20:57:22 UTC

=sys-kernel/mips-sources-4.19.79.ip28

For the upcoming xf86-video-impact driver, a new sysctl function is needed in the impact fbdev in the kernel, to efficiently handle multi area DMA flushes on the non-cache-coherent architecture of IP28 (SGI Indigo2 Impact 10000).
https://gitlab.freedesktop.org/xorg/driver/xf86-video-impact/-/merge_requests/1

Without this patch, the xf86-video-impact driver falls back to PIO mode, which is slow.

For the patch to work, bug 710678 filed patch as a prerequisite is assumed.

Reproducible: Always

Comment 1 Barnabás Virágh 2020-03-08 20:59:18 UTC

Created attachment 617538 [details, diff]
The patch