Bug 109161

Summary:	TSC fix for media-video/SDLcam on Pentium M CPUs
Product:	Gentoo Linux	Reporter:	Tobias Klausmann (RETIRED) <klausman>
Component:	New packages	Assignee:	SpanKY <vapier>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	TSC assembly fix for SDLcam 0.7.3

Description Tobias Klausmann (RETIRED) gentoo-dev

2005-10-13 09:17:31 UTC

Due to the way Pentium Ms handle TSC and the related assembly, SDLcam in its
current state (v0.7.3 plus the Gentoo patches) does not work on those CPUs
(usually, it fails on startup).

I've created a patch that adresses this issue (TSC timing) so that it works on
Pentium Ms. I've submitted it to the maintainer and he will release a new
version. But according to him this will take some time, so I'm submitting it
here, too. I've tested the resulting binaries on all x86 hardware I have (PIII,
PIV, PM, AthXP) and found no problems. As the original assembly code didn't work
elsewhere (SDLcam has an alternative codepath without assembly), I've not
bothered testing it anywhere else.

Comment 1 Tobias Klausmann (RETIRED) gentoo-dev

2005-10-13 09:19:46 UTC

Created attachment 70575 [details, diff]
TSC assembly fix for SDLcam 0.7.3

Comment 2 SpanKY gentoo-dev

2005-10-13 17:36:06 UTC

thanks, now in portage