]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
Revert "[PATCH] x86-64: Try multiple timer variants in check_timer"
authorLinus Torvalds <torvalds@woody.osdl.org>
Mon, 8 Jan 2007 23:04:46 +0000 (15:04 -0800)
committerLinus Torvalds <torvalds@woody.osdl.org>
Mon, 8 Jan 2007 23:04:46 +0000 (15:04 -0800)
commitfea5f1e19611d94fbf3905875a427c4cb959cd06
tree5a4c0584eea3ba74745e836e370fa1bbd0dacb02
parentbf81b46482c0fa8ea638e409d39768ea92a6b0f0
Revert "[PATCH] x86-64: Try multiple timer variants in check_timer"

This reverts commit b026872601976f666bae77b609dc490d1834bf77, which has
been linked to several problem reports with IO-APIC and the timer.
Machines either don't boot because the timer doesn't happen, or we get
double timer interrupts because we end up double-routing the timer irq
through multiple interfaces.

See for example

http://lkml.org/lkml/2006/12/16/101
http://lkml.org/lkml/2007/1/3/9
http://bugzilla.kernel.org/show_bug.cgi?id=7789

about some of the discussion.

Patches to fix this cleanup exist (and have been confirmed to work fine
at least for some of the affected cases) and we'll revisit it for
2.6.21, but this late in the -rc series we're better off just reverting
the incomplete commit that caused the problems.

Suggested-by: Adrian Bunk <bunk@stusta.de>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Yinghai Lu <yinghai.lu@amd.com>
Cc: Andrew Morton <akpm@osdl.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Documentation/x86_64/boot-options.txt
arch/x86_64/kernel/early-quirks.c
arch/x86_64/kernel/io_apic.c