[PATCH] x86-64: Fix bad assumption that dualcore cpus have synced TSCs
authorjohn stultz <johnstul@us.ibm.com>
Wed, 28 Sep 2005 04:45:36 +0000 (21:45 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Wed, 28 Sep 2005 14:46:41 +0000 (07:46 -0700)
commit6c132b5fe6579ed4b4892c02fe6c05f7e3afc579
tree4dd6236d24fdd9aec545b8feb51516bbf052c12e
parenta9d014afc3609e3094fd06176380ed057edd4a1b
[PATCH] x86-64: Fix bad assumption that dualcore cpus have synced TSCs

This should resolve the issue seen in bugme bug #5105, where it is assumed
that dualcore x86_64 systems have synced TSCs.  This is not the case, and
alternate timesources should be used instead.

For more details, see:
http://bugzilla.kernel.org/show_bug.cgi?id=5105

Andi's earlier concerns that the TSCs should be synced on dualcore systems
have been resolved by confirmation from AMD folks that they can be
unsynced.

Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
arch/x86_64/kernel/time.c