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(parent: 3f2c6d0) | patch
i386: Make CMPXCHG64 only dependent on PAE
authorAndi Kleen <ak@suse.de>
Sat, 23 Jun 2007 00:29:23 +0000 (02:29 +0200)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Sat, 23 Jun 2007 01:41:18 +0000 (18:41 -0700)
commit9d9bbd4d247a674deb43565582151acdc22e90d1
tree1bab60b6457812b10dd62f8bbddb7985b53d5495tree
parent3f2c6d0f4f0dafdc99af0df71edba57e7815cb13commit | diff
i386: Make CMPXCHG64 only dependent on PAE

It is only used for PAE kernels in set_64bit.

The problem is that due to a old Windows bug many CPUs need magic MSRs
to enable CMPXCHG64, and we can't do that nicely early enough before
it is potentially used.

But since we only need it in PAE kernels so only force the checking
for CMPXCHG65 with PAE.

This fixes a boot failure on Transmeta Crusoe

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/i386/Kconfig diff | blob | history
arch/i386/Kconfig.cpu diff | blob | history
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