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authorRoland McGrath <roland@redhat.com>2005-05-26 15:21:13 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-26 16:16:16 -0700
commitd68b8622ccbee8a18e495ad1650c3306f2eeb0d6 (patch)
tree7ec334394d78055de4d085c354c2931390c229f0 /Documentation/video4linux
parent4ec5240ec367a592834385893200dd4fb369354c (diff)
downloadlinux-d68b8622ccbee8a18e495ad1650c3306f2eeb0d6.tar.gz
[PATCH] i386: fix prevent_tail_call
We fixed this bug before, but it didn't take.  It may have been the case
that the problem was first noticed to occur in a CONFIG_REGPARM compile.
But it's not regparm functions that need not to make tail calls, it's
asmlinkage functions called with a user pt_regs frame on the stack
supplying their arguments.  prevent_tail_call probably doesn't do anything
at all in regparm functions (your argument registers are going to be
clobbered, period).  It was a braino to conditionalize that definition in
the first place.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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