Marc Gauthier 84ed30538b xtensa: copy_thread with CLONE_VM must not copy live parent AR windows ... When doing a fork (new VM), the new task has a mirror image of the parent's stack, so keeps the same live register windows etc. However when doing a clone with CLONE_VM, keeping the same VM (eg. when creating a new thread), the child starts afresh on a new stack -- it cannot share any part of the parent stack. It especially cannot have the same live AR windows as the parent, otherwise it will overwrite the parent stack on overflow, likely causing corruption. (and so it did...) Effectively, the register windows need to be spilled. Turns out it's much easier to simply not copy parent register windows when CLONE_VM is set. Signed-off-by: Marc Gauthier <marc@tensilica.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>		2012-10-15 21:42:27 -07:00
..
alpha	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
arm	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
arm64	UAPI headers for arm64 together with some clean-up to make it possible:	2012-10-13 11:20:04 +09:00
avr32	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
blackfin	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
c6x	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
cris	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
frv	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
h8300	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
hexagon	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
ia64	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
m32r	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
m68k	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
microblaze	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
mips	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2012-10-14 14:39:05 -07:00
mn10300	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
openrisc	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
parisc	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
powerpc	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
s390	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
score	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
sh	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
sparc	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
tile	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
um	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2012-10-13 10:05:52 +09:00
unicore32	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
x86	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
xtensa	xtensa: copy_thread with CLONE_VM must not copy live parent AR windows	2012-10-15 21:42:27 -07:00
.gitignore
Kconfig	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00