From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 14 Dec 2012 18:49:35 +0000 (-0500)
Subject: new helper: compat_user_stack_pointer()
X-Git-Tag: v3.8-rc1~14^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9b064fc3f95a8e44e929fdf4d6037334ea03d15b;p=pandora-kernel.git

new helper: compat_user_stack_pointer()

Compat counterpart of current_user_stack_pointer(); for most of the biarch
architectures those two are identical, but e.g. arm64 and arm use different
registers for stack pointer...

Note that amd64 variants of current_user_stack_pointer/compat_user_stack_pointer
do *not* rely on pt_regs having been through FIXUP_TOP_OF_STACK.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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